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2760444 - Timeslice during alter thread pool results in error 1794 forcing a reboot to clear - SAP ASE

Symptom

  • Timeslice error in atomic_try is seen when increasing the number of engine threads using "alter thread pool"
  • The stack contains the following modules
    ub__alloc
    uballoc
    kieng_allocproccache
    kieng_proccache
    dynengine_init
    dynengine_create
    ktCreateMuxThread
    utp__CreateThread
    utpSetPoolSize
    threadpool__update
    alter_threadpool
    s_execute
  • Subsequent attempt to run alter thread pool fails with error 1794.
    The previous 'alter thread pool syb_default_pool' command is still in progress, hence the current command is aborted. Please try again !

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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

CR818545, CR#818545, 818545, timeslice, error 1794, engine thrashing, procedure cache, atomic_try , KBA , BC-SYB-ASE , Sybase ASE Database Platform (non Business Suite) , Problem

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