Symptoms
This article describes the following about this hotfix release:The issues that are fixed by this hotfix packageThe prerequisites for installing the hotfix packageInformation about whether you must restart the computer after you install the hotfix packageInformation about whether the hotfix package is replaced by any other hotfix packageInformation about whether you must make any registry changesThe files that are contained in the hotfix package
Resolution
When you run a query that uses a plan guide in SQL Server 2005, the query may intermittently fail. Additionally, an access violation that resembles the following is logged in the SQL Server Errorlog file:

2006-08-23 13:34:10.48 spid438***Stack Dump being sent to H:\MSSQL\LOG\SQLDump0016.txt
2006-08-23 13:34:10.48 spid438SqlDumpExceptionHandler: Process 438 generated fatal exception c0000005 EXCEPTION_ACCESS_VIOLATION. SQL Server is terminating this process.
2006-08-23 13:34:10.48 spid438* *******************************************************************************
2006-08-23 13:34:10.48 spid438*
2006-08-23 13:34:10.48 spid438* BEGIN STACK DUMP:
2006-08-23 13:34:10.48 spid438*08/23/06 13:34:10 spid 438
2006-08-23 13:34:10.48 spid438*
2006-08-23 13:34:10.48 spid438*
2006-08-23 13:34:10.48 spid438*Exception Address = 00000000034CE1D0 Module(sqlservr+00000000024CE1D0)
2006-08-23 13:34:10.48 spid438*Exception Code= c0000005 EXCEPTION_ACCESS_VIOLATION
2006-08-23 13:34:10.48 spid438*Access Violation occurred reading address 0000000000000010 This problem occurs if the following conditions are true:The query uses a plan guide.The query accepts some parameters.The plan guide applies the OPTIMIZE FOR hint for the query. The query is recompiled before you run the query .