Putting the IDMS CV in read-only or retrieval mode

Products

• IDMS
• IDMS - Database

Issue/Introduction

Can the IDMS CV be put in read-only or retrieval mode for a few hours?

What are the implications of doing this?

Any subsequent impact, after the all databases are put in read-write or update mode?

Environment

Release: 19.0

Resolution

The IDMS CV can be put into retrieval mode by using DCMT VARY SEGMENT segment.name RETRIEVAL commands for all user segments in the CV. This will put all areas in the segments to retrieval mode.

While the areas are in retrieval mode, any program tryng to update the database will get a 0966 error status.
Retrieval programs will still work if they ready the areas in retrieval mode.

The DCMT commands can be executed via a UCFBATCH job.

To enable updating again use DCMT VARY SEGMENT segment.name UPDATE for all user segments. These DCMT commands can also be executed via a UCFBATCH job.

There is no other impact when re-enabling update mode.

Additional Information

See documentation section DCMT VARY SEGMENT.