US20060146877A1 - Multipool using automatically maintained active connection pool list - Google Patents
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- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/1001—Protocols in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers
- H04L67/1004—Server selection for load balancing
- H04L67/1008—Server selection for load balancing based on parameters of servers, e.g. available memory or workload
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/46—Multiprogramming arrangements
- G06F9/50—Allocation of resources, e.g. of the central processing unit [CPU]
- G06F9/5005—Allocation of resources, e.g. of the central processing unit [CPU] to service a request
- G06F9/5027—Allocation of resources, e.g. of the central processing unit [CPU] to service a request the resource being a machine, e.g. CPUs, Servers, Terminals
- G06F9/5055—Allocation of resources, e.g. of the central processing unit [CPU] to service a request the resource being a machine, e.g. CPUs, Servers, Terminals considering software capabilities, i.e. software resources associated or available to the machine
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/1001—Protocols in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/1001—Protocols in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers
- H04L67/1029—Protocols in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers using data related to the state of servers by a load balancer
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- H—ELECTRICITY
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- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/1001—Protocols in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers
- H04L67/1031—Controlling of the operation of servers by a load balancer, e.g. adding or removing servers that serve requests
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/1001—Protocols in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers
- H04L67/1038—Load balancing arrangements to avoid a single path through a load balancer
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- H—ELECTRICITY
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- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/40—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass for recovering from a failure of a protocol instance or entity, e.g. service redundancy protocols, protocol state redundancy or protocol service redirection
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Abstract
Multipools can keep track of dead connection pools and can avoid selection of the dead connection pools. The multipool can check whether a connection pool has revived in the background.
Description
- This application claims priority to U.S. Provisional Application No. 60/640,449 entitled “Multipool Improvements” by Rahul Srivastava, filed Dec. 31, 2004 [Attorney Docket No. BEAS-01789US0].
- Application servers, such as the WebLogic™ Server available from BEA Systems of San Jose, Calif., allow users to do a number of functions. One of the functions typically supported by application servers is to provide access to a database. In one embodiment, a connection pool such as a Java Database Connectivity (JDBC) connection pool is provided by the application server. The connection pool provides a number of already set up connections with a database. These connections are provided to applications of the application server as needed. Such connection pools allow for a relatively large number of applications in the application server to access a database while reducing the database connection time for the application.
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FIG. 1 is a diagram illustrating the use of a multipool with a multipool manager of one embodiment. -
FIGS. 2A-2B are diagrams illustrating the use of a multipool manager having an active connection pool list. -
FIGS. 3A-3B are flowcharts that illustrate the use of an active connection pool list of one embodiment. -
FIG. 4 is a diagram illustrating the operation of a multipool manager of one embodiment of the present invention. -
FIGS. 5A-5B are diagrams that illustrate the use of callbacks with a multipool manager of embodiments of the present invention. -
FIG. 6 is a flowchart illustrating the use of callbacks with a multipool manager of one embodiment of the present invention. -
FIG. 1 is a diagram that illustrates the operation of amultipool manager 102. In some systems, it is desired to have multiple database instances, such asdatabase instances database instances connection pool 108 andconnection pool 110. Rather than dedicating each application, such asapplications multipool manager 102 can determine which connection pool to use to obtain a connection for an application into the database system. - Diffferent methods for selecting a connection pool are possible. One selection method has a primary connection pool and a backup connection pool. The connections are first attempted at a primary connection pool and then upon failure event, the connections are then sent through a backup connection pool. Another method is a load balancing method where the connections are distributed between multiple connection pools to balance the load at the different connection pools. A round-robin method is an example of a load balancing method.
- One embodiment of the present invention comprises a multipool system to connect to database instances comprising
multiple connection pools connection pools database instances multipool manager 210 is adapted to select and set up connections to a database instance through a connection pool. Themultipool manager 210 is adapted to keep track of dead connection pools between requests for conections. - The
multipool manager 210 can select a connection pool in a manner that avoids any dead connection pools. For the example ofFIG. 2A , the multipool manager can avoid selecting connection pool A if it is dead. In one embodiment, a selection of only non-dead connection pools is done as authorized by an application. In one embodiment, the application indicates by a callback or by configuration info whether to switch connection pools. - The
multipool manager 210 can be adapted to maintain alist 212 of active connection pools and to use thelist 212 to determine what connection pool to connect through. The term “list” is not meant to imply any specific data structure. The active connection pools on the list can include those connection pools that are not those connection pools determined by the multipool manager to be dead. - Dead connection pools can be tested in the background to see whether they should be returned to the active connection pool list. The list of active connection pools can be a subset of a candidate list provided by an application. Alternatively, separate candidate lists and active lists can be maintained, and the multipool manager can select a connection pool that is on both lists. The
multipool manager 210 can store an indication for each connection pool associated with the candidate list indicating whether the connnection pool is active or dead. - In example of
FIG. 2A , the connection pool A is dead, thus not on the activeconnection pool list 212. An application, such as anapplication 220, can request a connection into one of thedatabase instances multipool manager 210. InFIG. 2A , themultipool manager 210 selects a connection through the connection pool B. - The
multipool manager 210 can test whether a connection pool has been revived in the background asynchronously. In one embodiment, an asychronousbackground test module 214 can be used. -
FIG. 2B illustrates an example of this background testing. In this example, a SQL test query is sent to the dead connection pool A. If the correct answer is obtained from thedatabase instance 206, themultipool manager 210 can update the activeconnection pool list 212 with an indication of the connection pool A. In this way, the next time an application requests a connection to a database, a connection through the connection pool A is possible. -
FIG. 3B illustrates a flowchart illustrating the asynchronous testing of a dead connection pools. In one embodiment, preset wait time passes instep 300. The wait time can be set by an application and stored with the configureation information for the multipool manager or a default value can be used Instep 302, the dead connection pool is tested. If the dead connection pool has revived as indicated by the test, the activeconnection pool list 306 is updated, otherwise, the cycle repeats waiting the preset time instep 300. -
FIG. 3A illustrates the operation of the request for a connection to a database in one embodiment. Instep 308, a request for connection to the database is received at a multipool manager. Instep 310, the multipool manager can select a connection pool. In one embodiment, themultipool manager 210 selects a connection pool on an active connection pool list. The connection can then be attemped. Instep 312, it is checked whether the connection pool is dead. If the connection pool is dead, instep 314, the active connection pool list is updated and new connection pool is selected from the active pool list. If the connection pool is not dead, instep 315, it is checked to see whether the connection pool is full. If there is no available connections, then the multipool manager can select another connection pool from the active connection pool list, instep 310. If any selected connection pool is not dead or full, then, instep 316, the connection is done through the selected connection pool. -
FIG. 4 is a flowchart illustrating different conditions that can occur in one embodiment of the present invention. Instep 402, a request for a connection to the database is received at a multipool manager. In step 404 a multipool manager selects a connection pool from the active pool list. Its possible, as determined in step 408, that the selected connection pool is a newly revived connection pool. If so, this is called a failback as indicated in step 410. Instep 412, it is checked whether the connection pool is dead. If a connection pool is dead, the active connection pool list is updated instep 414, and instep 416, another connection pool is selected from the active connection pool list, this is called a failover condition. Instep 418, if the connection pool is not dead it is checked to see whether the connection pool is full. If the connection pool is full, instep 420, it is checked to see whether a spillover is allowed. If it is, instep 422 another connection pool is selected from the active connection pool list.Step 424, shows a connection is made. As described below an application may authorize a failback, failover or spillover condition with a callback or with config information. - One embodiment of the present invention is a multipool manager adapted to select and set up connections to a database instance through a connection pool. The multipool manager is adapted to keep track of dead connection pools. The multipool manager implements a selection method in which the multipool manager avoids selecting dead connection pools to provide a connection for an appplication.
