XADM: Backup Checksuming Not Performed on Single Processor Computers (230215)


The information in this article applies to:

  • Microsoft Exchange Server 5.5 SP2
This article was previously published under Q230215

SYMPTOMS

When you attempt to perform an online backup of the Microsoft Exchange directory and information store services on a single processor server, you do not receive any error messages indicating the database failed checksum verification during backup, and the backup process indicates it completed successfully.

RESOLUTION

To resolve this problem, obtain the latest service pack for Exchange Server version 5.5. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

191014 XGEN: How to Obtain the Latest Exchange Server 5.5 Service Pack

The English version of this fix should have the following file attributes or later:

Component: JET

FileNameVersion
Ese.dll5.5.2608.0

STATUS

Microsoft has confirmed that this is a problem in Microsoft Exchange Server version 5.5 Service Pack 2. This problem was first corrected in Exchange Server 5.5 Service Pack 3.

MORE INFORMATION

During the backup process, JET, the underlying database engine for Microsoft Exchange Server, performs a checksum verification of each page read from the database to ensure the health of the database being backed up. This issue indicates that it is possible on single processor computers for Windows NT Backup or other third-party backup utilities to inadvertently back up a corrupted database without warning or errors.

For additional information on the checksum process, please see the following article in the Microsoft Knowledge Base:

151789 XADM: Error -1018 (JET_errReadVerifyFailure)

For additional information on the backup process, please see the following articles in the Microsoft Knowledge Base:

179308 XADM: How To Verify Exchange Online Backups

182903 XADM: ESEUTIL Command Line Parameters

Modification Type:MajorLast Reviewed:11/6/2003
Keywords:EXC55SP3Fix kbbug kbfix kbQFE KB230215
©2003 Microsoft Corporation. All rights reserved.