JPH07306829A - Data update system between on-line system - Google Patents

Abstract

PURPOSE:To easily restore data after a recovery from abnormality while suppressing an increase in traffic for securing the consistency of the data at abnormality occurrence time between systems which individually manage full-set information and subset information on the data. CONSTITUTION:The program group 11 of a full-set information management system 10 sends after-update information to a subset information management system 15 when a full-set information file 12 is updated. The program group 16 of a subset information management system 15 updates a subset information file 17 with the after-update information. If abnormality which does not temporary occur during the update processing, the after-update information is stored in an unprocessed after-update information file 18 through an unprocessed after- update information management table 19. After the recovery from the abnormality, the restoration of data is indicated from a terminal 19A and then the subset information file 17 is updated on the basis of the information stored in the unprocessed after-update information file 18.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for updating data between online systems, and more particularly, when data that is duplicated between systems is managed and the data in one system is updated,
The present invention relates to a system in which the data of the other system needs to be updated to synchronize the data between the systems.

[0002]

2. Description of the Related Art When managing full set information and subset information of customer data by different systems,
When the full set information is updated to maintain data integrity, the subset information also needs to be updated.

Conventionally, when the full set information is updated, the full set information management system transmits the updated information to the subset information management system, updates the corresponding information within a fixed time, and responds with the result. . In the case where there is no response or an abnormal response occurs during the information processing after updating in the subset information management system, the updated information is retransmitted after a certain period of time. Further, when the update result is not normal while the retransmission is repeated the specified number of times, the post-update information is output to the list and discarded.

Patents relating to this type of system are disclosed in Japanese Patent Laid-Open Nos. 5-204738 and 58-1630.
No. 52, No. 61-201351 and the like.

[0005]

The above-mentioned prior art does not take into consideration the fact that the subset information management system cannot cope with an abnormality within a certain time, and the full-set information management system can retransmit the updated information. Due to the increase in traffic and when the updated information is discarded, the system operator manually operates the subset information management system.
There was a problem that the relevant information had to be restored.

An object of the present invention is to prevent an increase in traffic due to re-transmission of information after updating when a non-temporary abnormality such as a hardware failure or a software defect occurs, and to easily recover information when an update abnormality is encountered. It will be realized.

[0007]

[Means for Solving the Problems] The above object is to normally respond to the full set information management system when a non-temporary abnormality such as a hardware failure or software defect occurs during information processing after updating in the subset information management system. And providing an unprocessed updated information file such as a magnetic disk for storing the updated information in the subset information management system.

[0008]

When the full set information and the subset information are managed by different systems, data synchronization is performed by transmitting the updated information when the full set information is updated to the subset information management system. The subset information management system updates the subset information with the updated information. If the update is normal, the normal response is sent to the full set information management system. If the update is abnormal,
If the cause of the abnormality is a temporary one such as resource competition and normal processing can be expected by retrying, an abnormal response is given, and reprocessing is performed when the updated information is retransmitted from the full set information management system. If the cause of the abnormality is not a temporary one such as a hardware failure or software defect, the updated information is stored in the unprocessed updated information file via the unprocessed updated information management table. After taking measures against the cause of the error, by instructing the terminal to process the unprocessed updated information, the updated information is acquired from the unprocessed updated information file via the unprocessed updated information management table, and processed to obtain the subset information. To synchronize data between systems.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a structural example of an online system according to the present invention. The full-set information management system 10 provides various services with basic information such as customer's address, name, date of birth, contract details, and additional information such as owned equipment. Program group 11 for information transmission after maintenance and update, full set information file 1 for providing core services
2. A post-update information file 13 for temporarily storing post-update information after transmission, and a terminal 14 for performing data search and update. In addition, a subset information management system 15 that provides various services by subset information obtained by adding new additional information not included in the full set information to basic information in the full set information or specific information in the additional information
Is a group of programs 16 such as service-corresponding operations and maintenance of subset information and management of unprocessed post-update information, a subset information file 17 for providing basic services, and post-update information when encountering an abnormality in which it is difficult to update the subset information. It is composed of an unprocessed post-update information file 18 for management, an unprocessed post-update information management table 19, and a terminal 19A for performing data search and update. The full set information management system 11 and the subset information management system 15
Are connected by a communication line such as a public line or a private line.

FIG. 2 shows an example of management information of unprocessed updated information, which is composed of an unprocessed updated information management table 19 and an unprocessed updated information file 18. The unprocessed post-update information management table 19 is composed of processing waiting information 20 and processed information 23. Both pieces of information are information for managing the block information of the unprocessed updated information file 18. The pending information is information that performs queue management of the post-update information in order of reception in order to process the post-update information that has not been processed in a time series without data inconsistency, and the top block number that stores the post-update information that has not been processed. 21 and the final block number 22 are managed. The processed information 23 manages a free block number in which unprocessed post-update information is not stored and a free block number after the update process is completed. Since the empty blocks do not need to be managed in time series, only the leading block number 24 is managed. The unprocessed post-update information file 18 includes a next block number 25 for realizing a process waiting / processed queue, key information 26 for uniquely identifying the subset information, and post-update information 27 which is update substance data. The next block number 25 is, for example, the block number of the corresponding block when the next block of the queue exists, and "-1" when the next block does not exist.

