JP2705713B2 - Logical system switching method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a system switching method for a computer system having an active system and a standby system, and more particularly to a systematic switching method for a 24 hours operation without stopping an online transaction processing system.

[0002]

2. Description of the Related Art Conventionally, when an operating host of an online transaction processing system is changed without stopping an OS, a batch job automatic starting unit is stopped, a batch processing AP is waited for completion, and a live program used by the batch processing AP is used. After performing the O flag <br/> in such Larry cartridge MT device, implement command switching of online transaction processing system, the corresponding device after confirming the switching process completion online, and the start of the batch job automatic activation means It has to be performed by a skilled operator because of the complicated operation.

Japanese Unexamined Patent Publication No. Hei 4-291628 discloses, as a "hot standby system", a system for improving reliability and switching speed when switching between an active host and a standby host in a hot standby system. However, in this method, when an abnormality occurs in the active host, the operation is automatically switched to the standby host, and the operation cannot be freely performed by the instruction of the operator.

[0004]

Conventionally, every time the logical system is switched, the above steps are performed manually at each step, and the work is complicated and difficult. Also took a lot of time.

An object of the present invention is to provide an online transaction processing system having a hot standby configuration and a batch processing system associated with online processing (hereinafter, transaction processing system and batch processing system are abbreviated as a logical system. ) Can automatically and quickly switch from the active system to the standby system without being aware of the stoppage of the online transaction processing system triggered by a command from the operator. Is to do. This also allows the online transaction processing system 2
An object of the present invention is to make it possible to change a logical system operation mode and perform hardware maintenance during four-hour operation.

[0006]

According to the present invention, as means for solving the above-mentioned problems, logical system switching preparation means for performing logical system switching preparation processing in response to a logical system switching command, and logical system switching preparation means A batch processing AP forcibly terminating means for forcibly terminating the batch processing AP being executed at the time of command input; a drive management means for taking the library cartridge MT device offline in conjunction with the command; Online switching detection means for notifying the management means and the batch processing AP takeover means, batch processing AP takeover means for taking over the forcibly terminated batch processing AP based on a job schedule file, In conjunction with the library cartridge MT Of characterized by having a drive management unit for performing online, thereby, can be performed to switch logic system in a short time regardless of the skill level.

Also, a batch job automatic starting means for automatically starting a batch processing AP according to a job sequence of a job schedule file, and an online transaction processing system is changed from an active system to a standby system by an operator command input from a terminal. In a computer system having an online processing hot standby unit that automatically takes over, an online transaction processing system / batch processing system (hereinafter abbreviated as “logical system”) switching command from an operation terminal is used as an opportunity.
Preparation before logical system switching for issuing an end request to the batch job automatic starting means, an offline request for the library cartridge MT device used by the batch processing AP to the drive managing means, and a switching request to the online processing hot standby means Means, batch processing AP forced termination means for forcibly terminating the batch processing AP being executed when the logical system switching command is input, and library cartridge MT apparatus by specifying the logical system name based on the drive management file when the command is input. , An online system switching detecting unit that monitors switching of the online transaction processing system, and notifies the drive managing unit and the batch processing AP takeover unit. Taking the offline processing and synchronization, batch processing A to carry out and drive management means for online the appropriate equipment at the switching destination, based on the job schedule file, the takeover of the forced end batch processing AP
P takeover means.

[0008]

According to the present invention, the logical system of the hot standby configuration for the purpose of 24-hour operation is automatically switched to the standby host computer upon the input of an operator command, thereby distributing the load of the CPU and the hardware. When performing hardware maintenance, the logical system can be switched systematically without making the operator aware of the stoppage of the online transaction processing system.

[0009] That is, without stopping the OS, in conjunction with the system switching of online transaction processing system, restart batching AP associated with the online processing, and Technology of write of MT device such as a logic system uses <br By automating the operation of the online transaction processing system, it is possible to change the operation mode of the logical system and perform hardware maintenance during the 24-hour operation of the online transaction processing system.

