TPRESTART, Database mmmm; code: xxxx; blk: yyyy in glbl: zzzz; pvtmods: aaaa, blkmods: bbbb, blklvl: cccc, type: dddd, readset: eeee, writeset: ffff, local_tn: gggg, zpos: hhhh

Run Time Information: The UNIX environment variables GTM_TPRESTART_LOG_FIRST and GTM_TPRESTART_LOG_DELTA control the logging of TPRESTART messages. GTM_TPRESTART_LOG_FIRST indicates the number of TP restarts to log from a GT.M invocation. Once that many have been logged, every GTM_TPRESTART_LOG_DELTA TP restarts, GT.M logs a restart message. If GTM_TPRESTART_LOG_DELTA is undefined, GT.M performs no operator logging. The default value for GTM_TPRESTART_LOG_FIRST is 0 (zero), which leaves the control completely with GTM_TPRESTART_LOG_DELTA. The facility that produces this message can serve as a diagnostic tool in developmental environments for investigating contention due to global updates. A zzzz of "*BITMAP" indicates contention in block allocation which might involve multiple globals. hhhh is the $ZPOSITION of the line of M code that caused the restart of the transaction; utilities leave this field blank.

Action: Disable, or adjust the frequency of, these messages with the mechanism described above. To reduce the number of restarts, consider changes to the global structure, or varying the time when work is scheduled. Consider whether the business and program logic permits the use of NOISOLATION.

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