Back Up Before and After Local Mode Jobs

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Back Up Before and After Local Mode Jobs

Two Options

To protect data to be accessed by an update job running in local mode, you can either:

Use local mode journaling. This option is best for large databases that would require a long time to backup and restore.
Back up the database before and after you run the job. This option is best for small databases that can be backed up within a reasonable time frame.

Note: For information about local mode journaling, see Chapter 19, “Journaling Procedures”.

Steps to Back Up the Database

Follow the steps below to back up a database before and after running an update application in local mode:

Action	Steps
Make the areas to be accessed by the application unavailable under the central version	DCMT VARY AREA or SEGMENT with the OFFLINE, RETRIEVAL, or TRANSIENT RETRIEVAL option
Before running an application, back up each file of the database	BACKUP or any comparable backup utility
Dummy the journal file by adding a dummy file definition statement in the execution JCL of the local mode application if the DMCL being used has a tape journal file defined
After running the application,back up each file of the database	BACKUP or any comparable backup utility
Swap to another disk journal file to coordinate CVs archive journal files with the backup	DCMT VARY JOURNAL
Re-activate the areas for use under the central version	If the areas are OFFLINE or in RETRIEVAL mode,issue DCMT VARY AREA or SEGMENT ONLINE If the areas are in TRANSIENT RETRIEVAL mode, first vary them OFFLINE and then ONLINE.

CA ADS: When you vary an area in preparation for a local mode update, CA ADS users should vary the area to either OFFLINE or TRANSIENT RETRIEVAL mode; do not use RETRIEVAL mode.