KR20010045732A - Apparatus for processing data base file backup in an exchange - Google Patents

Abstract

PURPOSE: An apparatus for processing the backup of a database file in an exchange is provided to make special services, associated with call control, registered in a database during system backup and to make a backup log baked up in a PLD(Processor Loaded Data) file if system backup is completed. CONSTITUTION: A PLD file backup processing apparatus in an exchange is comprised of an operator terminal(100), a CCP(Central Control Processor)(200), a disk PLD(300), an MP(Main Processor)(400). The operator terminal(100) transports a command equivalent to a system backup request to the CCP(200). The CCP(200), controlling the functions associated operation and maintenance in an exchange system, is provided with an SL(System Loader) processor(220), a DBBG(DataBase Backup Group)(240), a DBSG(DataBase Support Group)(260), and a PLD(280). The SL processor(220) executes a control function so that the disk PLD(300) can be backed up to another storage medium. The DBBG(240) provides a delay backup request transferred from the SL processor(220) to the DBSG(260) and stores a backup log provided from the DBSG(260). The DBSG(260), containing a producer processor(261), a local log buffer(263), and a consumer processor(265), provides the backup log to the DBBG(240) according to the delay backup request from the DBBG(240) and supplies a corresponding delay backup release result message to the DBBG(240). The MP(400), comprised of a PLD(480) and a DBSG(460), transfers a backup log and a delay backup result message to the DBBG(240) through an IPC path(500) according to the delay backup request and the delay backup release provided from the DBBG(240).

Description

Database file backup processing unit at an exchange {APPARATUS FOR PROCESSING DATA BASE FILE BACKUP IN AN EXCHANGE}

The present invention relates to a system backup of an exchange, and in particular, during a system backup, a special service by a telephone subscriber is registered in a database (for example, processor loaded data (hereinafter abbreviated as PLD)). The present invention relates to a device capable of backing up a backup log to a database (eg, PLD) file after a system backup is completed.

Typically, the exchange updates the telephone subscriber's call control related special services to a database (e.g., PLD) file and periodically performs a system backup on the updated PLD file. Such a backup (backup) is a task that is prepared to recover the hardware devices and files or database contents at any time in preparation for various failures occurring during the operation of the system, and is periodically performed for the maintenance of the exchange. The target of such a backup is a backup PLD file that stores the main data of the exchange, that is, the backup relation that occurs at the exchange.

However, during a system backup, updates to backup relations are prohibited even if updates to newly created data for the PLD file are required. This caused the call subscriber-related special services to fail to renew their registration to the PLD.

Accordingly, the present invention has been made to solve the above-described problems, the object of which is to ensure that the call control-related special service by the telephone subscriber is registered in the database (eg, PLD) even during the system backup, and after the system backup is completed It is to provide a PLD file backup processing unit of an exchange to backup the backup log to the PLD file.

In the present invention for achieving this object, a database (eg, PLD) file backup processing apparatus of an exchange includes an operator terminal for transmitting a system backup command; A system loader (SL) process requesting a delayed backup corresponding to the system backup command; A database backup group (DBBG) for transmitting the delayed backup request through an interprocessor communication path, and receiving a backup log corresponding to the request and backing up the disk program load data; And a database support group (DBSG) for transmitting a backup log generated by an application program to the database backup group through the interprocessor communication path according to a delayed backup request transmitted from the database backup group.

1 is a block diagram of a database file backup processing apparatus of an exchange according to the present invention;

2 is a detailed flowchart of a database file backup processing apparatus of an exchange according to the present invention.

<Explanation of symbols for main parts of drawing>

100: operator terminal 200: CCP

220: SL process 240: DBBG

260, 460: DBSG 280, 480: PLD

300: Disc PL 400: MP

500: interprocessor communication path (IPC path)

Hereinafter, with reference to the accompanying drawings will be described in detail the configuration and operation of the present invention.

1 is a block diagram of a file backup processing apparatus of a processor database (for example, processor loaded data (hereinafter referred to as PLD)) of an exchange according to the present invention. A control processor (hereinafter referred to as CCP) 200, a disk PLD 300, and a main processor (hereinafter referred to as MP) 400 are included.

The operator terminal 100 is a terminal operated by the operator and transmits a command corresponding to a system backup request to the CCP 200.

The CCP 200 is a processor that manages operations and maintenance-related functions in the exchange system. The CCP 200 includes a system loader process 220 and a database backup group DBBG. 240, a Database Support Group (hereinafter referred to as DBSG) 260, and a PLD 280.

The SL process 220 is a block for controlling the disk PLD 300 to be backed up to another storage medium (not shown). After receiving the command corresponding to the system backup request from the operator terminal 100, the DBBG 240 When the delay backup process is successful in the DBBG 240, the disk PLD 300 performs a backup function to another storage medium (not shown). When the system backup is complete, the SL process 220 requests the DBBG 240 to release the delayed backup.

The DBBG 240 provides a delay backup request from the SL process 220 to the DBSGs 260 and 460, stores a backup log provided from the DBSGs 260 and 460, and performs the SL process 220. A block for transmitting the delayed backup release provided from the DBSGs 260 and 460 and the delayed backup release result message provided from the DBSGs 240 and 460 to the SL process 220. a producer process 241, a spool log buffer 243, and a consumer process 245.

