JP3518312B2 - Transaction error notification system - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transaction control system, and more particularly to a transaction abnormality notification system in a distributed transaction processing system in which a plurality of transaction processing systems are interconnected via a communication network.

[0002]

2. Description of the Related Art In a conventional distributed transaction processing system, when an input transaction cannot be resolved within the self processing system, a transaction processing system with a small load can be requested to perform processing.

Similarly, if a transaction input from a terminal or an application (AP) newly creates a transaction in the own processing system and the created transaction cannot be processed in the own processing system, it can be executed. Other processing systems can be requested. Even in that case, the processing system of the transfer destination executes the requested transaction as soon as the execution environment is prepared, and returns the processing result to the processing system of the transfer source.

However, during that time, if the path between the two systems is cut off due to a communication failure or a system down at the transfer destination, the processing result cannot be returned to the transfer source, and the user cannot get the path. Only the disconnection is reported, not the information about the requested transaction to the transfer destination.

As a countermeasure against a failure related to a distributed processing system, for example, Japanese Patent Laid-Open No. 8-314875 discloses a system configuration that substitutes a function of an abnormal node between healthy distributed nodes when a failure is detected in the distributed nodes. Is proposed. Further, Japanese Patent Laid-Open No. 7-141309 discloses that
If there is a failure in the data transmission destination host, refer to the data transmission history to switch the transmission destination of the changed data, and notify the executable host of the change of the data processing execution destination without being affected by the downed host. An information processing device that enables the above has been proposed. However, these prior arts do not disclose any specific means for providing the user and the system administrator with detailed information when a failure occurs.

[0006]

As described above, in the conventional distributed transaction processing system, when the communication path between the processing systems is disconnected due to a failure, the user is notified only that the path is disconnected. It is only possible to provide sufficient maintenance information,
There are problems in terms of maintainability, operability, and reliability.

The reason is that if the path between the two systems is cut off due to a communication failure or the system down at the transfer destination, the processing result of the transaction executed at the transfer destination system cannot be returned to the transfer source, and it is used. This is because the person is only notified that the path has been disconnected, and is not notified of the information regarding the requested transaction to the transfer destination.

Therefore, the present invention has been made in view of the above problems, and an object of the present invention is to provide a distributed transaction processing system in which a plurality of transaction processing systems are connected via a communication network. It is an object of the present invention to provide a failure notification system capable of providing a user with information regarding a transaction when a path between the two systems is disconnected due to a system down of a transfer destination.

[0009]

To achieve the above object, according to an aspect of the present invention, in a distributed transaction processing system in which a plurality of transaction processing systems are connected to each other via a communication network, the other from a transaction processing system transaction When requesting the processing system to execute a transaction, the transaction identification information and the information of the other transaction processing system of the request destination are stored as transfer information, and when a failure occurs, the one transaction processing system can When recognizing the information of the other transaction processing system that has been disconnected, the presence or absence of a transaction requesting processing to the other transaction processing system is searched,
Corresponds to a case where a transaction is present to generate a notification transaction for notifying the information of the transaction by executing comprises means conveys transaction information to the user, the one transaction processing cis
The system uses the other information of the transfer destination as transaction information.
Save the initialization time of the transaction processing system in the storage unit.
Yes, and the path reconnects after the path was disconnected due to a failure
First from the other transaction processing system continued
The initialization time is received and the initialization time is stored in the storage unit.
Compared with the existing initialization time, it must match
If the other transaction processing system is initialized,
It is judged that it was started up and the notification transaction
Configured to generate and run the application.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described. The present invention, in a distributed transaction processing system in which a plurality of transaction processing systems are connected via a communication network, transfers a transaction that cannot be resolved in the transaction processing system into which the transaction is submitted to an executable transaction processing system. When a transaction is executed at the destination, a failure occurs after the transfer, and the processing system on the requesting side of the transaction recognizes the failure and generates a transaction for notifying the user.

