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1966133 - Errors "nopen: accept, Bad file number" or "Socket operation on non-socket" reported in errorlog - ASE


  • Errors reported to Adaptive Server Enterprise (ASE) errorlog in continuous loop:

kernel nopen: accept, Bad file number

kernel nopen: accept, Socket operation on non-socket

  • ASE configured for multiple engines
  • Occurs only on Unix-based systems
  • Use sp_listener and sp_engine or DBCC ENGINE to "online" one or more additional ASE engines
  • Execution of sp_sysmon prior to the engine online attempt changes error to the socket message above
  • Truss output for the indicated engine may report Err#95 ENOTSOCK



  • SAP Adaptive Server Enterprise (ASE) 12.5.x
  • Sybase Adaptive Server Enterprise (ASE) 15.0
  • Sybase Adaptive Server Enterprise (ASE) 15.0.1


SAP Adaptive Server Enterprise 12.5 ; Sybase Adaptive Server Enterprise 15.0


KBA , cr421061 , BC-SYB-ASE , Sybase ASE Database Platform (non Business Suite) , Bug Filed

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