The DBBG 240 forwards the delay backup request of the SL process 220 directly to the DBSG 260 and forwards it to the DBSG 460 via an Inter Processor Communication (IPC) path 500. The backup log provided from the DBSGs 260 and 460 is stored in the spool log buffer 243 according to the delayed backup request. The consumer process 245 reads the backup log present in the spool log buffer 243 and backs it up to the disk PLD 300, and when the spool log buffer 243 is completely empty, the SL through the producer process 241. Process 220 is notified that the delayed backup process was successful.

The DBSG 260 provides the backup log to the DBBG 240 according to the delayed backup request from the DBBG 240, and sends the delayed backup release result message corresponding to the delayed backup release request from the DBBG 240 to the DBBG 240. As a block to be provided, a producer process 261, a local log buffer 263, and a consumer process 265 are provided.

The producer process 261 stores the backup log generated by the application in the local log buffer 263 according to the delayed backup request received from the DBBG 240. The consumer process 265 reads the backup log stored in the local log buffer 463 and sends it to the producer process 241. In this regard, DBSG 460 in MP 400 is the same as the description for DBSG 260 in CCP 200. The backup log generated only in the DBSG 460 is transmitted to the DBBG 240 via the IPC path 500.

The MP 400 transmits the backup log and the delayed backup result message corresponding to the delayed backup request and the delayed backup release provided from the DBBG 240 through the IPC path 500 to the DBBG 240. PLD 480 and DBSG 460 are provided. In this regard, since the configuration and operation of the PLD 480 and the DBSG 460 are identical to those of the PLD 280 and the DBSG 260 in the CCP 200, detailed description thereof will be omitted.

With reference to the flowchart of FIG. 2, the processor loading data file backup processing apparatus of the exchanger which has the above-mentioned structure is demonstrated in detail. In the following description, DBSG 260 and database (e.g., PLD) 280 perform the same operations as DBSG 460 and PLD 480 of MP 400, and therefore DBBG 240 of CCP 200. Only the PLD backup processing performed between the MP 400 and the MP 400 will be described.

First, the operator uses the operator terminal 100 to send a command corresponding to the system backup request to the SL process 220 (step 201).

In response to the system backup request command sent from the operator terminal 100, the SL process 100 registers a delayed backup to DBBG 240 to register (update) the special service generated by the telephone subscriber with the PLDs 280 and 480. Upon request, DBBG 240 sends a delayed backup request to DBSG 260 and a delayed backup request to DBSG 460 via IPC path 500 (step 202).

The producer process 461 in the DBSG 460 turns on the DBSG producer flag according to a delayed backup request received from the DBBG 240 and then calls the application (eg, in the MP 400). Store the backup log generated by the / data processing block (program not shown) in the local log buffer 463 (step 203). Here, the backup log is a detailed record of the processing contents and usage of the application program over time.

DBSG 460 then operates the consumer process 465 by turning on the DBSG consumer flag. At this time, the consumer process 465 reads the backup log present in the local log buffer 463 and transmits it to the producer process 241 in the DBBG 240 through the IPC path 500 and then turns off the DBSG consumer flag. (OFF) (step 204).

Subsequently, the DBBG 240 receiving the backup log turns on the DBBG producer flag so that the producer process 241 stores the backup log received from the consumer process 465 in the spool log buffer 243. (Step 205).

DBSG 460 then enables the consumer process 245 by turning on the DBSG consumer flag. The enabled consumer process 245 reads the backup log present in the spool log buffer 243 and backs it up to the disk PLD 300. In addition, the consumer process 245 informs the SL process 220 that the delay backup process succeeded when the spool log buffer 243 is completely empty (step 206).

The SL process 220 prevents the DBBG 240 from backing up to the disk PLD 300 when the disk PLD 300 is backed up to another storage medium according to the delayed backup processing success message received from the producer process 241. (Step 207).

When the system backup is completed by the SL process 220, the SL process 220 requests the DBBG 240 to release the delayed backup (step 208). The DBBG 240 sends a delay backup release request from the SL process 220 to the DBSG 460 via the IPC path 500 according to the delay backup release request. Thereafter, the DBSG 460 receives the delay backup release request from the DBBG 240, turns on the DBSG consumer flag, and releases the result message indicating that the delay backup is released through the IPC path 500 through the DBBG 240. (Step 209).

The DBBG 240 sends a result message indicating that the delay backup received from the DBSG 460 has been released to the SL process 220, and the SL process 220 sends the result of the system backup release to the operator terminal 100. (Step 210).

As described above, the present invention processes the special service registration for the telephone subscriber even during the system backup, and backs up the backup log to a database (for example, PLD) file after the system backup is completed, thereby restoring the system backup data. It is effective to maintain consistency and to continuously provide special services by telephone subscribers.

Claims (3)

A system backup device of an exchange having a database, An operator terminal for sending a system backup command; A system loader (SL) process requesting a delayed backup corresponding to the system backup command; A database backup group (DBBG) for transmitting the delayed backup request through an interprocessor communication path, and receiving a backup log corresponding to the request and backing up the disk program load data; And a database support group (DBSG) for transmitting a backup log generated by an application to the database backup group through the interprocessor communication path according to a delayed backup request transmitted from the database backup group. Database file backup processing unit. The method of claim 1, wherein the database support group, A local log buffer; A first producer process for storing the backup log in the local log buffer; And a first consumer process that reads the backup log stored in the local log buffer and transmits the backup log to the database backup group. The method of claim 1, wherein the database backup group, A spool log buffer; A second producer process for storing a backup log received from the first consumer process in the spool log buffer; And a second consumer process that reads the backup log stored in the spool log buffer and backs up to the disk program load data.