More specifically, in the embodiment of the present invention, in the distributed transaction processing system in which a plurality of transaction processing systems are connected to each other via a communication network (5 in FIG. 1), each transaction processing system ( 1 is a communication unit (10a, 10b in FIG. 1) that controls communication between systems.
And the transaction control unit (40a and 40b in FIG. 1)
And an information storage unit (50a and 50b in FIG. 1), and the transaction control unit includes a transaction processing unit (20a and 20b in FIG. 1) and a transaction failure processing unit (30a and 30b in FIG. 1).

The transaction processing unit (20a, 20b in FIG. 1) determines whether the transaction can be processed by the own processing system and distributes the transaction to the own processing system or another processing system (21a in FIG. 1). , 21b), the transaction is transferred to the executable processing system, and the transaction information and the identification information of the other processing system are used as the transfer information when transferring the transaction to another processing system (5 in FIG. 1).
0a, 50b) means (22a, 22 in FIG. 1)
b) and means for controlling the execution of the transaction (Fig. 1
23a, 23b), and the transaction failure processing unit (30a, 30b in FIG. 1) receives the identification information of the processing system whose path is disconnected from the communication unit when a failure occurs between the processing systems. In this case, the search means (31a, 31b in FIG. 1) for searching whether or not there is a requested transaction in the processing system by referring to the transfer information stored in the information storage unit, and the corresponding transaction If present, means (32a, 32b in FIG. 1) for generating a notification transaction for notifying the user of the transaction information.

The operation of the embodiment of the present invention will be described with reference to FIG. Input device (1a) to communication network (5)
When a transaction is input to the transaction processing system (100a) via the, the communication unit (10a) sends the transaction to the transaction processing unit (20a), and the transaction execution unit (23a) executes the transaction. But,
For example, this input transaction newly creates a transaction, and the new transaction is processed by the transaction distribution means (21a) in another processing system (100).
When it is determined in step b) that the data can be executed, the information before being transferred by the transaction transfer means (22a) is saved in the transfer information storage area (51a) in the self-processing system (100a), and the communication unit (10a, 10b) is set. It is delivered to the processing system (100b) to be transferred via. In the transfer destination processing system (100b), the transaction is similarly sent to the transaction processing unit (20b) and executed by the transaction executing means (23b).

When the execution of the transaction is completed, a response is promptly returned to the requesting processing system (100a), but during this time, a communication failure occurs or the transfer destination processing system goes down, and the communication path between the processing systems is cut off. If so, the processing system (100a) on the request side recognizes this notification failure, and the transaction failure processing unit (30a).
To notify.

The transaction failure processing section (30a) uses the identification information (system number) of the failed transaction processing system as a key to search for the requested transaction. Then, when the corresponding transaction exists, the information is taken out from the transfer information storage area (51a), the transaction for notifying the user of the information is generated by the notification transaction generating means (32a), and the transaction is executed. It is executed by the means (23a).

[0016]

EXAMPLES Examples of the present invention will be described below with reference to the drawings in order to explain the embodiments of the present invention in more detail.

FIG. 1 is a block diagram showing the overall configuration of an embodiment of a distributed transaction processing system to which the fault notification system of the present invention is applied.

Referring to FIG. 1, the distributed transaction processing system of this embodiment comprises a communication network 5, input devices 1a and 1b such as a plurality of terminals, and a plurality of transaction processing systems 100a and 100b. The processing systems 100a and 100b are the communication network 5
Are configured through each other. A plurality of terminals 1a and 1b are connected to the communication network 5.

The transaction processing system 100a,
100b includes communication units 10a and 10b, transaction control units 40a and 40b, and an information storage unit 50, respectively.
a and 50b.

Transaction control units 40a and 40b
Are transaction processing units 20a and 20b, respectively.
And transaction failure processing units 30a and 30b, and the transaction processing units 20a and 20b are
Transaction distribution means 21a and 21b, respectively
, Transaction transfer means 22a, 22b, and transaction execution means 23a, 23b. The transaction failure processing units 30a, 30b include transaction search means 31a, 31b and notification transaction generation means 32a, 32b, respectively.