[0010] In addition, in one command, the batch processing AP is re-processed and the library cartridge MT device used by the batch processing AP is switched in conjunction with system switching of the online transaction processing system without stopping the OS. It can be performed in a short time regardless of the skill level.

[Embodiment] FIG. 1 is a schematic structural view showing an embodiment of the present invention. The outline of the configuration and operation will be described below.

The logical system switching preparatory means 21 comprises:
Triggered by the logic system switching command from the operation control terminal 1, termination request for a batch job automatic activation means 22, and logic system uses the drive management unit 25 library cartridge MT device 4 or the like off of <br A line switching preparation request is issued to the online processing hot standby unit 26 for performing line switching and online processing.

The batch job automatic starting means 22 and 32
The batch job is automatically started according to the job sequence of the job schedule file 6.

The batch job automatic start-up means 22 receives the end request from the logical system pre-change preparation means 21 and notifies the batch process AP forced end procedure 23 of the job information of the batch processing AP 24 being executed at the time of the end request.

The batch processing AP forced termination means 23 forcibly terminates the batch processing AP 24 and writes the information of the forced termination into the job schedule file 6.

The drive management means 25 receives an offline request of the library cartridge MT device 4 by designating a logical system name from the logical system pre-change preparation means 21,
Drive information used by the logical system is input from the drive management file 5, and the corresponding library cartridge MT is input.
Performing offline processing such apparatus 4.

Online processing hot standby means 26
Receives a request for system switching of online processing from the logical system pre-preparation means 21 and performs system switching processing in cooperation with the online processing hot standby means 36 of the standby host computer.

The online system switching detecting means 31 monitors the completion of system switching of the online processing hot standby means 36 of the standby host computer, detects a switching completion message from the online processing hot standby means 36, and sends the message to the drive management means 35. The online request of the library cartridge MT device 4 used by the logical system and the start of the batch processing AP takeover means 33 for performing the takeover processing of the batch processing AP 24 that was started at the time of inputting the logical system switching command are performed.

The drive management unit 35 receives an online request for the library cartridge MT device 4 by designating the logical system name from the online system switching detection unit 31, inputs drive information used by the logical system from the drive management file 5, and The online processing of the cartridge MT device 4 is performed.

The batch processing AP takeover means 33 is activated by the online system changeover detection means 31, inputs the information of the batch processing AP 24 forcibly terminated by the batch processing AP forced termination means 23 from the job schedule file 6, and outputs the batch job automatic data. Batch processing A in the starting means 32
A request for starting P24 is made.

The batch job automatic starting means 32 starts a batch process AP 34 which is the same job as the batch process AP 24.

[0022]

Embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a block diagram showing a configuration of a planned logical system switching system without interruption of an online transaction processing system according to an embodiment of the present invention.

Referring to FIG. 1, one embodiment of the present invention is:
An operation terminal 1, a logical system pre-switching preparation unit 21 for performing a logical system switching preparation process in response to a logical system switching command, and a batch job automatic starting unit for starting a job according to the job sequence of the job schedule file 6 22, 32, batch processing AP forced termination means 23 for forcibly terminating the batch processing AP 24 being executed when the logical system switching command is input, and library cartridge MT by logical system name designation based on drive management file 5. Drive management means 25, 35 for performing offline / online of the device 4
And online processing hot standby means 26 and 36 for automatically taking over the online transaction processing system from the active system to the standby system in response to a command, and monitoring the switching of the online transaction processing system.
Online system switchover detection unit 31 that notifies drive management unit 35 and batch processing AP takeover unit 33
And a batch process AP takeover unit 33 that takes over the batch process AP 24 that has been forcibly terminated based on the job schedule file 6.

Next, the operation of the planned logical system switching method without stopping the online transaction processing system according to the present embodiment configured as described above will be described.

