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2635332 - Client application for ASE using ESQL/C hangs in FETCH operations.


  • In an application (written in C/C++ and using Sybase ESQL/C) a FETCH operation hangs when called for the 2nd time (the first FETCH returns fine the row).
  • Developer found that the ct_fetch() function is not returning or ending after being called, it hangs.
  • Monitoring system calls with Solaris' truss command, it shows that the hanging is due to a missing send data to ASE, the ct_fetch() just results in a read() system call on the network and ASE server is not sending any reply.



  • SAP Adaptive Server Entreprise (ASE) 16.
  • SAP Adaptive Server Entreprise (ASE) 15.7
  • SAP Adaptive Server Entreprise (ASE) Software Development Kit (SDK) 16.
  • Sybase Software Development Kit (SDK) 15.7


SAP Adaptive Server Enterprise 15.7 ; SAP Adaptive Server Enterprise 16.0 ; SAP Adaptive Server Enterprise SDK 16.0 ; Sybase SDK 15.7


enable compatibility mode,fetch,ESQL/C,ESQL,ct_fetch , KBA , BC-SYB-SDK , SDK , BC-SYB-ASE , Sybase ASE Database Platform (non Business Suite) , Problem

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