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2348125 - Hundreds of sleeping sessions with MAINTENANCE TOKEN - SAP ASE

Symptom

  • There were multiple stack traces because of timeslice errors or "infected with signal 11" messages.
  • Stack traces may include functions:

csi_sha_digest
login__aseauth

  Note: Samples of complete stack traces are available under Attachments.

  • Logins are hanging stuck in MAINTENANCE TOKEN, stacks stuck sleeping in csimtx_lock.
  • All sleeping sessions with status = ‘MAINTENANCE TOKEN’ are holding Sh_intent and Sh_row lock on master..syslogins table (showing the session is not completely established on ASE).
  • All sessions are waiting with Event 717 (CSI module waiting for csi mutex) and waittime is increasing. PIO (physical I/O) is 0.


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Environment

  • SAP Adaptive Server Enterprise (ASE) 15.7
  • SAP Adaptive Server Enterprise (ASE) 16.0 GA - 16.0 SP02

Product

SAP Adaptive Server Enterprise 15.7 ; SAP Adaptive Server Enterprise 16.0

Keywords

CR800624, C#800624, 800624, SEGV, segmentation, storage, access, violation, fault, segfault, kisignal, stacktrace, OpenSSL , KBA , BC-SYB-ASE , Sybase ASE Database Platform (non Business Suite) , Bug Filed

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