- One embodiment of the present invention is a multipool system to connect to database instances comprising multiple connection pools. The connection pools are adapted to provide connections to database instances. A multipool manager is adapted to select and set up connections to a database instance through a connection pool. The multipool manager is adapted to keep track of dead connection pools and to asynchronously test whether a connection pool is revived.
- In some instances it is desirable to check with the application before switching the connection pool. Switching a connection pool can be a complicated process. Sometimes there are preferred database instances and it is not desired that the user switch to another less desirable database instance unless the first database instances are truly unavailable. In one embodiment of the present invention, the multipool manager implements callbacks to an application in order to get authorization from the application for a switch of connection pools.
- In one embodiment of the present invention, a multipool system is used to connect to database instances with multiple connection pools. The connection pools 502 and 504 are adapted to provide connections to
database instances multipool manager 506 is adapted to select and set up connections to a database instance through a connection pool. Themultipool manager 506 is adapted to check with anapplication 512 before switching connection pools. - In the example of
FIG. 5A , a callback is available from themultipool manager 506 to theapplication 512. If the connection pool is to be switched, themultipool manager 506 can do a callback to theapplication 512 to determine whether the application will authorize the switch. In example ofFIG. 5A , the active connection pool list includes connection pool B but not connection pool A. Before switching to connection pool B themultipool pool manager 506 can do a callback to theapplication 512. In one embodiment, in step 1 a request for connection is received by themultipool manager 506. Instep 2, after the multipool manager determines that a connection pool switch may be desirable, a callback is done to theapplication 512. The callback can be, for example, the calling of thecallback method 514 which is part of theapplication 512. Themultipool manager 506 can storeconfiguration information 506 a which may include an indication of what conditions the callback is to be sent and/or an indication of the callback method name, in this case, callback method A. The application code can implement acallback method 514 in any manner. In one embodiment, a callback response is received by the multipool manager instep 3. The callback response can be an indication whichmultipool manager 506 can use to determine how to connect. - In one embodiment, the callback response indications include an “OK” indication. When the “OK” indication is received, the multipool manager switches to the new connection pool. Another callback response indication is a “retry” indication. If a “retry” indication is received, the
multipool manager 506 can attempt to get a connection with the old connection pool. Another possible callback response indication is a “don't reconnect” indication. When a “don't reconnect” indication is received the multipool manager not attempt to make a connection. -
FIG. 5B illustrates a possible reason that a “retry” indication might be provided by the callback method. In one example, it may be desirable to do a certain number of attempts onto a primary database instance before switching over to a secondary database instance.FIG. 5B illustrates an example in which an independent ping is done from theapplication 512 to thedatabase instance 508 as part of the callback method. If the independent ping comes up with an indication that thedatabase instance 508 is still running, the application can send a “retry” indication. If theapplication 512 is sufficiently convinced that the database instance is down, a “OK” callback response can be sent. - Any callback method can be implemented by the
application 512. In one example, the multipool manager has a callback interface that can be implemented by any application code. -
FIG. 6 is a diagram illustrating the operation of callbacks of one embodiment. Instep 602, it is checked if the connection pool is to be switched as determined by the multipool manager. If the connect pool is not to be switched, the connection is done to the connection pool instep 604. If the connection is to be switched, then instep 606, it is checked whether a callback is indicated for the condition. If no callback is indicated, then the connection is done through the new connection pool without a callback. If a callback is indicated, instep 610, a callback is done. If an “OK” indication is received, the connection is done with the new connection pool instep 614. If a retry indication is received, a connection is attempted to be done using the old connection pool, instep 616. Otherwise, if a “don't reconnect” indication is received, no connection through a connection pool is done inStep 618. - In one embodiment, a multipool manager is adapted to select and set up connections to a database instance through a connection pool. The multipool manager is adapted to check with an application before switching connection pools.
- The following description gives one non-limiting implementation of multipool implementation. The discussion below gives one embodiment, but those skilled in the art will understand that other implementations of the above-described concepts can be done. Any potentially limitating language given below is to be interpreted in the context of the specific non-limiting implementation and is not meant to limit the general concepts.
- MultiPools can check with the application before failing over to alternate Pools. This is useful if the configured test for the Pool currently in use encounters a random or transient failure, if the application wants to control when a Database Management System (DBMS) instance that's currently not handling clients is brought back into service or if applications can specified an identity when getting connections from Pools, and connections from a matching pool should be returned. This is useful in cases where the DBMS vendor does not provide native support for setting client identities on anonymous JDBC connections.
- A number of improvements can be implemented for multipools.
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- FAILOVER—Existing MultiPool algorithm “HIGH_AVAILABILITY” will be renamed as “FAILOVER”. It will also optionally provide the ability to route application requests for connections to alternative Pools if the current Pool is busy.
- HEALTH—Existing functionality will be improved to mark dead Pools so that application requests for connections are not routed to these Pools.
- CALLBACK—A callback interface will be provided to applications to control MultiPool decision to failover to alternative Pools when a failed Pool is detected, or to fail back to Pools previously marked dead.
- Applications can configure a FAILOVER algorithm. FAILOVER can have connections sent through a primary connection pool and have these connections routed through a secondary connection pool upon the failure of the primary connection pool. FAILOVER can optionally also be able to route application requests for connections to alternative Pools if the current Pool is busy.
