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1998509 - Timeslice error with modules write and b_cerrlog_uio causing server hang - SAP ASE

Symptom

  • At runtime or when booting an ASE server
  • The errorlog reports a timeslice error with a stack including write and b_cerrlog_uio:

    timeslice -501, current process infected

    write
    sema_post
    b_cerrlog_uio
    uciverrlog
    cm_init_cache

  • Further errors can be seen after the stacktrace, including:

    kernel Warning: The internal timer is not progressing. If this message is generated multiple times, report to Sybase Technical Support and restart the server (alarminterval=214)
  • The ASE server is unusable and users no longer able to log in


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Environment

SAP Adaptive Server Enterprise (ASE)

Product

SAP Adaptive Server Enterprise all versions

Keywords

unresponsive, hung, time slice, process infected, stack, writes never completed, hung terminal session , full  tcp/ip queue backlog, traceflag 4084 , KBA , BC-SYB-ASE , Sybase ASE Database Platform (non Business Suite) , Bug Filed

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