Activating modified PSBs in subsequent subsets of systems with REFRESHPSB

After modified PSBs are activated in an initial subset of IMS systems in an IMSplex by the UPDATEPSB option, you activate the modified PSBs in the remaining systems in the IMSplex by using the REFRESHPSB option of the IMPORT DEFN SOURCE(CATALOG) command.

Before you beginUse the REFRESPSB option only after the UPDATEPSB option.

Ensure that the staging data set of the IMS catalog does not contain any database definitions (DBDs) that are waiting to be activated in the IMSplex. If the staging data set contains pending DBD changes, the IMPORT DEFN command fails when the UPDATEPSB or REFRESHPSB option is specified.

The REFRESHPSB option causes all IMS systems that are specified on the FOR(IMSID()) keyword to reload all PSBs that have a refresh-pending (REFP) status in online memory. The IMS system reloads the PSB the next time the PSB is scheduled after the IMS system processes the IMPORT DEFN command with the REFRESHPSB option.

Procedure

  1. Route the workload away from the target IMS systems of the REFRESHPSB option.
  2. Stop the affected resources on the target IMS systems.
  3. In TSO SPOC or the OM API, specify one or more IMS systems to refresh on the FOR(IMS(ID)) keyword, and route this command to one of those systems: IMPORT DEFN SOURCE(CATALOG) OPTION(REFRESHPSB) FOR(IMSID()).
  4. Start affected resources on the target IMS systems of the refresh.
  5. Test new program definitions on the target IMS systems of the refresh.
  6. When testing is complete, resume workload with the new PSBs on the target IMS systems of the refresh.