Database Corruption Causes Backup Failure in DB2 Database

Database Corruption Causes Backup Failure in DB2 Database

Backup is the best way to safeguard against data loss in any system. You can easily restore your significant data from backup when you run across any data loss situation. Sometimes you may encounter errors while creating backup of DB2 database. Similarly you may also encounter an error while restoring data from backup. If restoration cannot be done successfully, DB2 database recovery software become need of hour.

The backup process usually fails if the database is severely damaged and the restore process fails if the backup file is damaged. Both database and backup file may get damaged due to numerous reasons, such as virus infection, improper system shutdown, application malfunction, and operating system crash.

For a real-time instance of this problem, you might come across the below error message when you run a command to create backup of the DB2 database:

"SQL0980C A disk error occurred. Subsequent SQL statements cannot be processed."

The above error occurs when almost half backup completes. Backup process stops with the above error message and you cannot make full backup of the database. Furthermore, the DB2 database cannot be mounted after this error and stored data becomes inaccessible. The following entries are shown in the error log at the same time-

"MESSAGE : ADM6023I The table space "SYSTOOLSTMP" (ID "28") is in state

0x"0". The table space cannot be accessed. Refer to the documentation for SQLCODE -290. "

Root of the issue

As stated above, the problem occurs due to corruption to the DB2 database. DB2 application cannot recognize the database after corruption and thus you cannot perform any operation on it.

Solution

Follow the below given steps to recover DB2 database in such situations:

Restore database using backup if you have another copy in place.

In case substitute backup is not updated, then you should not opt for this DB2 recovery method. It will not restore all the data and you may miss some significant information. You can consider this option only if you did not make any significant changes to the database after last backup.

If none of the above methods are suitable for you, then you can recover DB2 database using DB2 repair software. DB2 database recoveryapplications are very effective in all corruption scenarios to ensure absolute DB2 recovery.

Stellar Phoenix DB2 Recoveryis the most efficient DB2 repair software to repair and restore corrupt DB2 database in all corruption scenarios.

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