FIX: A performance condition alert is incorrectly raised in SQL Server 2008 or SQL Server 2008 R2 if a case-sensitive collation is configured

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Article ID: 2428916 - View products that this article applies to.
Microsoft distributes Microsoft SQL Server 2008 and Microsoft SQL Server 2008 R2 fixes as one downloadable file. Because the fixes are cumulative, each new release contains all the hotfixes and all the security fixes that were included with the previous SQL Server 2008 or SQL Server 2008 R2 fix release.
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SYMPTOMS

Consider the following scenario:
  • You install an instance of SQL Server 2008 or SQL Server 2008 R2 that is configured to use a case-sensitive collation.
  • You create a SQL Server performance condition alert that uses one of the counters in the following table:
    Collapse this tableExpand this table
    Object Counter
    SQLServer:Buffer ManagerBuffer cache hit ratio
    SQLServer:TransactionsUpdate conflict ratio
In this scenario, the alert is incorrectly raised.

Note This issue does not occur when the instance of SQL Server 2008 or SQL Server 2008 R2 is configured to use a collation that is not case-sensitive.

CAUSE

This issue occurs because a Transact-SQL statement in the msdb.dbo.sp_sqlagent_get_perf_counters system stored procedure uses an incorrect name to read the counter for the performance condition.

This system stored procedure tries to read the corresponding base counter by using an incorrect name for the counter. The incorrect name contains a letter that is the wrong letter case.

RESOLUTION

Cumulative update information


SQL Server 2008

The fix for this issue was first released in Cumulative Update 11 for SQL Server 2008 Service Pack 1.

For more information about this cumulative update package, click the following article number to view the article in the Microsoft Knowledge Base:
2413738 Cumulative update package 11 for SQL Server 2008 Service Pack 1
Note Because the builds are cumulative, each new fix release contains all the hotfixes and all the security fixes that were included with the previous SQL Server 2008 fix release. Microsoft recommends that you consider applying the most recent fix release that contains this hotfix. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
970365 The SQL Server 2008 builds that were released after SQL Server 2008 Service Pack 1 was released
Microsoft SQL Server 2008 hotfixes are created for specific SQL Server service packs. You must apply a SQL Server 2008 Service Pack 1 hotfix to an installation of SQL Server 2008 Service Pack 1. By default, any hotfix that is provided in a SQL Server service pack is included in the next SQL Server service pack.

SQL Server 2008 R2

The fix for this issue was first released in Cumulative Update 5. For more information about how to obtain this cumulative update package for SQL Server 2008 R2, click the following article number to view the article in the Microsoft Knowledge Base:
2438347 Cumulative Update package 5 for SQL Server 2008 R2
Note Because the builds are cumulative, each new fix release contains all the hotfixes and all the security fixes that were included with the previous SQL Server 2008 R2 fix release. We recommend that you consider applying the most recent fix release that contains this hotfix. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
981356 The SQL Server 2008 R2 builds that were released after SQL Server 2008 R2 was released

SQL Server 2008 Service Pack 2

The fix for this issue was first released in Cumulative Update 2 for SQL Server 2008 Service Pack 2. For more information about this cumulative update package, click the following article number to view the article in the Microsoft Knowledge Base:
2467239 Cumulative update package 2 for SQL Server 2008 Service Pack 2
Note Because the builds are cumulative, each new fix release contains all the hotfixes and all the security fixes that were included with the previous SQL Server 2008 fix release. Microsoft recommends that you consider applying the most recent fix release that contains this hotfix. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
2402659 The SQL Server 2008 builds that were released after SQL Server 2008 Service Pack 2 was released
Microsoft SQL Server 2008 hotfixes are created for specific SQL Server service packs. You must apply a SQL Server 2008 Service Pack 2 hotfix to an installation of SQL Server 2008 Service Pack 2. By default, any hotfix that is provided in a SQL Server service pack is included in the next SQL Server service pack.

STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

REFERENCES

For more information about how to define an alert, visit the following Microsoft Developer Network (MSDN) website:
How to define an alert
For more information about the Incremental Servicing Model for SQL Server, click the following article number to view the article in the Microsoft Knowledge Base:
935897 An Incremental Servicing Model is available from the SQL Server team to deliver hotfixes for reported problems
For more information about the naming schema for SQL Server updates, click the following article number to view the article in the Microsoft Knowledge Base:
822499 New naming schema for Microsoft SQL Server software update packages
For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:
824684 Description of the standard terminology that is used to describe Microsoft software updates

Properties

Article ID: 2428916 - Last Review: January 17, 2011 - Revision: 3.0
APPLIES TO
  • Microsoft SQL Server 2008 Developer
  • Microsoft SQL Server 2008 Enterprise
  • Microsoft SQL Server 2008 Standard
  • Microsoft SQL Server 2008 Workgroup
  • Microsoft SQL Server 2008 Standard Edition for Small Business
  • Microsoft SQL Server 2008 R2 Datacenter
  • Microsoft SQL Server 2008 R2 Developer
  • Microsoft SQL Server 2008 R2 Enterprise
  • Microsoft SQL Server 2008 R2 Standard
  • Microsoft SQL Server 2008 R2 Standard Edition for Small Business
  • Microsoft SQL Server 2008 R2 Workgroup
Keywords: 
kbqfe kbhotfixserver kbsurveynew kbexpertiseadvanced KB2428916

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