- In one embodiment, applications will also be able to configure the following MultiPool attribute:
/** * If set, application requests for connections will be routed to * alternate pools if current pool is busy. This is only relevant * when running with the HIGH_ALGORITHM algorithm. Default implies * feature is disabled. * * @param newVal The new attribute value * @dynamic * @default false * public boolean isFailoverRequestIfBusy( ); public void setFailoverRequestIfBusy(boolean failoverRequestIfBusy); - Applications can be able to implement and register a callback with the system. This callback can be invoked when the MultiPool detects a dead or busy Pool, giving application the ability to control whether MultiPool fails over to an alternative Pool or not.
- In one embodiment, applications will be able to implement the following interface:
/** * Application can optionally implement this interface if it wants * to control the failover behavior of WebLogic Server MultiPools. * * If application has registered a class with WebLogic Server that * implements this interface, WebLogic Server will invoke this interface's * method “allowPoolFailover( )” and take different actions depending upon * the return code from the method's invokation. * * @see weblogic.management.configuration.JDBCMultiPoolMBean#setConnectionPoolFailoverCallbackHandler */ public interface ConnectionpoolFailoverCallback { // name of this interface static public final String IF_NAME = “weblogic.jdbc.extensions.ConnectionPoolFailoverCallback”; // opcodes for method ′allowPoolFailover( )′ static public final int OPCODE_CURR_POOL_DEAD = 0; static public final int OPCODE_CURR_POOL_BUSY = 1; static public final int OPCODE_REENABLE_CURR_POOL = 2; // return codes for method ′allowPoolFailover( )′ static public final int OK = 0; // application is ok with impending action static public final int RETRY_CURRENT = 1; // retry current pool static public final int DONOT_FAILOVER = 2; // do not failover, WLS will throw weblogic.jdbc.extensions.PoolUnavailableSQLException /* * MultiPool will invoke this method under various failover/failback * conditions. Application should return one of the above-defined codes * from this method, based upon application-specific semantics. * * @param currPool - name of connection pool currently in use. * will NEVER be null * * @param nextPool - name of alternate connection pool. * will be null for opcode ′OPCODE_REENABLE_CURR_POOL′ * * @param opcode - operation being performed * OPCODE_CURR_POOL_DEAD - ′currPool′ is Dead, MultiPool needs to * failover application requests for connections to ′nextPool′. * * Application should return “OK”, “RETRY_CURRENT” or “DONOT_FAILOVER”, * depending on what it wants the MultiPool to do. * * OPCODE_CURR_POOL_BUSY - ′currPool′ is Busy, MultiPool needs to * re-route application requests for connections to ′nextPool′ * * Application should return “OK” if it is ok with this action, * else should return either of the other return codes. * * OPCODE_REENABLE_CURR_POOL - ′currPool′ was previously found * Dead and was consequently disabled. It has now been found healthy, * and MultiPool needs to re-enable it. * * Application should return “OK” if it is ok with this action, * else should return either of the other return codes. * public int allowPoolFailover(String currPool, String nextPool, int opcode); } - Application can register this callback in the attribute “ConnectionPoolFailoverCallbackHandler” of JDBCMultiPoolMBean.
/** * Used to set the absolute name of the application class that implements * the interface weblogic.jdbc.extensions.ConnectionPoolFailoverCallback. * * @see weblogic.jdbc.extensions.ConnectionPoolFailoverCallback * @non-dynamic */ public String getConnectionPoolFailoverCallbackHandler ( ); public void setConnectionPoolFailoverCallbackHandler (String className); - Multipools can be enhanced to internally monitor and track the health of the Pools underneath. If a Pool is determined to be dead, it will be marked so and subsequent application requests for connections will not be routed to that Pool.
- In one embodiment, applications will be able to configure the following JDBCMultiPoolMBean attribute:
/** * Used to configure the frequency at which the MultiPool checks * the health of connection pools that were previously found * dead and were consequently disabled. * * @param newVal The new attribute value * @dynamic * @ default 300*/ void setHealthCheckFrequencySeconds (int newVal); int getHealthCheckFrequencySeconds ( ); - Embodiments may be implemented using a conventional general purpose or a specialized digital computer or microprocessor(s) programmed according to the teachings of the present disclosure, as will be apparent to those skilled in the computer art. Appropriate software coding can readily be prepared by skilled programmers based on the teachings of the present disclosure, as will be apparent to those skilled in the software art. The invention may also be implemented by the preparation of integrated circuits or by interconnecting an appropriate network of conventional component circuits, as will be readily apparent to those skilled in the art.
- One embodiment includes a computer program product which is a storage medium (media) having instructions stored thereon/in which can be used to program a computer to perform any of the features presented herein. The storage medium can include, but is not limited to, any type of disk including floppy disks, optical discs, DVD, CD-ROMs, micro drive, and magneto-optical disks, ROMs, Rams, EPROM's, EPROM's, Drams, Rams, flash memory devices, magnetic or optical cards, Nan systems (including molecular memory ICs), or any type of media or device suitable for storing instructions and/or data.
- Stored on any one of the computer readable medium (media), the present invention includes software for controlling both the hardware of the general purpose/specialized computer or microprocessor, and for enabling the computer or microprocessor to interact with a human user or other mechanism utilizing the results of the present invention. Such software may include, but is not limited to, device drivers, operating systems, execution environments/containers, and user applications.
- The foregoing description of preferred embodiments of the present invention has been provided for the purposes of illustration and description. It is not intended to be exhaustive or to limit the invention to the precise forms disclosed. Many modifications and variations will be apparent to one of ordinary skill in the relevant arts. For example, steps performed in the embodiments of the invention disclosed can be performed in alternate orders, certain steps can be omitted, and additional steps can be added. The embodiments were chosen and described in order to best explain the principles of the invention and its practical application, thereby enabling others skilled in the art to understand the invention for various embodiments and with various modifications that are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.
Claims (21)
1. A multipool system to connect to database instances comprising:
multiple connection pools, the connection pools adapted to provide connections to database instances; and
a multipool manager adapted to select and set up connections to a database instance through a connection pool, the multipool manager adapted to keep track of dead connection pools between requests for connections.
2. The multipool system of claim 1 , wherein the multipool manager tests whether a connection pool has revived.
3. The multipool system of claim 2 , wherein the test is done in the background asynchronously.
4. The multipool system of claim 2 , wherein the test is done periodically with a time period that can be set by an application.
5. The multipool system of claim 1 , wherein the multipool manager sends connections through a primary connection pool preferentially.
