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Procedure documentation Preparing for a Full-System Cold Restore (ontape)  Locate the document in its SAP Library structure

Use

This section describes what you need to do before performing a full-system cold restore of your Informix database if you use ontape as your data recovery tool (that is, for your archives and backups).

Note

Label your tapes after every archive or backup. Include all essential information required for a restore, such as date of archive or backup, save set id, volume set and volume, dbspace names, logical-log file numbers, and so on. This makes the cold restore easier.

Procedure

  1. Gather all tapes containing the most recent level-0, level-1, and level-2 archives.
  2. Identify the tape that contains the last level-0 archive of the dbspace rootdbs . You need this tape first. It is assigned number 1 in the sequence of level-0 archives to be used.
  3. Determine the tapes that contain the logical-log files backed up since this level-0 archive. If you want to restore level-1 or level-2 archives, you need to find only the files backed up since the most recent archive (with the highest level).
  4. Make sure that the current database server configuration is compatible with, and accommodates, all parameter values specified in the ONCONFIG file after the most recent archive. Use the copy of this file that was in use at the time of the archive.

All raw devices or files that have been used since the level-0 archive must be available. Changes might include, for example, chunks added, dbspaces dropped, dbspaces mirrored, and so on.

For more information, see the Informix documentation.

Result

Now you can go on to Performing Full-System Cold Restore (ontape).

 

See also:

Informix documentation