| 摘要 |
PURPOSE: A method for diagnosing a database of a DBMS(Database Management System) is provided to prevent a fatal error in an operation of a switchboard by diagnosing the disorder of a disk, reporting the particulars of an error, and restoring the database of the disk. CONSTITUTION: The performance of a diagnostic function for the database is decided(S10). If the time to diagnose the database arrives or a command for performing the diagnostic function is inputted, one database file for performing the diagnostic function is opened from the disk of a master processor(S12). The master processor requests a processor having the database the same as the opened database to perform the diagnosis(S14). If the checksum calculated by the processor is different from the checksum calculated by the master processor, a request for the restoration is transmitted to the corresponding processor(S24). The master processor receiving the details of a backup relation from the corresponding processor restores the data by recording the details of the backup relation in the corresponding database(S28).
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