2210765 - IQ15.4 server crash in 'hs_dpUpdate::Complete' while update SQL is running

Symptom

An IQ secondary server got crash with "st_server.cxx:1442" error and stacktrace at end of an Update query phase.
The update SQL is a regular daily batch jobs. After the crash, re-run the same update was completed well.

This crash had been produced many times since ESD4.x, latest crash was on Feb/2015.
All crashes so far happened when update SQLs were executed

[Stacktrace of IQ connID: 0000005620 ]
   ..
   ...hos_ABORT...
   ...SigHndlr+0x54()
   ...hs_dpUpdate::Complete ...
   ...db_UpdateCompleteIterator::CompleteIndex...
   ...db_UpdateCompleteIterator::ExecWork...
   ...workAllocator::DoWork ...
   ...workAllocator::sDoWork(...

Environment

SAP IQ16
SAP IQ15.4

Product

SAP IQ 16.0 ; SAP Sybase IQ 15.2 ; SAP Sybase IQ 15.4 ; Sybase IQ 12.7

Keywords

hs_dpUpdate ; db_UpdateCompleteIterator ; s_txnMgr::PostCommitTxn ; , KBA , BC-SYB-IQ , Sybase IQ , Problem

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