Commands applicable to global online change

To perform a global online change, issue a command to make the inactive libraries (those containing the changes to be made) active or to copy members from the staging library to the active.

The following commands make the inactive libraries active or copy the staging library to the active:

1. /DISPLAY MODIFY

   This command produces a list of the resources (that are to be changed or deleted) that have work pending. No changes are accepted when work is pending. Use this command to ensure no work is pending after issuing an INITIATE OLC PHASE(PREPARE) command and before issuing an INITIATE OLC PHASE(COMMIT) command.

2. INITIATE OLC PHASE(PREPARE)

   This command prepares all of the IMS systems in the IMSplex for global online change by specifying which resources to add, change, or delete.

   When running in an environment without RM (RMENV=N), this command performs the online change only at the command master IMS or the single IMS to which the command is routed.

3. INITIATE OLC PHASE(COMMIT)

   This command commits global online change on all IMS systems in an IMSplex.

   When running in an environment without RM (RMENV=N), this command performs a local online change on the IMS that processes it.

You might have to issue additional commands after INITIATE OLC PHASE(PREPARE) to display and resolve work in progress that might cause the commit to fail. These commands include:

TERMINATE OLC

This command aborts global online change on all IMS systems in an IMSplex.

When running in an environment without RM (RMENV=N), this command terminates a local online change on the IMS that processes it.

QUERY MEMBER

This command displays status or attribute information about IMS systems in an IMSplex, including local or global online change status, if applicable.

QUERY OLC

This command provides information about the OLCSTAT data set contents or resources being modified with TYPE(ACBMBR) OLC.