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3748008 - Error 834 "Illegal Attempt to Clean Buffer" and Error 6103 Result in Ghost Process with Retained Locks - SAP ASE

Symptom

  • Error 834 reported: "Illegal attempt to clean buffer" with stack:

      exc_raise
      buffree
      bufunkeep_do_decrement
      bufunkeep_cache
      bufdbtlastlog
      log__newpage
      plcblock__flush.isra.0
      plc__flush
      xls_preflush
      syslogs_finishlog
      finishlog
      ../..

  • Subsequent Error 6103 reported: "Unable to do cleanup for the stopped process; received 3300.".
  • A ghost/zombie process remains present after the errors.
  • Attempts to stop it report that the process does not exist.
  • Execution of "sp_lock" system stored procedure shows retained locks for the ghost/zombie spid.
  • Other connections can hang due to the retained locks.
  • ASE server restart need to be execiuted to clear the ghost process.


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Environment

  • SAP Adaptive Server Enterprise (ASE) 16.0 SP04 PL06

Product

SAP Adaptive Server Enterprise 16.0 ; SAP Adaptive Server Enterprise 16.1

Keywords

831848, CR#831848, CR# 831848, error 834, 834, illegal attempt to clean buffer, error 6103, 6103, ghost, zombie, locks, hanging, buffree, bufunkeep_do_decrement, bufunkeep_cache, bufdbtlastlog, log__newpage, plc__flush , KBA , BC-SYB-ASE , Sybase ASE Database Platform (non Business Suite) , BC-DB-SYB , Business Suite on Adaptive Server Enterprise , Problem

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