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2817683 - Timeslice error with s_xform_to_execute() in a stack trace - SAP ASE

Symptom

  • A timeslice error with a stack trace, for example:

timeslice -3001, current process infected at 103346370 (ibm_get_lock.fdpr.chunk.1+0x30)

  • The following function calls are reported in the ASE errorlog:

    • ibm_get_lock
      s_xform_to_execute
      s_normalize
       
    • ssql_lookup
      xform_to_execute
      s_normalize
       
    • upyield9
      memalloc
      memalloc_zero
      s_xform_to_execute
      s_normalize

  Note: A sample of a complete stack trace is available under Attachments.

  • A memory dump shows a spinlock held on SSQLCACHE_SPIN.
  • The contention in the statement cache pool was high.


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Environment

  • SAP Adaptive Server Enterprise (ASE) 16.0 SP02 PLXX
  • SAP Adaptive Server Enterprise (ASE) 16.0 SP03 PLXX

Product

SAP Adaptive Server Enterprise 16.0

Keywords

819733, CR819733, CR#819733 , KBA , BC-SYB-ASE , Sybase ASE Database Platform (non Business Suite) , Bug Filed

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