6. The multipool system of claim 5 , wherein there is spillover to a secondary connection pool
7. The multipool system of claim 1 , wherein the multipool manager load balances connections through multiple connection pools.
8. The multipool system of claim 1 , wherein the multipool manager check with an application before switching connection pools.
9. The multipool system of claim 8 , wherein the multipool manager uses a callback interface.
10. The multipool system of claim 8 , wherein callback information is registered with multipool system by the application.
11. The multipool system of claim 1 , wherein the multipool manager maintains a list of active connection pools and uses the list to determine what connection pool to connect through.
12. A multipool manager adapted to select and set up connections to a database instance through a connection pool, the multipool manager adapted to keep track of dead connection pools and wherein the multipool manager implements a selection method in which the multipool manager avoids selecting dead connection pools to provide a connection for an application.
13. The multipool manager of claim 12 , wherein the multipool manager tests whether a connection pool has revived.
14. The multipool manager of claim 12 , wherein the multipool manager sends connections through a primary connection pool preferentially.
15. The multipool manager of claim 12 , wherein the multipool manager load balances connections through multiple connection pools.
16. The multipool manager of claim 12 , wherein the multipool manager checks with an application before switching connection pools.
17. The multipool manager of claim 12 , wherein the multipool manager adapted to maintain a list of active connection pools and to use the list to determine what connection pool to connect through.
18. A multipool system to connect to database instances comprising:
multiple connection pools, the connection pools adapted to provide connections to database instances; and
a multipool manager adapted to select and set up connections to a database instance through a connection pool, the multipool manager adapted to keep track of dead connection pools and to asynchronously test whether a connection pool is revived.
19. The multipool system of claim 18 , wherein the multipool manager sends connections through a primary connection pool preferentially.
20. The multipool system of claim 18 , wherein the multipool manager load balances connections through multiple connection pools.
21. The multipool manager of claim 18 , wherein the multipool manager checks with an application before switching connection pools.
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Cited By (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20080228923A1 (en) * | 2007-03-13 | 2008-09-18 | Oracle International Corporation | Server-Side Connection Resource Pooling |
US20090172463A1 (en) * | 2007-04-30 | 2009-07-02 | Sap Ag | Method, system and machine accessible medium of a reconnect mechanism in a distributed system (cluster-wide reconnect mechanism) |
US20100217872A1 (en) * | 2009-02-26 | 2010-08-26 | Microsoft Corporation | Notification model over a server-to-server connection pool |
US20100332594A1 (en) * | 2004-12-30 | 2010-12-30 | Prabakar Sundarrajan | Systems and methods for automatic installation and execution of a client-side acceleration program |
US20110218981A1 (en) * | 2010-03-03 | 2011-09-08 | Retnakumari Sanju K | Connection handler and method for providing applications with heterogeneous connection objects |
US20120166483A1 (en) * | 2010-12-28 | 2012-06-28 | Akshat Choudhary | Systems and Methods for Database Proxy Request Switching |
CN103067293A (en) * | 2012-12-31 | 2013-04-24 | 北京京东世纪贸易有限公司 | Method and system for multiplex and connection management of a load balancer |
US8848710B2 (en) | 2005-01-24 | 2014-09-30 | Citrix Systems, Inc. | System and method for performing flash caching of dynamically generated objects in a data communication network |
US8892778B2 (en) | 2004-07-23 | 2014-11-18 | Citrix Systems, Inc. | Method and systems for securing remote access to private networks |
US8914522B2 (en) | 2004-07-23 | 2014-12-16 | Citrix Systems, Inc. | Systems and methods for facilitating a peer to peer route via a gateway |
CN104239365A (en) * | 2013-06-24 | 2014-12-24 | 北京新媒传信科技有限公司 | Database connection pool and method for acquiring links in database connection pool |
US20150006726A1 (en) * | 2013-06-28 | 2015-01-01 | Oracle International Corporation | System and method for cloud connection pool |
US8954595B2 (en) | 2004-12-30 | 2015-02-10 | Citrix Systems, Inc. | Systems and methods for providing client-side accelerated access to remote applications via TCP buffering |
CN104750546A (en) * | 2013-12-30 | 2015-07-01 | 中国移动通信集团公司 | Method and system for adjusting connection tank |
US9258196B2 (en) | 2014-02-05 | 2016-02-09 | International Business Machines Corporation | Composite service pre-provisioning |
US9612641B2 (en) | 2010-11-17 | 2017-04-04 | International Business Machines Corporation | Adjusting the connection idle timeout in connection pools |
US9929916B1 (en) * | 2013-05-02 | 2018-03-27 | Aspen Technology, Inc. | Achieving stateful application software service behavior in distributed stateless systems |
USD863347S1 (en) | 2014-02-14 | 2019-10-15 | Aspen Technology, Inc. | Display screen with graphical user interface |
US10726029B2 (en) | 2010-12-28 | 2020-07-28 | Citrix Systems, Inc. | Systems and methods for database proxy request switching |
US10909088B2 (en) | 2017-09-06 | 2021-02-02 | Oracle International Corporation | System and method for high availability and load balancing in a database environment |
US10909211B2 (en) * | 2016-08-12 | 2021-02-02 | Oracle International Corporation | System and method for control of maximum connections in a connection pool environment |
