Microsoft KB Archive/151301

= FIX: dbcursorfetchex Can Cause Blocking in DB-Library =

Article ID: 151301

Article Last Modified on 10/16/2003

-

APPLIES TO


 * Microsoft SQL Server 6.0 Standard Edition
 * Microsoft SQL Server 6.5 Standard Edition

-



This article was previously published under Q151301



BUG#: 15039



SYMPTOMS
If a DB-library application calls dbcursorfetch or dbcursorfetchex successfully in one thread, subsequent calls to dbcursoropen or dbclose from other threads using the same DBPROCESS would be blocked. Sp_who and sp_lock show no blockage on the server side, and the DB-library application would appear to hang.



CAUSE
dbcursorfetch and dbcursorfetchex do not release the Semaphore on SUCCEED.



WORKAROUND
Use a separate DBPROCESS for each thread.



STATUS
Microsoft has confirmed this to be a problem in Microsoft SQL Server version 6.5. This problem has been corrected in U.S. Service Pack 1 for Microsoft SQL Server version 6.5. For more information, contact your primary support provider.

Keywords: kbbug kbfix kbprogramming KB151301

-

[mailto:TECHNET@MICROSOFT.COM Send feedback to Microsoft]

© Microsoft Corporation. All rights reserved.