Enable Journal

Use the Enable Journal option to enable or disable journaling for JMS IQ Managers. When you enable journaling, every inbound message is automatically copied to the journal database. The message is then held in the journal database for the duration of the time to live value specified for journaled messages.

By default, the expiration time for a journaled message is 7 days. To change the time to live for journaled messages, refer to Journaling Maximum Lifetime. The time to live property for journaled messages is completely independent of when the live counterpart of the message is consumed by its publisher.

When a journaled message expires, it is not deleted from the journal database, but remains there until you back up the topics or queues. When you back up, all messages in the journal database are included in the archive, and the journal expired messages are removed from the journal database. You should back up daily when journaling is enabled; otherwise, the journal database retains journal expired messages and can grow exceedingly large. Because the journal database and the JMS IQ Manager database are located on the same system, you must guard against running out of disk space.

To back up the journal database, you use the MS Control Utility. For more information, refer to To Create a Backup Archive File.

When messages are in the journal database, you can view them but not edit them. You can use either Enterprise Manager or the STC MS Control utility to view and republish journaled messages. For more information about the MS Control utility, see JMS Provider Management.

Default Condition

Journaling is disabled by default.