The information storage sections 50a and 50b are respectively
It has transfer information storage areas 51a and 51b, transaction information storage areas 52a and 52b, and execution instruction information storage areas 53a and 53b.

Transaction distribution means 21a, 21b
Determines whether the transactions input from the input devices 1a, 1b, etc. can be executed in the own processing system or should be transferred to another processing system to request processing. Transactions to be requested to another processing system are transaction transfer means 22a and 22b.
Then, logical terminal information and transaction information are created as transfer information as shown in FIG. 4, the transaction information section is registered in the transfer information storage areas 51a and 51b, and then transferred to the communication sections 10a and 10b.

The transactions executed by the self-processing system and the transactions generated by the notification transaction generating means 32a, 32b are executed by the transaction executing means 23a, 23b.

Transaction failure notification processing unit 30a,
In the transaction search means 31a and 31b of 30b, when a failure such as disconnection due to communication failure with the transfer destination or path disconnection due to system down occurs after the transaction is transferred to another processing system, there is a transaction being requested to the failed system. Whether or not there is a corresponding transaction is checked by searching the transfer information storage areas 51a and 51b.

If the transaction is found as a result of the search, the notification transaction generating means 32a,
The information of the transaction is set by 32b, and the notification transaction for providing the information to the user is generated.

Information necessary for transfer to the other processing system 100b is stored in the transfer information storage areas 51a and 51b of the information storage units 50a and 50b. As shown in FIG. 4, the transfer information includes logical terminal information and transaction information.

More specifically, referring to FIG. 4, the logical terminal information includes the logical terminal name, the transaction number to be transferred, and the processing system number of the transfer source. As the transaction information, the transaction identifier and the transaction are executed. The transaction information necessary for the transaction is included in the transfer information storage area 51a of the transfer source system 100a. At the time of transfer to another system, these pieces of information are sent, and in the transfer destination system 100b that has received the information, it is written and saved in the transfer information storage area 51b in the format as shown in FIG.

Transaction information storage areas 52a, 5
Information 2b stores information on the transaction being executed. As shown in FIG. 6, a transaction number at start / end and a phase number at start / end, logical terminal control information and transaction stack information, and Includes common areas.

Further, the execution instruction information storage areas 53a, 53
b includes information necessary for execution and information set by the user.

2 and 3 are diagrams for explaining the operation of one embodiment of the present invention. Referring to FIGS. 1 to 3,
The details of the operation of this embodiment will be described.

A transaction input from the input device 1a such as a terminal enters the communication unit 10a via the communication network 5 and is sent to the transaction processing unit 20a.

First, it is judged by the transaction allocating means 21a whether or not it can be executed in the own transaction processing section (step A10 in FIG. 2), and when it is decided to be processed in the own processing system 100a (step A10 in FIG. 2). Yes branch), the transaction is executed by the transaction executing means 23a (step A1 in FIG. 2).
1). Similarly, when a new transaction is generated during execution of the transaction, the transaction allocating means 21a determines whether or not to process the transaction within the own processing system.

When this transaction is to be processed by another processing system, the transaction transfer means 2
2a, the logical terminal information and the transaction information as shown in FIG. 4 are generated (step A12 in FIG. 2), and the transaction information is registered in the transfer information storage area 51a (step A13 in FIG. 2).

After that, the data is transferred from the communication unit 10a to the transfer destination processing system 100b via the communication network 5.

In the transfer destination processing system 100b, when the transferred transaction is received, the transaction allocating means 21b determines whether or not the transaction has been input from the transferred transaction terminal (step A14 in FIG. 2). In the case of the transferred transaction, the transferred information is registered in the transfer information storage area 51b in the format as shown in FIG. 5 (step A15 in FIG. 2).

After a transaction is transferred to another system, if a path disconnection occurs due to a communication failure or a system down of the transfer destination between the two systems, execution of the transferred transaction is not guaranteed.

