SAP Knowledge Base Article - Preview

2062147 - Under certain conditions, running excessive isClosed() methods on Connection object might result in performance degradation - SDK for SAP ASE


  • Stand alone JDBC apps make many isClosed() calls and find the default query "sp_mda(?, ?)" causes utilization problem on their ASE.
  • Tools such as query analyzers on the ASE demonstrate high usage for the activity associated with isClosed().
  • Showplan does show a lot of activity in the procedure to return the simple result set.
  • Performance degradation of the applications.



  • SAP Sybase Software Developer Kit (SDK) 15.7 S
  • jConnect
    • 7.07 JDBC Driver


SAP Adaptive Server Enterprise 16.0 ; Sybase SDK 15.7


KBA , BC-SYB-SDK , SDK , BC-SYB-ASE , Sybase ASE Database Platform (non Business Suite) , Problem

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