When the logical system switching command from the operation terminal 1 is triggered, the logical system pre-switching preparation means 21 requests the batch job automatic activation means 22 to terminate and the drive management means 25 use the logical system. An off-line request of the library cartridge MT device 4 and a system switching preparation request are issued to the on-line processing hot standby unit 26.

The batch job automatic start-up means 22 having received the end request from the logical system pre-switching preparation means 21 notifies the batch process AP forced end means 23 of the job information of the batch processing AP 24 being executed at the time of the end request. The batch processing AP forced termination unit 23 performs forced termination of the batch processing AP 24 and writes information of the forced termination into the job schedule file 6.

Upon receiving the offline request for the library cartridge MT device 4 by designating the logical system name from the logical system switching preparatory means 21, the drive managing means 25
Drive information used by the logical system is input from the drive management file 5, and the corresponding library cartridge MT is input.
Offline processing of the device 4 is performed.

The online processing hot standby unit 26 that has received the online system switching request from the logical system switching preparatory unit 21 performs the system switching process in cooperation with the online processing hot standby unit 36 of the standby host computer. .

The online system changeover detecting means 31, which monitors the completion of system changeover of the online processing hot standby means 36 of the standby host computer, detects a switching completion message from the online processing hot standby means 36 and drives the drive management means 35. Then, an online request for the library cartridge MT device 4 used by the logical system and a batch process AP takeover means 33 for taking over the batch process AP 24 that was running at the time of inputting the logical system switching command are started.

The library system MT device 4 is designated by the logical system name designation from the online system switchover detecting means 31.
The drive management means 35 receiving the online request receives the drive information used by the logical system from the drive management file 5 and performs online processing of the corresponding library cartridge MT device 4.

The batch processing AP takeover means 33 started by the online system switchover detection means 31 inputs the information of the batch processing AP 24 forcibly terminated by the batch processing AP forced termination means 23 from the batch schedule file 6 and automatically executes the batch job AP. Batch processing A in the starting means 32
A request for starting P24 is made. Batch job automatic starter 3
2 starts a batch process AP34 which is the same job as the batch process AP24.

[0033]

According to the present invention, the OS can be controlled by one command.
Without stopping the system, the batch processing AP is reprocessed and the library cartridge MT device used by the batch processing AP is switched in conjunction with the system switching of the online transaction processing system. Can be easily implemented.

[Brief description of the drawings]

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

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Operation terminal 21 Logical system switching preparation means 22, 32 Batch job automatic start means 23 Batch processing AP forced termination means 24, 34 Batch processing AP 25, 35 Drive management means 26, 36 Online processing hot standby means 4 Library cartridge MT device 5 Drive management file 6 Job schedule file

Claims (2)

(57) [Claims] 1. A batch job automatic starting means for automatically starting a batch processing AP in accordance with a job sequence of a job schedule file, and an online transaction processing system waiting from an operating system in response to a logical system switching command input from a terminal. And a online processing hot standby unit automatically taken over by the system. The batch job automatic starting unit triggered by a command for switching between an online transaction processing system / batch processing system as a logical system from an operation terminal. An end request, and an offline request to the drive management means for the device used by the batch processing AP ,
And a logical system pre-switching preparation unit that issues a switching request to the online processing hot standby unit; and a batch process A for forcibly terminating the running batch process AP when the switching command of the logical system is input.
P forced termination means, and when the above command is input, based on the drive management file,
A device used by the batch processing AP by specifying a logical system name
A drive management unit for taking the device offline, an online system switchover detection unit for monitoring the switching of the online transaction processing system and notifying the drive management unit and the batch processing AP takeover unit, and the batch processing AP. A drive management unit for bringing the corresponding device online at the switching destination in synchronization with the offline process of the device ; and a batch process A for taking over the forcibly terminated batch process AP based on the job schedule file.
A logical system switching method, comprising: P takeover means. 2. An apparatus used by the batch processing AP,
A library cartridge MT device.
2. The logical system switching method according to claim 1, wherein: