Start orarecut | 3Com NSR-ORA V3.2 specs

Recovery

Performing a recovery

5.2.1Automatic Recovery for an Optional Point in Time

This section documents the use of the ora_recut command with the aid of which you can automatically recover a specific database level (recovery until time).

In order to recover a specific database level you can use the following command:

ora_recut [<ORA-SID>][-t <time>] [-v]

The ORACLE ID <ORA-SID> only needs to be specified if there is more than one database. If the -t option is used to define a point in time (format yyyy-mm- dd:hh:mm:ss,i.e., for instance: 1997-11-27:22:00:00) the ora_recut command will attempt to roll back the database to precisely that moment. If you do not enter a time here, then ora_recut will prompt you for a time presently. The -v option enables the output of additional information.

The following prerequisites must be met so that ora_recut can be used:

●The database must be physically sound (operable) because ora_recut needs to query the position of the control files.

●All the servers and device servers used for the backups have to be active.

●The last full recovery made before the required point in time using

${ORACLE_SID}_full_save has to have run under Version 3.0 of NSR-ORA or higher.

If OPS is being used, you must pay attention to some further prerequisites (see section “Recovery with ORACLE Parallel Server (OPS)” for further information).

! With the automatic recover until time you cannot use backups which are distributed on several days of the week.

In order to restore a specific database level with these prerequisites you must carry out the following steps:

1.Specify the time.

2.Start ora_recut:

# ora_recut [<ORA-ID>] [-t <time>]

If ora_recut requires further information, you will be prompted to enter it. Basically ora_recut runs fully automatically. Only if errors occur that ora_recut cannot solve on its own, does an error message appear and you are informed that you can attempt to solve the problem yourself, for instance:

The database hadn’t gone down in 5 minutes

System Administrator’s Guide

U42252-J-Z915-1-76

NSR-ORA V3.2 specifications

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