2617016 - SAP IQ server could crash during concurrent execution of the same stored procedure - SAP IQ 

• SAP IQ server could crash during concurrent execution of the same stored procedure that contains a subquery / a derived table block with the proxy / IQ tables.
• The stack trace contains the functions GetNewTree.
  
  [Sample Stack trace]
  GetNewTree
  MakeExternalCursor
  MakeVolcanoOptimizerCursor
  MakeCursor
  dbi_openselect
  dfe_BuildManagerProc::makeSubqueryCursor
  dfe_BuildManagerProc::BuildExists
  dfe_Factory::BuildAndArgs
  dfe_Builder::BuildPrepExpr
  dfe_Builder::BuildPrepExprValueWithDFE
  dfe_ProcedureExprEvaluator::DoAnnotateAndBuild
  dfe_ProcedureExprEvaluator::AnnotateAndBuildPred
  exec_procedure_stmt
  run_procedure
  dbi_resume_procedure
  handle_open
  do_cursor_execute
  db__execute_any_imm
  do_request
  RequestProcedure::call
  Worker::spawn

• SAP IQ 16.1
• SAP IQ 16.0

CR812294, CR#812294, 812294 , stacktrace, stktrc , Sp , sub-query , KBA , BC-SYB-IQ , Sybase IQ , Problem