Therefore, as shown in FIG. 3, when such a failure occurs, the communication unit 10a causes the transfer destination processing system 10 to operate.
When the disconnection of the path to 0b is recognized, the transaction failure processing unit 30a is notified of the system number of the failed system.

Upon receipt of this notification, the transaction failure processing unit 30a first reads the transaction requested by another system from the transfer information storage area 51a by the transaction search means 31a (step B10 in FIG. 3).
The system number in which the failure has occurred and the requested system number are searched for (step B11 in FIG. 3).

As a result of the search, if there is a corresponding transaction, the corresponding data is received and the data is set in the notification transaction (step B12 in FIG. 3). The data to be set includes a system number in which a failure has occurred and a transaction identifier whose execution is unknown.

After that, the corresponding information in the transfer information storage area 51a is cleared (step B13 in FIG. 3), and the notification execution transaction is executed by the transaction execution means 23a of the transaction processing section (step B14 in FIG. 3).

Next, another embodiment of the present invention will be described in detail with reference to the drawings. FIG. 7 is a diagram showing the overall configuration of the distributed processing system according to the second embodiment of this invention. Figure 8
9 and 9 are diagrams for explaining the operation of the second embodiment of the present invention.

Referring to FIG. 7, in the second embodiment of the present invention, the transaction processing systems 100a and 100b of the above-described embodiment shown in FIG. The determination means 33a and 33b are provided.

Transaction execution timing judgment means 33
In a and 33b, the user sets in advance the timing at which the failure notification transaction is activated, and the notification transaction is executed according to this timing information.

The operation of the second embodiment of the present invention will be described in detail with reference to FIGS. 8 and 9.

Since the processing operations shown in steps B10 to B14 of FIGS. 8 and 9 are the same as those of steps B10 to B14 of FIG. 3, the description thereof will be omitted.

In the embodiment shown in FIG. 1, the notification transaction is activated immediately when a communication failure occurs. However, there are cases where it is not necessary to activate the notification transaction each time a communication failure occurs.

Since the transfer information is also stored in the transfer information storage area of the transfer destination, if the restart is started after the system goes down, the requested transaction is executed. However, when the system is initialized and started up after the system goes down, these areas are also cleared, so that the execution of the requested transaction is not guaranteed.

Therefore, in this embodiment, after disconnecting the communication path,
It is up to the user to decide whether to activate the notification transaction immediately, or whether the processing system of the transfer destination is initialized when the path is connected again and the notification transaction is activated when the system is started up. However, the information is stored in the execution instruction information storage area 53a.

Further, as a registration of information before being transferred to another processing system, as shown in FIG. 10, the initialization time of the transfer destination system is also stored as transaction information. This is necessary to determine if the system was initialized when reconnecting the path.

First, the case where a path disconnection occurs will be described with reference to FIG. When the system number of the system in which the failure has occurred is notified by the path disconnection notification, the transaction execution timing determination means 33a, 33b read the data set by the user from the execution instruction information storage area 53a (step C10), and immediately It is determined whether to execute (step C11 in FIG. 8).

If it should be executed immediately, the transfer information is read (step B10 in FIG. 8) and the notification transaction is executed.

If the faulty system is started up when it is initialized when it is restarted, the process is exited in this case (step C12 in FIG. 8).

Regarding the path reconnection, as shown in FIG. 9, first, the communication path connection notification notifies the number of the system where the path reconnection was performed and the system initialization time.

First, from the execution instruction information storage area 53a,
It is determined whether or not to notify at the time of system initialization (step C11 in FIG. 9), data is read from the transfer information storage area 51a, and it is searched whether or not there is a requested transaction in the initialized system (in FIG. 9). Step B11), if present, the initialization time of the system is received, and this system initialization time and transfer information storage area 51a
And the initialization time of the transfer destination system are compared, and if they do not match, it is determined that they have been initialized and started up (step C12 in FIG. 9). In this case, the transfer information is received from the transfer information storage area 51a, and the notification transaction is generated and executed.

Next, a third embodiment of the present invention will be described. FIG. 11 is a diagram showing the configuration of the third exemplary embodiment of the present invention.

