Updating runtime database resource and descriptor definitions with the UPDATE command

With dynamic resource definition (DRD) enabled, you can update runtime resources and resource descriptors dynamically, eliminating the need to use the online change process or the batch system definition process with an IMS cold start.

You cannot update database resource definitions if there is work in progress for the database, or if the database is currently in use.

Update runtime database resource and descriptor definitions using the UPDATE DB and UPDATE DBDESC commands.

Procedure

  1. Check for work in progress using a QRY DB SHOW(WORK) command. If there is work in progress, either:
    1. Wait for the work to finish.
    2. Address the work in progress.
      Examples of work in progress include a command is in progress for the database, or the database is in use.
  2. Stop the database using either an UPDATE DB STOP(ACCESS) or /DBR DB command
  3. Issue an UPDATE DB or UPDATE DBDESC command specifying the values you want to change for the database or descriptor definitions, respectively.