FIX: Subquery That Returns One Row May Cause CPU Spin and Excessive Optimizer Memory Usage (323213)

SYMPTOMS

A query that includes a subquery that will return one row at most, may:

Experience a CPU spin.

-and-
Consume excessive optimizer memory during query compilation.

Because the loop occurs during query optimization, this problem occurs even if the query is run after execution of this statement:

SET SHOWPLAN_TEXT ON

Eventually, the query may fail with this 701 error:

Server: Msg 701, Level 17, State 1, Line 1 There is insufficient system memory to run this query.

RESOLUTION

To resolve this problem, obtain the latest service pack for Microsoft SQL Server 2000. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

290211 INF: How To Obtain the Latest SQL Server 2000 Service Pack

NOTE: The following hotfix was created before the release of Microsoft SQL Server 2000 Service Pack 3.

The English version of this fix has the file attributes (or later) that are listed in the following table. The dates and times for these files are listed in coordinated universal time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.

   Date          Time    Version         Size              File name
   ---------------------------------------------------------------------

   17-May-2002   16:44   2000.80.629.0   7,454,804 bytes   Sqlservr.exe

NOTE: Because of file dependencies, the most recent hotfix or feature that contains the files may also contain additional files.

FIX: Subquery That Returns One Row May Cause CPU Spin and Excessive Optimizer Memory Usage (323213)

SYMPTOMS

RESOLUTION

STATUS