DFS3804I LATEST RESTART CHKPT: yyddd/hhmmss, LATEST BUILDQ CHKPT: yyddd/hhmmss

Explanation

At the completion of each IMS checkpoint, IMS issues this message to inform you of the last checkpoint ID that is valid for loading DC blocks. When running in an XRF environment, it indicates which IMS system (HSBID) wrote the CHKPT. The latest RESTART or RESTART CHKPT indicates which IMS system must be restarted when an XRF system abends. The exception to this is a BLDQ restart, which can be done by either IMS system.

The first form of this message is issued in a non-XRF environment.

The second form of this message is typically issued when running in XRF. For XRF systems following a shutdown checkpoint or a restart, the word LATEST does not appear in the message, and the word RESTART is abbreviated to RST.

The third form of this message is issued only after a takeover occurs, and when the system checkpoint needed for IMS recovery was written before the LAST DC CHKPT and before the takeover. The new checkpoint ID, LOG READ CHKPT, indicates only the checkpoint at which IMS starts reading the input log. The checkpoint ID does not have an HSBID and must not be used when determining which IMS system to restart.

In some circumstances, IMS might not be have been able to issue this message with a latest checkpoint during a shutdown or cancel. In such circumstances, a later restart might show a different CHKPT.