Background documentationdb_activate RECOVER Locate this document in the navigation structure


Use this command to initialize the data and log volumes of the current database, and import the data backed up in a complete data backup into the database. All the data previously contained in the current database is overwritten.

This command is also used to create a copy of a database, such as is required for the creation of a standby database.

Unlike the DBM command for recovering the database (see: recover_start) the db_activate RECOVER command deletes all catalog information and application data, as well as all entries in the log area of the database. The complete data backup is then imported and the database state it contains is recreated.

When you import the backup, all the original database user data of the target database are overwritten with the data of the source database. This is particularly significant if the source database from which the backup was created is different from the target database into which the backup is imported. To continue working with the target database, and in particular to load the system tables after importing the backup, you require the user data of the database system administrator of the source database. Only with this user data can you completely restore the data in the target database.

The DBM operator data of the target database is retained.

If you used another provider’s backup tool to carry out the backups which are to be imported, use that tool to recover the database with initialization.

Once db_activate RECOVER has been executed, information on the recovery is displayed. This only happens when the backup has been completely imported or the process was interrupted. For this reason, the response to this DBM command can take a long time.

Note Note

If the automatic log backup function was active before the recovery was started, it is not re-activated automatically after the recovery. To re-activate the automatic log backup function, execute the DBM command autolog_on.

End of the note.


  • You have the server permission Recovery.

  • The database is in the ADMIN operational state.

  • You have opened a database session (see: db_connect).


db_activate RECOVER <medium_name> DATA [ExternalBackupID <external_backup_ID>] [AUTOIGNORE]





Name of the backup template, which refers to the data carrier or the group of parallel data carriers the backup is to be imported from.


Type of backup to be imported is DATA (complete data backup)

You only need to specify an entry here if you want to import a data backup in whose backup template the backup type was not specified.

ExternalBackupID <external_backup_ID>

To restore a backup created with a backup tool, enter the backup ID name known to this tool.


If you specify this option, the system automatically continues the operation for restoring multiple parallel data carriers when it has finished importing the data from one of these data carriers.





Values for the Reply Fields






Start time of the backup


Name of the database computer


Name of the database

Kernel Version

Version of the database kernel

Pages Transferred

Number of pages transferred

Pages Left

Number of pages still to be transferred


Number of data carriers used


Name of the backup template


File or device name


Error message text

See also:

Messages documentation


Backup ID

Is Consistent

Only for data backup: Backup is internally consistent

First LOG Page

For data backup: First page of the log backup to be read

For log backup: First page saved in the log area

Last LOG Page

For log backup only: Last page saved in the log area

DB Stamp 1 Date DB Stamp 1 Time

Time stamp for the first page of the log backup

DB Stamp 2 Date DB Stamp 2 Time

Time stamp for the last page of the log backup

Page Count

Total number of pages backed up

Devices Used

Number of backup devices used

Database ID

Database ID used to identify data and log backups that belong together

Reply in the Event of an Error

If an error occurs while you are using a backup tool, you will receive a reply in the following format:

ERR<NL> <errcode>, <err_description><NL> [<extended_description><NL>]

Reply in the Event of an Error




Error Message Number

See: Messages documentation


Description of the error


Cause of error

The following errors may occur:


Error Message Number

Error message text



ERR_TOOLCHK: the external backup tool was not found

The backup tool could not be found or has been installed incorrectly.


ERR_MEDIUMCHK: the medium cannot be used with this external backup tool

The backup template specified cannot be used with this backup tool.


ERR_PREPARE: prepare of the backup operation failed

The preparations required to use the backup tool could not be completed correctly.


ERR_DBREQ: cannot start database kernel request

The database was unable to start the backup.


ERR_TOOLREQ: cannot start external backup tool correctly

The backup tool could not be started correctly.


ERR_OPCHK: cannot check state of backup operation

Unable to check the status of the database or the backup tool.


ERR_POSTOP: cannot finish backup operation correctly

Although the backup was successful, the required post-processing steps could not be performed.


ERR_BACKUPOP: backup operation was unsuccessful

The backup failed due to a problem with the database or with the backup tool.


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.

More Information

Database Administration,