US11290540B2 (en) | 2016-08-12 | 2022-03-29 | Oracle International Corporation | System and method for use of server-side connection pool tagging in a multi-tenant environment |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8015280B2 (en) * | 2007-10-01 | 2011-09-06 | Ebay Inc. | Method and system for intelligent feature degradation in response to a network deficiency detection |
US8566439B2 (en) * | 2007-10-01 | 2013-10-22 | Ebay Inc | Method and system for intelligent request refusal in response to a network deficiency detection |
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US10698770B1 (en) * | 2019-04-10 | 2020-06-30 | Capital One Services, Llc | Regionally agnostic in-memory database arrangements with reconnection resiliency |
CN115328978B (en) * | 2022-06-27 | 2023-11-17 | 光大环境科技(中国)有限公司 | Connection method of connection pool and server |
Citations (66)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US730378A (en) * | 1902-08-28 | 1903-06-09 | Albert Leslie Lambert | Tube-closure. |
US1232272A (en) * | 1917-03-10 | 1917-07-03 | Clem Frazier | Inflation-valve. |
US1837345A (en) * | 1930-08-06 | 1931-12-22 | Niles Steel Products Company | Closure for cylindrical members |
US1976589A (en) * | 1933-04-20 | 1934-10-09 | Lock Joint Pipe Co | Pipe joint |
US3120968A (en) * | 1960-04-21 | 1964-02-11 | John H Calvin | Quick disconnect coupling with ring detent |
US3780773A (en) * | 1971-06-17 | 1973-12-25 | S Haugen | Closure for multiple passage conduit |
US4093279A (en) * | 1976-09-02 | 1978-06-06 | Fib-R-Fit Inc. | Quick connect-disconnect pipe coupling |
US4136885A (en) * | 1977-01-26 | 1979-01-30 | Kupfer-Asbest-Co. Gustav Bach | Axial shaft sealing unit for sealing a stationary machine part relative to a rotatable machine part |
US4158407A (en) * | 1977-10-17 | 1979-06-19 | Rest Frederick G | Journal guard |
US4193616A (en) * | 1978-05-18 | 1980-03-18 | Dana Corporation | Quick connect fitting |
US4376525A (en) * | 1979-07-25 | 1983-03-15 | Raoul Fremy | Couplings for flexible conduits and the like |
US4423892A (en) * | 1980-10-29 | 1984-01-03 | Bartholomew Donald D | Swivelable quick connector assembly |
US4483543A (en) * | 1983-01-19 | 1984-11-20 | Otis Engineering Corporation | Seals |
US4483371A (en) * | 1983-07-22 | 1984-11-20 | Susin Victor G | Protective holder for hose tip assembly |
US4601497A (en) * | 1980-10-29 | 1986-07-22 | Proprietary Technology | Swivelable quick connector assembly |
US4632434A (en) * | 1985-07-08 | 1986-12-30 | Murray Corporation | Coupling means for tubular members |
US4647012A (en) * | 1985-01-29 | 1987-03-03 | Bayerische Motoren Werke Aktiengesellschaft | Injection valve for mixture-compressing internal combustion engines |
US4681351A (en) * | 1982-03-22 | 1987-07-21 | Proprietary Technology, Inc. | Swivelable quick connector assembly |
US4753458A (en) * | 1986-08-28 | 1988-06-28 | Harvard Industries, Inc. | Quick connector assembly |
US4846506A (en) * | 1987-09-04 | 1989-07-11 | U.S. Plastics Corporation | Quick connect coupling |
US4869534A (en) * | 1988-09-26 | 1989-09-26 | Huron Products Corporation | Swivelable quick connector |
US4915136A (en) * | 1980-10-29 | 1990-04-10 | Proprietary Technology, Inc. | Stuffer plug quick connector assembly |
US5033513A (en) * | 1980-10-29 | 1991-07-23 | Proprietary Technology, Inc. | Swivelable quick connector assembly |
US5046763A (en) * | 1990-02-01 | 1991-09-10 | Teleflex Incorporated | Quick connect hose coupling assembly |
US5168902A (en) * | 1991-02-22 | 1992-12-08 | Hood Joy S | Tube plugging method |
US5195787A (en) * | 1990-01-16 | 1993-03-23 | Proprietary Technology, Inc. | Quick connector with heavy-duty retainer |
US5219188A (en) * | 1991-01-09 | 1993-06-15 | Sanoh Kogyo Kabushiki Kaisha | Construction for preventing incomplete connection of pipes |
US5275443A (en) * | 1992-09-15 | 1994-01-04 | Itt Corporation | Sliding collar quick connect |
US5342095A (en) * | 1992-09-29 | 1994-08-30 | Itt Corporation | High pressure quick connector |
US5364131A (en) * | 1993-02-01 | 1994-11-15 | Ford Motor Company | Quick-connect tubular coupling |
US5395140A (en) * | 1993-05-13 | 1995-03-07 | Enhanced Applications, L.C. | Secondary latch and indicator for fluid coupling |
US5401063A (en) * | 1993-07-19 | 1995-03-28 | Enhanced Applications, L.C. | Primary/secondary retainer for beaded/flared tubing |
US5405175A (en) * | 1993-09-24 | 1995-04-11 | Siemens Automotive L.P. | Clip attachment of fuel tube to fuel rail |
US5472016A (en) * | 1993-10-04 | 1995-12-05 | Itt Corporation | Quick connector stuffer pin |
US5492371A (en) * | 1994-11-02 | 1996-02-20 | Itt Corporation | Garter spring stuffer pack quick connector |
US5542716A (en) * | 1994-11-04 | 1996-08-06 | Itt Corporation | Quick connector with snap-on retainer |
US5683117A (en) * | 1995-12-14 | 1997-11-04 | Flex Technologies, Inc. | Retainer clip for a connector |
US5730481A (en) * | 1994-11-04 | 1998-03-24 | Itt Automotive, Inc. | Quick connector with snap-on retainer |
US5782502A (en) * | 1995-12-29 | 1998-07-21 | Itt Automotive, Inc. | Radial-release quick connector |
US5863077A (en) * | 1996-12-20 | 1999-01-26 | Itt Automotive, Inc. | Quick connector with snap-on frangible retainer |
US5882048A (en) * | 1992-05-29 | 1999-03-16 | Tokai Rubber Industries, Ltd. | Hose connecting structure |
US5924746A (en) * | 1996-05-10 | 1999-07-20 | Trinova Gmbh | Rapid coupling |
US5951063A (en) * | 1995-06-07 | 1999-09-14 | Itt Manufacturing Enterprises, Inc. | Quick connector with snap-on retainer having enhanced engagement |
US6130404A (en) * | 1997-03-03 | 2000-10-10 | Itt Automotive, Inc. | Electro-optical removal of plastic layer bonded to a metal tube |
US6142537A (en) * | 1997-09-30 | 2000-11-07 | Nitta Moore Company | Connector |
US6155612A (en) * | 1997-11-17 | 2000-12-05 | Itt Manufacturing Enterprises, Inc. | Hybrid quick connector |
