Microsoft KB Archive/319477

= FIX: Extremely Large Number of User Tables on AWE System May Cause BPool::Map Errors =

Article ID: 319477

Article Last Modified on 11/2/2007

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APPLIES TO


 * Microsoft SQL Server 2000 Developer Edition
 * Microsoft SQL Server 2000 Standard Edition
 * Microsoft SQL Server 2000 Enterprise Edition
 * Microsoft SQL Server 2000 Personal Edition
 * Microsoft SQL Server 2000 Enterprise Edition
 * Microsoft SQL Server 2000 Workgroup Edition
 * Microsoft SQL Server 2000 Desktop Engine (Windows)
 * Microsoft SQL Server 2000 Developer Edition
 * Microsoft SQL Server 2000 Enterprise Edition 64-bit

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This article was previously published under Q319477



BUG #: 356784 (SHILOH_BUGS)



SYMPTOMS
On systems that have a large number of user tables (typically 100000 or more) that are running with Address Windowing Extensions (AWE) turned on, SQL Server may log the following error message in the SQL Server error log:

BPool::Map: no remappable address found.

Error: 17803, Severity 20, State 14

Insufficient memory available

The 17803 error messages may have state numbers other than 14, but the BPool::Map error should always show up first.

There may be additional information in the SQL Server error log similar to: 2002-04-09 15:09:18.82 spid77   Query Memory Manager:  Grants=2 Waiting=0 Maximum=2229 Available=762 2002-04-09 15:09:19.04 spid68   Buffer Distribution:  Stolen=203317 Free=333 Procedures=161 Inram=0 Dirty=16283 Kept=0 I/O=0, Latched=479, Other=450547 2002-04-09 15:09:19.04 spid68   Buffer Counts:  Commited=671120 Target=671120 Hashed=467309 InternalReservation=667 ExternalReservation=1299 Min Free=512 2002-04-09 15:09:19.04 spid68   Procedure Cache:  TotalProcs=36 TotalPages=161 InUsePages=79 2002-04-09 15:09:19.04 spid68   Dynamic Memory Manager:  Stolen=203310 OS Reserved=1664 OS Committed=1635 OS In Use=1599 Query Plan=204 Optimizer=201546 General=2887 Utilities=49 Connection=223 2002-04-09 15:09:19.04 spid68   Global Memory Objects:  Resource=1984 Locks=289 SQLCache=101 Replication=2 LockBytes=2 ServerGlobal=43 Xact=37 NOTE: In this SQL Server error log text, the word &quot;Commited&quot; is a misspelling for the word &quot;Committed.&quot;

In the failure case, the number reported as &quot;Latched&quot; is typically several thousand.



CAUSE
The lazywriter process has an incorrect calculation for determining whether it needs to run and free up infrequently used buffers so that they are available for mapping in AWE buffers.



Service pack information
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 How to obtain the latest SQL Server 2000 service pack

SQL Server 2000 Service Pack 2
The English version of this fix should have the following file attributes or later:   Version      File name

8.00.0594   Sqlservr.exe

SQL Server 2000 Service Pack 3
The English version of this fix should have the following file attributes or later:   Version      File name

8.00.0840   Sqlservr.exe

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



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section.This problem was first corrected in Microsoft SQL Server 2000 Service Pack 4.

Keywords: kbbug kbfix kbqfe kbsqlserv2000presp4fix kbhotfixserver KB319477

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