DFS4757I NON-RETRYABLE tttttttt REQUEST FAILURES AT CHKPT yyddd/hhmmss. COUNT:cccccccccc OLDEST UOWSTCK: ssssssssssssssss OLDEST QNAME: nnnnnnnnnnnnnnnn OLDEST UOWE TIME: yyyy.jjj hh.mm.ss GMT
Explanation
During IMS system checkpoint unit of work (UOW) retry processing, one or more CQS requests failed with non-retryable return codes for UOWs with deferred CQS actions. IMS writes X'3F' log records containing the UOW IDs that are associated with the failed CQS requests, and then deletes its internal record of the UOWs. This message indicates that this situation occurred.
This message also can be issued during IMS emergency restart (ERE) processing when IMS encounters X'3F' records for discarded UOWs from an earlier checkpoint. Thus, two separate DFS4757I messages might be received for the same discarded UOWs - one at checkpoint, and one during emergency restart. This ensures that this message either is not missed or is not lost if IMS abends after discarding the UOWs but before being able to issue the message.
- tttttttt
- The type of the CQS request that failed as the request was retried and can be one of the
following values:
- CQSPUT
- CQSUNLCK
- yyddd/hhmmss
- The timestamp, which identifies the checkpoint that invoked the retries of the CQS requests.
- cccccccccc
- The number of the CQS requests that failed for the specified CQS request type.
- ssssssssssssssss
- The type 01/03 log record's UOW store clock token, MSGPROTK. This value indicates the time when the message was inserted into the queue manager.
- nnnnnnnnnnnnnnnn
- The destination queue for the oldest CQSPUT or CQSUNLCK UOW. If the destination queue name contains only printable EBCDIC characters, QNAME is an 8-byte value that contains this printable queue name. If the destination queue name contains non-printable characters, QNAME is a 16-byte hexadecimal value that contains the queue name.
- yyyy.jjj hh.mm.ss
- The store clock value from UOWSTCK, converted to yyyy.jjj hh.mm.ss format, where yyyy is the year, jjj is the Julian day of the year , and hh.mm.ss is the time of day in GMT.
System action
IMS continues processing.
Output destination
The Master Terminal and System Console
Programmer response
Collect IMS log data between OLDEST UOWE TIME and the time DFS4757I is issued and contact IBM® Software Support. If DFS4757I is issued with CQSPUT, the discarded message can be re-enqueued; if it is issued with CQSUNLCK, a warm start of IMS or CQS can unlock the message from the shared queues.