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2715495 - Hang on commit when user log cache queue size is enabled

Symptom

Customer reported that while executing a batch they noted some processes that was executing a COMMIT were not running (seems to be hang).

This occurred after enabling parameter "user log cache queue size".

Memory dump reported the following stack trace for the processes involved:

1)

kpsuspend
upsleepgeneric
smp_bufpredirty
plcblock__flush
xls_flush_plcqueue
plc__flush
xls_preflush
syslogs_finishlog
finishlog
xact__endxact
xact__commitxact
xact__commit_local
xact_commit
s_execute

2)

kpsuspend
upsleepgeneric
cm_writedes
bufwritedes_log
xls_flush
write_prepare_rec
xact__preparexact
xact__commitxact
xact__commit_local
xact_commit
s_execute

3)

kpsuspend
upsleepgeneric
xls_flush_plcqueue
plc__flush
xls_preflush
syslogs_finishlog
finishlog
xact__endxact
xact__commitxact
xact__commit_local
xact_commit
s_execute


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Environment

  • Adaptive Server Enterprise/16.0 SP03 PL05

Product

SAP Adaptive Server Enterprise 16.0

Keywords

hang user log cache queue size xls_flush_plcqueue cm_writedes smp_bufpredirty plcblock__flush xls_preflush xls_flush CR 817178 , KBA , BC-SYB-ASE , Sybase ASE Database Platform (non Business Suite) , Problem

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