Referring to FIG. 11, the third embodiment of the present invention comprises recording media 60a and 60b recording transaction processing programs. This is a storage medium in which the transaction processing programs of the transaction processing systems 100a and 100b are recorded, and these recording media may be magnetic disks, semiconductor memories, or other recording media.

The transaction processing program is transferred from the recording medium 60a, 60b to the processing system 100a, 100b.
Respectively, and controls the operation of the transaction control unit including the communication unit, the transaction processing unit, and the transaction abnormality notification processing unit, thereby realizing the processing of each processing system 100a, 100b shown in FIG.

In the above embodiment, the distributed transaction processing system in which two transaction processing systems are connected has been described as an example, but the present invention is not limited to the configuration of two transaction processing systems. It is needless to say that the present invention can be applied to a distributed transaction processing system configured by connecting an arbitrary number of transaction processing systems.

[0059]

As described above, according to the present invention,
In a distributed transaction processing system that is composed of multiple transaction processing systems, the transaction processing guarantee is significantly improved compared to the conventional system, and the information of the transaction affected by the failure is presented to the user. Therefore, the subsequent processing can be performed smoothly, the user interface is improved, and the system maintainability, reliability, fault tolerance, and safety are improved.

The reason is that in the present invention, the input transaction newly generates a transaction,
If the path is disconnected due to various failures after requesting the processing to another system, the information of the transaction requesting the processing is handed over to a new transaction and activated, so that the user can simply disconnect the path. This is because more transaction information can be provided.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of an exemplary embodiment of the present invention.

FIG. 2 is a diagram for explaining the operation of the embodiment of the present invention.

FIG. 3 is a diagram for explaining the operation of the embodiment of the present invention.

FIG. 4 is a diagram showing an example of transfer information according to an embodiment of the present invention.

FIG. 5 is a diagram showing an example of the contents of a transfer information storage area in the transfer destination system in an embodiment of the present invention.

FIG. 6 is a diagram showing an example of contents of a transaction information storage area in an embodiment of the present invention.

FIG. 7 is a diagram showing a configuration of a second exemplary embodiment of the present invention.

FIG. 8 is a diagram for explaining the operation of the second embodiment of the present invention.

FIG. 9 is a diagram for explaining the operation of the second exemplary embodiment of the present invention.

FIG. 10 is a diagram showing an example of transfer information according to the second embodiment of the present invention.

FIG. 11 is a diagram showing a configuration of a third exemplary embodiment of the present invention.

[Explanation of symbols]

1a, 1b input device 5 communication network 100a, 100b Transaction processing system 10a, 10b Communication unit 20a, 20b Transaction processing unit 21a, 21b Transaction distribution means 22a, 22b Transaction transfer means 23a, 23b Transaction execution means 30a, 30b Transaction failure processing unit 31a, 31b Transaction search means 32a, 32b Notification transaction generating means 33a, 33b Transaction execution timing determination means 40a, 40b Transaction control unit 50a, 50b Information storage unit 51a, 51b Transfer information storage area 52a, 52b Transaction information storage area 53a, 53b execution instruction information storage area 60a, 60b storage medium

Continuation of front page (56) Reference JP-A-7-175766 (JP, A) JP-A-5-346895 (JP, A) JP-A-8-137625 (JP, A) JP-A-8-305612 (JP , A) JP 7-152695 (JP, A) JP 4-23160 (JP, A) JP 62-123553 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB) Name) G06F 15/16-15/177 G06F 11/28-11/34 G06F 15/00

Claims (2)

