FIX: SQL-DMO::EnumQueuedTasks May Cause Memory Leak (193390)
The information in this article applies to:
- Microsoft SQL Server 6.5
- Microsoft SQL Workstation 6.5
This article was previously published under Q193390
BUG #: 18128 (SQLBUG_65)
SYMPTOMS
The SQL Distributed Management Objects (SQL-DMO) Executive object's
EnumQueuedTasks method is used to enumerate running tasks on SQL Server.
SQL Server and SQL Executive may leak 4 KB of memory each time the
EnumQueuedTasks method is invoked. SQL Enterprise Manager invokes this
method when the Refresh button is pressed in the Current Activity window.
Over an extended period time, this may cause adverse memory effects on the
server computer.
CAUSE
The SQL Server and SQL Executive services exchange task information by
means of a shared memory area. The action of sharing the information is not
properly releasing all allocated memory.
RESOLUTIONA supported fix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Apply it only to computers that are experiencing this specific problem. This fix may receive additional testing. Therefore, if you are not severely affected by this problem, Microsoft recommends that you wait for the next SQL Server service pack that contains this hotfix. To resolve this problem immediately, contact Microsoft Product Support Services to obtain the fix. For a complete list of Microsoft Product Support Services phone numbers and information about support costs, visit the following Microsoft Web site: NOTE: In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The typical support costs will apply to additional support questions and issues that do not qualify for the specific update in question.
The English version of this fix should have the following file attributes or later:
File name Platform
----------------------
Sql447i.exe Intel
Sql447a.exe Alpha
NOTE: Due to file dependencies, the most recent hotfix or feature that contains the above files may also contain additional files. STATUS
Microsoft has confirmed this to be a problem in SQL Server 6.5.
MORE INFORMATION
You can confirm that the memory leak is occurring by watching the
Windows NT performance counters.
Use Windows NT Performance Monitor to watch the Virtual Bytes counter for
the SQL Server (Sqlservr.exe) and SQL Executive (Sqlexec.exe) processes.
| Modification Type: | Minor | Last Reviewed: | 10/7/2005 |
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| Keywords: | kbBug kbfix kbQFE KB193390 |
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