2024493 - Stacktrace with signal 11 in lock__semawait leaving the dataserver in a hung state - ASE | SAP Knowledge Base Article

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2024493 - Stacktrace with signal 11 in lock__semawait leaving the dataserver in a hung state - ASE

Symptom

  • Under some rare condition during cleanup after an error, the dataserver may stacktrace and hang
  • Phantom locks are left behind
  • sp_who will show processes stuck in "lock sleep", "latch sleep" or "PLC sleep"
  • The stacktrace shows the following calls:

lock__semawait()
lock_psema()
log__lock()
plc__flush()


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Environment

  • SAP Adaptive Server Enterprise (ASE) 15.7
  • SAP Adaptive Server Enterprise (ASE) 16.0

Product

SAP Adaptive Server Enterprise 15.7 ; SAP Adaptive Server Enterprise 16.0

Keywords

KBA , BC-SYB-ASE , Sybase ASE Database Platform (non Business Suite) , Bug Filed

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