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2093932 - Error 1601 "There are not enough 'user connections' available'" after reducing thread count - SAP ASE

Symptom

  • SAP ASE errorlog contains an error 1601:

There are not enough 'user connections' available to start a new process. Retry when there are fewer active users, or ask your System Administrator to reconfigure SQL Server with more user connections

  • SAP ASE errorlog contains the following error messages:

nopen: no room in socket table
Failed to allocate object from SQL Text Object Pool.

  • SAP ASE server can become unresponsive.
  • User connections are sufficient
  • The thread count on the default thread pool (syb_default_pool) has been changed.


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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

infected, signal, SEGV, SIGSEGV, segment, violation, storage, access, kisignal, nopen, "no room in socket table", CR771433, 771433,  CR#771433,Error: 1601 , KBA , BC-SYB-ASE , Sybase ASE Database Platform (non Business Suite) , Bug Filed

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