DFS0739I tt...tt DDNAME=dddddddd LOGSEQ=nnnnnnnn
Explanation
An error occurred while accessing a log data set during IMS restart.
- dddddddd
- The ddname of the data set last processed when the error was encountered. dddddddd can be blank.
- nnnnnnnn
- The log sequence number last processed. nnnnnnnn can be blank.
- tt..tt
- A string indicating the reason for the error. This variable can
be one of the following strings:
- OPEN ERROR FOR IMS LOG
- Could not open the data set.
- CLOSE ERROR FOR IMS LOG
- Could not close the data set properly.
- READ ERROR ON IMS LOG
- Read error.
- WRITE ERROR ON IMS LOG
- Write error occurred while formatting the WADS.
- LOG SEQ ERROR ON IMS LOG
- Next sequential block or log record not found.
- MISSING BLOCK ON IMS LOG
- The next sequential log physical block was not found, but a higher sequence log physical block was found.
- TRKCALC FAILED FOR IMS LOG
- TRKCALC macro failed
- LOGIC ERROR
- A logic error was detected.
- UNABLE TO ALLOCATE IMS LOG
- Dynamic allocation failed, a DD statement is missing, or OPEN failed.
- SEQUENCE ERROR - BOTH OLDS
- In dual logging, a read error was detected on both OLDS.
- READ ERROR - BOTH OLDS
- In dual logging, a read error was detected on both OLDS.
- XRF-ALT OR FDR GOT AN SLDS
- In an XRF complex, the alternate (backup) system either allocated
an SLDS or determined that the next log to be allocated is an SLDS.
In a Fast Database Recovery environment, the Fast Database Recovery region either allocated an SLDS or determined that the next log to be allocated is an SLDS.
- WAITING FOR RESERVE - OLDS
- In an XRF complex, takeover was requested, but the alternate system is unable to reserve the current OLDS.
- WAITING FOR RESERVE - WADS
- In an XRF complex, takeover was requested, but the alternate system is unable to reserve the current WADS.
- DFSFDLVO RRTT TABLE ERROR
- A restart read transition table error was detected.
- REREAD LAST GOOD BLK FAIL
- During normal error recovery, an attempt to reread the last good OLDS block failed.
System action
IMS continues processing if an alternative input log data set is available or issues DFS0739X and terminates with abend 0175.
In an XRF complex, the IMS alternate system encountered errors from which recovery was impossible. IMS issues message DFS0739X and terminates with abend 0176.
In a Fast Database Recovery environment, the IMS system issues message DFS0739X and terminates with abend 0176.
Operator response
If this error occurred during Fast Database Recovery region initialization, take a simple checkpoint in the active IMS system, and make sure that the restartable checkpoint is found in the OLDS before restarting the Fast Database Recovery region.
Problem determination
1, 5, 8, 11, 35
Save a copy of the OLDSs and WADSs data sets. Also, list the DBRC RECON data set.