FIG. 3 is a flow chart showing a processing example of data update between the systems of the present invention. In response to an update request from the terminal 14 of the full set information management system 10, the full set information file 12 is updated, the updated information is stored in the updated information file 13, and the updated information is transmitted to the subset information management system 15. Upon receiving the updated information, the subset information management system 15 updates the information in the subset information file 17 corresponding to the updated information. When the subset information file 17 is updated normally, a normal response is sent to the full set information management system 10. If an abnormality that cannot continue processing occurs temporarily due to resource competition or the like during updating of the subset information file 17, an abnormality response is sent to the full set information management system 10. When a non-temporary abnormality such as a hardware failure or a software failure occurs, the updated information is stored. The storage is performed by paying out an empty block of the unprocessed updated information file 18 from the processed queue and queuing it into the processing waiting queue. The empty block is paid out by reading the block pointed by the first block number 24 in the processed information 23 in the unprocessed updated information management table 19 from the unprocessed updated information file 18 and reading the block in the current block that is the read block. This is done by setting the value of the next block number 25 to the leading block number 24. "-1" is set in the next block number 25 in the current block, information is set in the key information 26 and the updated information 27 from the received updated information, and the current block is written in the unprocessed updated information file 18. The queue-in to the processing waiting queue is performed by reading the block pointed to by the final block number 22 in the processing waiting information 20 in the unprocessed updated information management table 19 from the unprocessed updated information file 18 and reading it as the final block number 22. The block number of the released empty block is set to the next block number 25 in the current block, and the current block is updated to the unprocessed information file 18
It writes by writing in. After that, an error message is output to the terminal 19A and a normal response is made to the full set information management system 10. In the full set information management system 10, when a normal response is received, the corresponding information is deleted from the updated information file 13. When an abnormal response is received, the information is read from the updated information file 13 after a certain period of time, and the information is transmitted again to the subset information management system 15. When the normal response is not made even after the transmission is performed the specified number of times, the updated information is output to the terminal 14 and the corresponding information is deleted from the updated information file 13. After that, after the subset information management system 15 completes the handling of the non-temporary abnormality, the key of the unprocessed updated information to be processed is designated from the terminal 19A to reprocess the corresponding updated information.
The reprocessing is performed by reading the block in which the updated information is stored from the processing queue and reading it into the processed queue after the update processing. To read the post-update information, the block pointed to by the first block number 21 in the processing wait information 20 in the unprocessed post-update information management table 19 is read from the unprocessed post-update information file 18. If there is no read data, a result response is sent to the terminal 19A.
If the read data exists, it is determined from the key information 26 in the read current block whether the data is the process target data. In order to check the next block if it is not the processing target, the block indicated by the next block number 25 in the current block is read from the unprocessed updated information file 18, and the check whether it is the processing target or not is continued. If it is a processing target, the subset information file 17 is updated with the updated information 27. After the update is completed, the current block is changed from the processing queue to the processed queue. When the current block is directly pointed by the starting block number 21 or the ending block number 22, the cue-out from the processing waiting queue updates the starting block number 21 or the ending block number 22 with the next block number 25 in the current block. To do. If the current block is not directly pointed to by the first block number 21 or the last block number 22, the next block number 25 in the current block is set to the next block number 25 in the block read immediately before the current block. . Queue-in to the processed queue is performed by adding the next block number 25 in the current block to the first block number 24 in the processed information 23,
The current block number is set in the top block number 24. After that, the current block is written in the unprocessed post-update information file 18. Data consistency between systems is maintained by repeating the reprocessing of updated information until the end of the processing queue. According to this embodiment, the post-update information in which the update is abnormal can be held in the own system, so that the data recovery work at the time of abnormality can be easily performed.

[0013]

According to the present invention, when the data update request message from the full set information management system cannot be normally processed within a certain time in the subset information management system due to some abnormality, the data update request message is processed. By storing and reprocessing the data, the data in the subset information management system can be updated to the latest state without depending on the handling of update request messages in the full set information management system and the service operation time. Can be increased. In addition, there is no need to retransmit a data update request message for synchronizing data, and there is an effect of suppressing an increase in traffic between systems due to the maintenance of data.

[Brief description of drawings]

FIG. 1 is a diagram showing an example of an online system configuration according to the present invention.

FIG. 2 is a diagram illustrating an example of management information of unprocessed updated information.

FIG. 3 is a flow chart of processing of an embodiment of data update between systems of the present invention.

[Explanation of symbols]

 10 ... Full-set information management system, 11 ... Full-set information management system program group, 12 ... Full-set information file, 13 ... Updated information file, 14 ... Full-set information management system terminal, 15 ... Subset information management system, 16 ... Subset information management system program group, 17 ... Subset information file, 18 ... Unprocessed updated information file, 19 ... Unprocessed updated information management table, 19A ... Subset information management system terminal, 20 ... Waiting information, 21 ... Leading block number, 22 ... Final block number, 23 ... Processed information, 24 ... Leading block number, 25 ... Next block number, 26 ... Key information, 27 ... Updated information.

Claims (1)

[Claims] 1. A full-set information is updated from a full-set information management system by connecting systems providing different services with a communication line such as a public line or a dedicated line by the full-set information and subset information about customer data. In the system that receives the updated information and maintains the subset information when a non-temporary abnormality occurs during the updated information processing, a storage unit that stores the updated information in its own system is provided, An online data update method for synchronizing data between systems by reading and reprocessing post-update information in the storage means after recovery from an abnormality. The full set information refers to all the information (customer information, equipment information, etc.) necessary for the online system service, and the subset information refers to information that is partially lacking.