Checking Backups

You are checking whether the system can access the backup and read the data.

You are logged on to the database as the database system administrator or as a DBM operator with server authorization for performing backups.

More information: Glossary, Server Permission

Select the database in the explorer tree.
In the context menu of the database, choose Administration Tasks Check Backup...
Select which backup you want to check:
- Check last backup
- Check specified backup from history
  Choose a backup from the backup history.
- Check a medium
  Choose a data carrier from the list of available data carriers.
Start the check.

If the check discovers an error, an error message is displayed. The most common error messages are listed in the following table.

Messages
Error Message Number	Error message text	Explanation
`-24927`	`ERR_TOOLCHK: the external backup tool was not found`	The backup tool could not be found or has been installed incorrectly.
`-24926`	`ERR_MEDIUMCHK: the medium cannot be used with this external backup tool`	The backup template specified cannot be used with this backup tool.
`-24925`	`ERR_PREPARE: prepare of the backup operation failed`	The preparations required to use the backup tool could not be completed correctly.
`-24924`	`ERR_DBREQ: cannot start database kernel request`	The database was unable to start the backup.
`-24923`	`ERR_TOOLREQ: cannot start external backup tool correctly`	The backup tool could not be started correctly.
`-24922`	`ERR_OPCHK: cannot check state of backup operation`	Unable to check the status of the database or the backup tool.
`-24921`	`ERR_POSTOP: cannot finish backup operation correctly`	Although the backup was successful, the required post-processing steps could not be performed.
`-24920`	`ERR_BACKUPOP: backup operation was unsuccessful`	The backup failed due to a problem with the database or with the backup tool.
`-24919`	`ERR_CLEANUP: cannot clean up correctly after backup operation`	Although the backup was successful, the system resources used during the check could not be released.

Messages (Explanation of error messages, sorted by message number)