Some abnormal situations, such as ABENDs or logical errors, can cause a control area (CA) split or CA reclaim to be interrupted. A logical error results in VSAM backing out the CA split that is in progress and returning a nonzero return code to the PUT that caused the CA split. When a CA split is aborted in an abnormal condition, an unreachable new CA (commonly referred to as an orphan CA) can be left behind within the data set. This in itself does not cause a data integrity problem and the data set is fully functional and accessible.
EXAMINE NAME(xxxxxxxx) INDEXTEST DATATEST
IDC01700I INDEXTEST BEGINS
IDC11724I DATA COMPONENT CA NOT KNOWN TO
SEQUENCE SET
IDC21700I MINOR ERRORS FOUND BY INDEXTEST
IDC01701I DATATEST BEGINS
IDC11768I [CI SPLIT | CA RECLAIM] IN PROGRESS
IDC01713I DATA CONTROL INTERVAL DISPLAY AT RBA
yyy FOLLOWS
...
IDC01714I ERROR LOCATED AT OFFSET zzzzzzzz
IDC11724I DATA COMPONENT CA NOT KNOWN TO SEQUENCE SET
IDC21703I MINOR ERRORS FOUND BY DATATEST
IDC0001I FUNCTION COMPLETED, HIGHEST CONDITION CODE WAS 4
EXAMINE NAME(xxxxxxxx) INDEXTEST DATATEST
IDC01700I INDEXTEST BEGINS
IDC11718I DATA COMPONENT HIGH-USED RBA IS NOT EQUAL TO CA SIZE
IDC01702I HIGH-USED RBA/CI IS xx
IDC01705I CONTROL AREA SIZE IS xxxx
IDC11711I INDEX CONTROL INTERVAL COUNT ERROR
IDC01708I 1 CONTROL INTERVALS ENCOUNTERED
IDC01702I HIGH-USED RBA/CI IS xxx
IDC01704I CONTROL INTERVAL SIZE IS xxxx
IDC11708I HIGH-USED INDEX RBA DOES NOT EQUAL HIGHEST RBA FOUND
IDC01702I HIGH-USED RBA/CI IS xxx
IDC01706I RBA/CI IS xxx
IDC21701I MAJOR ERRORS FOUND BY INDEXTEST
IDC01701I DATATEST BEGINS
IDC11768I [CI SPLIT | CA RECLAIM] IN PROGRESS
IDC01713I DATA CONTROL INTERVAL DISPLAY AT RBA xxxx FOLLOWS
...
IDC01714I ERROR LOCATED AT OFFSET xxxxxxxx
IDC11724I DATA COMPONENT CA NOT KNOWN TO SEQUENCE SET
IDC21703I MAJOR ERRORS FOUND BY DATATEST
IDC0001I FUNCTION COMPLETED, HIGHEST CONDITION CODE WAS 8
EXAMINE NAME(xxxxxxxx) DATATEST NOINDEXTEST
IDC01701I DATATEST BEGINS
IDC11768I [CI SPLIT | CA RECLAIM] IN PROGRESS
IDC01713I DATA CONTROL INTERVAL DISPLAY AT RBA
yyy FOLLOWS
...
IDC01714I ERROR LOCATED AT OFFSET zzzzzzzz
IDC11724I DATA COMPONENT CA NOT KNOWN TO SEQUENCE SET
IDC21703I MAJOR ERRORS FOUND BY DATATEST
IDC0001I FUNCTION COMPLETED, HIGHEST CONDITION CODE WAS 8
Supportive messages display pertinent data, and processing continues.
The dataset has ownership of physical space on the volume that it will never use. To clean up the orphaned CAs, a reorganization of the dataset will need to be done. This corrective action applies to only the RC=4 situations. When RC=8, the data set might be broken and might need to be recovered with a process beyond reorganization.
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