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2641970 - CTLIB: Multiple threads may cause SSL connections to fail with two endpoints failed - SDK for SAP ASE


Intermittent SSL connections failures are reported with the following error:

  • CT-Library error:
    Number: (X) LAYER = (5) ORIGIN = (3) SEVERITY = (5) NUMBER = (4)
    Message String: ct_connect(): network packet layer: internal net library error:
    Net-Lib protocol driver call to connect two endpoints failed
  • Operating System Error: Could not set SSL/TLS protocol version.
    ERROR: Error in ctlib_message_handler



  • SAP Sybase Software Developer Kit (SDK) 15.7
  • SAP Adaptive Server Enterprise (ASE) Software Developer Kit (SDK) 16.0
  • Open Client Client-Library
  • ctlibrary


SAP Adaptive Server Enterprise 15.7 ; SAP Adaptive Server Enterprise 16.0 ; SAP Adaptive Server Enterprise SDK 16.0 ; Sybase Software Developer Kit 15.7


CR#813087, CR813087. CR# 813087 , KBA , BC-SYB-SDK , SDK , BC-SYB-ASE , Sybase ASE Database Platform (non Business Suite) , Problem

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