Making local online changes in an XRF complex

In the IMS™ DB/DC and DCCTL XRF environments, in addition to preparing the staging libraries, you need to prepare the inactive libraries.

If an XRF takeover occurs while the active IMS is processing a /MODIFY COMMIT command, the change might or might not have occurred. At the end of an online change, IMS writes a log record; the XRF alternate subsystem reads the log and makes the online changes to match the changes on the active subsystem. Use the /DISPLAY DB or QUERY DB command to check that a change occurred on the alternate subsystem.