(57) [Claims] 1. A distributed transaction processing system in which a plurality of transaction processing systems are connected to each other via a communication network, wherein each transaction of the plurality of transaction processing systems.
Transfection processing system, when requesting execution of the transaction <br/> down for the other transaction processing system of the plurality of transaction processing systems, and transaction information
Te, the identification information and the request destination of the transaction to request execution of said other transaction processing system Shi
Stem number of the other transaction processing system
The initialization time, and stored in the information storage unit you Ku Toranzakushi
System and the system number that matches the system number of another transaction processing system whose path was disconnected due to the failure when the failure occurred.
Search whether the system number is stored in the information storage unit
By doing so, a transaction that searches for the presence of a transaction requesting processing to the other transaction processing system
Search means and the other transaction processing system as a result of the search.
If there is a transaction requesting processing to the system, the other transaction processing system in which the failure occurred
System number and identification information of the transaction
Notification that you want to generate a notification transaction, including the data
Transaction generation means and transaction for executing the notification transaction
And executing means , wherein each of the transaction processing systems includes the other transaction processing system from the other transaction processing system in which the path is reconnected after the path is disconnected due to a failure.
Receiving a system number and an initialization time of the processing system Ketori,
The transaction search means uses the other transaction.
The system number of the processing system is the transaction information.
Search for information stored in the information storage unit as
System number of other transaction processing system
Stored in the information storage unit as transaction information
If it is, prior to the initialization time in the information storage unit
It is compared with the initialization time saved as transaction information, and if they do not match, the notification transaction
The transaction generation means uses the other transaction
System number of the transaction processing system and the transaction
Generating a notification transaction including data of the identification information of the application, and the transaction executing means generates the notification transaction.
Transaction anomaly notification system characterized by executing a transaction. 2. A distributed transaction processing system in which a plurality of transaction processing systems are connected to each other via a communication network, wherein each transaction processing system controls a communication between transaction processing systems, and a transaction control unit. And an information storage unit, wherein the transaction control unit determines whether the input transaction can be processed by the own transaction processing system and distributes the transaction to the own transaction processing system or another transaction processing system. Distribution means and the transaction for transferring a transaction to an executable transaction processing system and requesting the execution when transferring to another transaction processing system
Transaction information including the identification information of the transaction and the system number of the other transaction processing system of the request destination.
The distribution, and transaction transfer <br/> means for storing in the information storage unit, a transaction real for controlling the execution of the transaction
A transaction processing unit comprising a row unit, and when a failure occurs, receives the system number of the path from the communication control unit is disconnected transaction processing system between the transaction processing system, said system
Storage of the number that matches the system ID is the information storage unit
By searching if they were, and transaction searching means for searching whether a transaction is in the request to the tiger <br/> Nzakushon processing system in which the path is disconnected, the transaction processing system in which the path is disconnected
If the transaction being requested exists, the user is informed of the transaction processing system whose path has been disconnected.
System number and transaction identification of the request
Notification to generate a notification transaction to notify the different information
A transaction failure processing unit including: a transaction generation unit; and the information storage unit , wherein the information storage unit is the communication unit for notifying the user.
Start an intelligent transaction immediately after the communication path is disconnected
Or destination transaction processing system
However, it is initialized and launched when the path is connected again.
If not, the notification transaction is started.
Whether or not the user's selection information regarding
The transaction transfer means has a line instruction information storage area, and the transaction transfer means stores the transfer information in the transfer information storage area of the information storage unit before transferring the transaction to the other transaction processing system. The system number, the transaction identification information, and the initialization time of the other transaction processing system of the transfer destination are stored, and the notification transaction generation means stores the execution instruction information.
The communication path is cut off based on the data stored in the report storage area.
If the notification transaction should be executed immediately after the disconnection, the notification transaction is generated and the transaction is
Run the notification transaction-transactions executing means, on the other hand, in the case of performing the failure notification at system initialization, the transaction retrieval means, when Path replacement, path of the other connected transaction processing system cis
System number and initialization time, and other transaction
The system number of the transaction processing system is the transaction
Information stored in the information storage section
And other transaction processing system systems
The number is stored in the information storage section as transaction information.
If stored, the initialization time, compared with the transfer information storage initialization time held in the area, if not match, the notification transaction generation hands
The stage is a system of the other transaction processing system.
Generating the notification transaction that notifies the beam number, the transaction identification information in the request, the Trang
A transaction abnormality notification system, characterized in that the notification transaction is executed by a transaction execution means .