DOCUMENT:Q175904 26-AUG-1999 [odbc] TITLE :BUG: Multiple threads Cause Connection Busy Error in the Driver PRODUCT :Open Database Connectivity (ODBC) PROD/VER:WINDOWS:2.5,3.0; winnt:6.5 OPER/SYS: KEYWORDS:kbinterop kbSQLServ650bug ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft SQL Server version 6.5 - Microsoft Open Database Connectivity, versions 2.5, 3.0 ------------------------------------------------------------------------------- BUG #: 17322 (6.50) SYMPTOMS ======== Multiple threads, each allocating its own HSTMT using server cursors (active statements) sharing a single connection, cause the following error on prepared execution of a SQL statement: S1000: [Microsoft][ODBC SQL Server Driver] Connection is busy with results for another hstmt WORKAROUND ========== To work around this problem, use SQLExecDirect statements instead of SQLPrepare and SQLExecute when using multiple active HSTMTs (on different threads) and server cursors. STATUS ====== Microsoft has confirmed this to be a problem in SQL Server version 6.5 and Open Database Connectivity version 3.0. We are researching this problem and will post new information here in the Microsoft Knowledge Base as it becomes available. Additional query words: timing multi-threaded ====================================================================== Keywords : kbinterop kbSQLServ650bug Technology : kbSQLServSearch kbAudDeveloper kbSQLServ650 kbODBCSearch kbODBC300 kbODBC250 Version : WINDOWS:2.5,3.0; winnt:6.5 Issue type : kbbug ============================================================================= THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY. Copyright Microsoft Corporation 1999.