US6173998B1 (en) * | 1998-07-16 | 2001-01-16 | Rasmussen Gmbh | Plug-in coupling for connecting two fluid conduits |
US6186561B1 (en) * | 1996-06-07 | 2001-02-13 | Sanoh Kogyo Kabushiki Kaisha | Retainer for piping connector |
US6234544B1 (en) * | 1995-09-26 | 2001-05-22 | Proprietary Technology, Inc. | Quick connector with confirmation feature |
US6293596B1 (en) * | 1999-01-06 | 2001-09-25 | Itt Manufacturing Enterprises, Inc. | Quick connector with after incident indicator clip |
US6325107B1 (en) * | 1994-12-29 | 2001-12-04 | Usui Kokusai Sangyo Kaisha Limited | Metal pipeline having a protective coating layer for an automobile |
US6358581B1 (en) * | 1997-05-20 | 2002-03-19 | Usui Kokusai Sangyo Kaisha Ltd. | Multiple coat metal pipe and its fabrication method |
US6371529B1 (en) * | 1999-12-28 | 2002-04-16 | Itt Manufacturing Enterprises, Inc. | Quick connector with swivelable retainer housing |
US6431612B1 (en) * | 2000-12-28 | 2002-08-13 | Itt Manufacturing Enterprises, Inc. | Air flow conduit quick connector |
US6490610B1 (en) * | 1997-05-30 | 2002-12-03 | Oracle Corporation | Automatic failover for clients accessing a resource through a server |
US6520546B2 (en) * | 2000-12-27 | 2003-02-18 | Itt Manufacturing Enterprises, Inc. | Quick connector release tool |
US6542712B2 (en) * | 2000-06-30 | 2003-04-01 | Ricoh Company, Ltd. | Method and apparatus for toner image fixing using a sheet-shaped pressing member |
US20040006711A1 (en) * | 2002-05-10 | 2004-01-08 | Oracle International Corporation | Method and mechanism for implementing tagged session pools |
US6757950B2 (en) * | 2002-11-15 | 2004-07-06 | Itt Manufacturing Enterprises, Inc. | Rotatable quick connector stuffer pin |
US20040221031A1 (en) * | 2003-04-29 | 2004-11-04 | Oracle International Corporation | Method and apparatus using connection pools in communication networks |
US20040250248A1 (en) * | 2003-02-24 | 2004-12-09 | Halpern Eric M. | System and method for server load balancing and server affinity |
US6834891B2 (en) * | 2001-01-15 | 2004-12-28 | Sanoh Kogyo Kabushiki Kaisha | Pipe joint |
US6846021B2 (en) * | 2002-05-04 | 2005-01-25 | Ti Automotive (Fuldabruck) Gmbh | Tube-end fitting |
US20050038801A1 (en) * | 2003-08-14 | 2005-02-17 | Oracle International Corporation | Fast reorganization of connections in response to an event in a clustered computing system |
US6869110B2 (en) * | 2001-01-09 | 2005-03-22 | Sanoh Kogyo Kabushiki Kaisha | Pipe joint |
US20070226359A1 (en) * | 2002-10-31 | 2007-09-27 | Bea Systems, Inc. | System and method for providing java based high availability clustering framework |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6173311B1 (en) | 1997-02-13 | 2001-01-09 | Pointcast, Inc. | Apparatus, method and article of manufacture for servicing client requests on a network |
US5987621A (en) * | 1997-04-25 | 1999-11-16 | Emc Corporation | Hardware and software failover services for a file server |
US6199110B1 (en) | 1997-05-30 | 2001-03-06 | Oracle Corporation | Planned session termination for clients accessing a resource through a server |
US6674713B1 (en) * | 1999-02-23 | 2004-01-06 | Cisco Technology, Inc. | Method and apparatus for providing continuous voice and call communications between a data network and a telephony network |
US7337441B2 (en) * | 2001-07-17 | 2008-02-26 | Bea Systems, Inc. | System and method for prepreparing a transaction process involving a chain of servers in a circular flow |
US7178050B2 (en) * | 2002-02-22 | 2007-02-13 | Bea Systems, Inc. | System for highly available transaction recovery for transaction processing systems |
US7317390B2 (en) * | 2003-06-11 | 2008-01-08 | Quantum Magnetics, Inc. | Screening checkpoint for passengers and baggage |
US8223632B2 (en) * | 2003-12-23 | 2012-07-17 | At&T Intellectual Property I, L.P. | Method and system for prioritized rerouting of logical circuit data in a data network |
-
2005
- 2005-12-05 US US11/294,147 patent/US20060146877A1/en not_active Abandoned
- 2005-12-05 US US11/294,214 patent/US7761502B2/en active Active
- 2005-12-21 CN CN200580045638.6A patent/CN101095109A/en active Pending
Patent Citations (69)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US730378A (en) * | 1902-08-28 | 1903-06-09 | Albert Leslie Lambert | Tube-closure. |
US1232272A (en) * | 1917-03-10 | 1917-07-03 | Clem Frazier | Inflation-valve. |
US1837345A (en) * | 1930-08-06 | 1931-12-22 | Niles Steel Products Company | Closure for cylindrical members |
US1976589A (en) * | 1933-04-20 | 1934-10-09 | Lock Joint Pipe Co | Pipe joint |
US3120968A (en) * | 1960-04-21 | 1964-02-11 | John H Calvin | Quick disconnect coupling with ring detent |
US3780773A (en) * | 1971-06-17 | 1973-12-25 | S Haugen | Closure for multiple passage conduit |
US4093279A (en) * | 1976-09-02 | 1978-06-06 | Fib-R-Fit Inc. | Quick connect-disconnect pipe coupling |
US4136885A (en) * | 1977-01-26 | 1979-01-30 | Kupfer-Asbest-Co. Gustav Bach | Axial shaft sealing unit for sealing a stationary machine part relative to a rotatable machine part |
US4158407A (en) * | 1977-10-17 | 1979-06-19 | Rest Frederick G | Journal guard |
US4193616A (en) * | 1978-05-18 | 1980-03-18 | Dana Corporation | Quick connect fitting |
US4376525A (en) * | 1979-07-25 | 1983-03-15 | Raoul Fremy | Couplings for flexible conduits and the like |
US4423892A (en) * | 1980-10-29 | 1984-01-03 | Bartholomew Donald D | Swivelable quick connector assembly |
US4601497A (en) * | 1980-10-29 | 1986-07-22 | Proprietary Technology | Swivelable quick connector assembly |
US4915136A (en) * | 1980-10-29 | 1990-04-10 | Proprietary Technology, Inc. | Stuffer plug quick connector assembly |
US5033513A (en) * | 1980-10-29 | 1991-07-23 | Proprietary Technology, Inc. | Swivelable quick connector assembly |
US4681351A (en) * | 1982-03-22 | 1987-07-21 | Proprietary Technology, Inc. | Swivelable quick connector assembly |
US4483543A (en) * | 1983-01-19 | 1984-11-20 | Otis Engineering Corporation | Seals |
