Requirements for an Archive (ontape) 

Purpose

To archive the Informix database with ontape , you have to meet certain requirements.

Prerequisites

You decide an approach for archive with ontape. This determines the requirements you need to meet. For example, if you decide to perform an archive twice a day, you require more tapes than if you only perform an archive once a day.

Process Flow

  1. You check that you have the correct tape devices.

    2. SAP recommends that you have a at least two tape devices, one for archives and one for logical-log backups. Otherwise, if your logical-logs fill up when you are performing an archive, the database might stop processing.

  2. You check that you have the correct number of tape volumes for archiving.
  3. You define the device TAPEDEV and other entries in the ONCONFIG file. Refer to Configuring ontape.

Do not use /dev/null for TAPEDEV if you want to be able to restore your system, because then the archive is not performed.

Result

You have met the requirements for archiving with ontape . For more information about performing an archive, see Creation of an Archive (ontape).

 

See also:

Informix documentation