How to add additional journals for dynamic use during peak processing
Article ID: 56575
Updated On:
Products
Issue/Introduction
During peak processing time at year end, extended batch jobs require additional journals. Is there a way to dynamically add disk journals when needed?
Environment
IDMS - All Supported Releases
Resolution
The recommendation is to add additional Disk Journal definitions to your CV DMCL permanently.
If for example you have 6 Disk Journals defined but you only want to use 4 on a daily basis, you could
have a startup process vary the 5th and 6th Disk journals offline.
When running the year-end batch jobs in question, you can vary one or both of the extra journal files online.
To reduce contention during offload operations, you should:
- Place the disk journals on disk packs that do not contain database or dictionary files
- Assign each disk journal to a different volume
You should also have an initiator that is dedicated to archive jobs. You
don't want the archive journal jobs to contend for an initiator with other
jobs.
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