US4483371A (en) * | 1983-07-22 | 1984-11-20 | Susin Victor G | Protective holder for hose tip assembly |
US4647012A (en) * | 1985-01-29 | 1987-03-03 | Bayerische Motoren Werke Aktiengesellschaft | Injection valve for mixture-compressing internal combustion engines |
US4632434A (en) * | 1985-07-08 | 1986-12-30 | Murray Corporation | Coupling means for tubular members |
US4753458A (en) * | 1986-08-28 | 1988-06-28 | Harvard Industries, Inc. | Quick connector assembly |
US4846506A (en) * | 1987-09-04 | 1989-07-11 | U.S. Plastics Corporation | Quick connect coupling |
US4869534A (en) * | 1988-09-26 | 1989-09-26 | Huron Products Corporation | Swivelable quick connector |
US5195787A (en) * | 1990-01-16 | 1993-03-23 | Proprietary Technology, Inc. | Quick connector with heavy-duty retainer |
US5046763A (en) * | 1990-02-01 | 1991-09-10 | Teleflex Incorporated | Quick connect hose coupling assembly |
US5219188A (en) * | 1991-01-09 | 1993-06-15 | Sanoh Kogyo Kabushiki Kaisha | Construction for preventing incomplete connection of pipes |
US5168902A (en) * | 1991-02-22 | 1992-12-08 | Hood Joy S | Tube plugging method |
US5882048A (en) * | 1992-05-29 | 1999-03-16 | Tokai Rubber Industries, Ltd. | Hose connecting structure |
US5275443A (en) * | 1992-09-15 | 1994-01-04 | Itt Corporation | Sliding collar quick connect |
US5342095A (en) * | 1992-09-29 | 1994-08-30 | Itt Corporation | High pressure quick connector |
US5364131A (en) * | 1993-02-01 | 1994-11-15 | Ford Motor Company | Quick-connect tubular coupling |
US5395140A (en) * | 1993-05-13 | 1995-03-07 | Enhanced Applications, L.C. | Secondary latch and indicator for fluid coupling |
US5401063A (en) * | 1993-07-19 | 1995-03-28 | Enhanced Applications, L.C. | Primary/secondary retainer for beaded/flared tubing |
US5405175A (en) * | 1993-09-24 | 1995-04-11 | Siemens Automotive L.P. | Clip attachment of fuel tube to fuel rail |
US5472016A (en) * | 1993-10-04 | 1995-12-05 | Itt Corporation | Quick connector stuffer pin |
US5492371A (en) * | 1994-11-02 | 1996-02-20 | Itt Corporation | Garter spring stuffer pack quick connector |
US5707084A (en) * | 1994-11-02 | 1998-01-13 | Itt Corporation | Garter spring stuffer pack quick connector |
US5730481A (en) * | 1994-11-04 | 1998-03-24 | Itt Automotive, Inc. | Quick connector with snap-on retainer |
US5542716A (en) * | 1994-11-04 | 1996-08-06 | Itt Corporation | Quick connector with snap-on retainer |
US6325107B1 (en) * | 1994-12-29 | 2001-12-04 | Usui Kokusai Sangyo Kaisha Limited | Metal pipeline having a protective coating layer for an automobile |
US5951063A (en) * | 1995-06-07 | 1999-09-14 | Itt Manufacturing Enterprises, Inc. | Quick connector with snap-on retainer having enhanced engagement |
US6234544B1 (en) * | 1995-09-26 | 2001-05-22 | Proprietary Technology, Inc. | Quick connector with confirmation feature |
US5683117A (en) * | 1995-12-14 | 1997-11-04 | Flex Technologies, Inc. | Retainer clip for a connector |
US5782502A (en) * | 1995-12-29 | 1998-07-21 | Itt Automotive, Inc. | Radial-release quick connector |
US5924746A (en) * | 1996-05-10 | 1999-07-20 | Trinova Gmbh | Rapid coupling |
US6186561B1 (en) * | 1996-06-07 | 2001-02-13 | Sanoh Kogyo Kabushiki Kaisha | Retainer for piping connector |
US5863077A (en) * | 1996-12-20 | 1999-01-26 | Itt Automotive, Inc. | Quick connector with snap-on frangible retainer |
US6660350B1 (en) * | 1997-03-03 | 2003-12-09 | Itt Automotive, Inc. | Electro-optical removal of plastic layer bonded to a metal tube |
US6130404A (en) * | 1997-03-03 | 2000-10-10 | Itt Automotive, Inc. | Electro-optical removal of plastic layer bonded to a metal tube |
US6358581B1 (en) * | 1997-05-20 | 2002-03-19 | Usui Kokusai Sangyo Kaisha Ltd. | Multiple coat metal pipe and its fabrication method |
US6728747B1 (en) * | 1997-05-30 | 2004-04-27 | Oracle International Corporation | Method and system for implementing failover for database cursors |
US6490610B1 (en) * | 1997-05-30 | 2002-12-03 | Oracle Corporation | Automatic failover for clients accessing a resource through a server |
US6142537A (en) * | 1997-09-30 | 2000-11-07 | Nitta Moore Company | Connector |
US6155612A (en) * | 1997-11-17 | 2000-12-05 | Itt Manufacturing Enterprises, Inc. | Hybrid quick connector |
US6173998B1 (en) * | 1998-07-16 | 2001-01-16 | Rasmussen Gmbh | Plug-in coupling for connecting two fluid conduits |
US6293596B1 (en) * | 1999-01-06 | 2001-09-25 | Itt Manufacturing Enterprises, Inc. | Quick connector with after incident indicator clip |
US6371529B1 (en) * | 1999-12-28 | 2002-04-16 | Itt Manufacturing Enterprises, Inc. | Quick connector with swivelable retainer housing |
US6542712B2 (en) * | 2000-06-30 | 2003-04-01 | Ricoh Company, Ltd. | Method and apparatus for toner image fixing using a sheet-shaped pressing member |
US6520546B2 (en) * | 2000-12-27 | 2003-02-18 | Itt Manufacturing Enterprises, Inc. | Quick connector release tool |
US6431612B1 (en) * | 2000-12-28 | 2002-08-13 | Itt Manufacturing Enterprises, Inc. | Air flow conduit quick connector |
US6869110B2 (en) * | 2001-01-09 | 2005-03-22 | Sanoh Kogyo Kabushiki Kaisha | Pipe joint |
US6834891B2 (en) * | 2001-01-15 | 2004-12-28 | Sanoh Kogyo Kabushiki Kaisha | Pipe joint |
US6846021B2 (en) * | 2002-05-04 | 2005-01-25 | Ti Automotive (Fuldabruck) Gmbh | Tube-end fitting |
US20040006711A1 (en) * | 2002-05-10 | 2004-01-08 | Oracle International Corporation | Method and mechanism for implementing tagged session pools |
US20070226359A1 (en) * | 2002-10-31 | 2007-09-27 | Bea Systems, Inc. | System and method for providing java based high availability clustering framework |
US6757950B2 (en) * | 2002-11-15 | 2004-07-06 | Itt Manufacturing Enterprises, Inc. | Rotatable quick connector stuffer pin |
US20040250248A1 (en) * | 2003-02-24 | 2004-12-09 | Halpern Eric M. | System and method for server load balancing and server affinity |
