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Process documentation Creation of an Archive (ontape)  Locate the document in its SAP Library structure

Purpose

This section tells you how to create an archive of the Informix database with ontape .

Prerequisites

You have worked out an approach and met its requirements.

Note

Before you perform a database archive, verify database consistency. Do this as often as possible before archives. Make sure that you always have at least one archive that you have checked for data consistency.

If you only have one tape drive, you should back up as many logical-log files as possible before starting the archive to avoid a full logical log during the archive. In this situation, the database stops processing. You then need a second tape drive to back up the logical log. For information about recovering from a full logical log, see Performing Emergency Backup with ontape.

Process Flow

  1. You perform the archive.
  2. You check the result with the message file.
  3. You write the following information on your tapes to simplify the restore process:

- Date and time of archive

- Archive level

- Tape number from ontape

Since your archives are vital to restore your database in the event of failure, SAP recommends copying the volumes and storing the copies at a different physical location.

Result

The database is archived. Therefore, you have a copy of database data that can be restored in the event of database failure.

Caution

To make sure that your tapes can be used in the event of a restore, you must always check your tapes after every archive. For more information, see Checking Tapes After an Archive (ON-Archive and ontape).

 

See also:

Informix documentation at http://www.informix.com