SAP Knowledge Base Article - Preview

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

About this page

This is a preview of a SAP Knowledge Base Article. Click more to access the full version on SAP ONE Support launchpad (Login required).

Search for additional results

Visit SAP Support Portal's SAP Notes and KBA Search.