US20040221031A1 (en) * | 2003-04-29 | 2004-11-04 | Oracle International Corporation | Method and apparatus using connection pools in communication networks |
US20050038801A1 (en) * | 2003-08-14 | 2005-02-17 | Oracle International Corporation | Fast reorganization of connections in response to an event in a clustered computing system |
Cited By (36)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8914522B2 (en) | 2004-07-23 | 2014-12-16 | Citrix Systems, Inc. | Systems and methods for facilitating a peer to peer route via a gateway |
US9219579B2 (en) | 2004-07-23 | 2015-12-22 | Citrix Systems, Inc. | Systems and methods for client-side application-aware prioritization of network communications |
US8892778B2 (en) | 2004-07-23 | 2014-11-18 | Citrix Systems, Inc. | Method and systems for securing remote access to private networks |
US8954595B2 (en) | 2004-12-30 | 2015-02-10 | Citrix Systems, Inc. | Systems and methods for providing client-side accelerated access to remote applications via TCP buffering |
US8856777B2 (en) | 2004-12-30 | 2014-10-07 | Citrix Systems, Inc. | Systems and methods for automatic installation and execution of a client-side acceleration program |
US20100332594A1 (en) * | 2004-12-30 | 2010-12-30 | Prabakar Sundarrajan | Systems and methods for automatic installation and execution of a client-side acceleration program |
US8848710B2 (en) | 2005-01-24 | 2014-09-30 | Citrix Systems, Inc. | System and method for performing flash caching of dynamically generated objects in a data communication network |
US20080228923A1 (en) * | 2007-03-13 | 2008-09-18 | Oracle International Corporation | Server-Side Connection Resource Pooling |
US8713186B2 (en) * | 2007-03-13 | 2014-04-29 | Oracle International Corporation | Server-side connection resource pooling |
US7937611B2 (en) * | 2007-04-30 | 2011-05-03 | Sap Ag | Method, system and machine accessible medium of a reconnect mechanism in a distributed system (cluster-wide reconnect mechanism) |
US20090172463A1 (en) * | 2007-04-30 | 2009-07-02 | Sap Ag | Method, system and machine accessible medium of a reconnect mechanism in a distributed system (cluster-wide reconnect mechanism) |
US20100217872A1 (en) * | 2009-02-26 | 2010-08-26 | Microsoft Corporation | Notification model over a server-to-server connection pool |
US8886787B2 (en) | 2009-02-26 | 2014-11-11 | Microsoft Corporation | Notification for a set of sessions using a single call issued from a connection pool |
US20110218981A1 (en) * | 2010-03-03 | 2011-09-08 | Retnakumari Sanju K | Connection handler and method for providing applications with heterogeneous connection objects |
CN102193820A (en) * | 2010-03-03 | 2011-09-21 | 软件股份公司 | Connection handler and method for providing applications with heterogeneous connection objects |
US9547536B2 (en) * | 2010-03-03 | 2017-01-17 | Software Ag | Connection handler and method for providing applications with heterogeneous connection objects |
US9612641B2 (en) | 2010-11-17 | 2017-04-04 | International Business Machines Corporation | Adjusting the connection idle timeout in connection pools |
US10726029B2 (en) | 2010-12-28 | 2020-07-28 | Citrix Systems, Inc. | Systems and methods for database proxy request switching |
US20120166483A1 (en) * | 2010-12-28 | 2012-06-28 | Akshat Choudhary | Systems and Methods for Database Proxy Request Switching |
US9589029B2 (en) * | 2010-12-28 | 2017-03-07 | Citrix Systems, Inc. | Systems and methods for database proxy request switching |
CN103067293A (en) * | 2012-12-31 | 2013-04-24 | 北京京东世纪贸易有限公司 | Method and system for multiplex and connection management of a load balancer |
US9929916B1 (en) * | 2013-05-02 | 2018-03-27 | Aspen Technology, Inc. | Achieving stateful application software service behavior in distributed stateless systems |
CN104239365A (en) * | 2013-06-24 | 2014-12-24 | 北京新媒传信科技有限公司 | Database connection pool and method for acquiring links in database connection pool |
US9948571B2 (en) * | 2013-06-28 | 2018-04-17 | Oracle International Corporation | System and method for cloud connection pool |
CN105339896A (en) * | 2013-06-28 | 2016-02-17 | 甲骨文国际公司 | System and method for cloud connection pool |
US10298514B2 (en) * | 2013-06-28 | 2019-05-21 | Oracle International Corporation | System and method for cloud connection pool |
US20150006726A1 (en) * | 2013-06-28 | 2015-01-01 | Oracle International Corporation | System and method for cloud connection pool |
CN104750546A (en) * | 2013-12-30 | 2015-07-01 | 中国移动通信集团公司 | Method and system for adjusting connection tank |
US9590873B2 (en) | 2014-02-05 | 2017-03-07 | International Business Machines Corporation | Composite service pre-provisioning |
US9258196B2 (en) | 2014-02-05 | 2016-02-09 | International Business Machines Corporation | Composite service pre-provisioning |
USD863347S1 (en) | 2014-02-14 | 2019-10-15 | Aspen Technology, Inc. | Display screen with graphical user interface |
US10909211B2 (en) * | 2016-08-12 | 2021-02-02 | Oracle International Corporation | System and method for control of maximum connections in a connection pool environment |
US11290540B2 (en) | 2016-08-12 | 2022-03-29 | Oracle International Corporation | System and method for use of server-side connection pool tagging in a multi-tenant environment |
US10909088B2 (en) | 2017-09-06 | 2021-02-02 | Oracle International Corporation | System and method for high availability and load balancing in a database environment |
US10915506B2 (en) | 2017-09-06 | 2021-02-09 | Oracle International Corporation | System and method for row buffering in a database environment |
US11100058B2 (en) | 2017-09-06 | 2021-08-24 | Oracle International Corporation | System and method for connection concentration in a database environment |
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US20060146878A1 (en) | 2006-07-06 |
CN101095109A (en) | 2007-12-26 |
US7761502B2 (en) | 2010-07-20 |
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