XADM: Store Defrag Fails with Access Violation

ID: Q166629

The information in this article applies to:

Microsoft Exchange Server, version 5.0

SYMPTOMS

When you are defragmenting the Microsoft Exchange Server Information Store and you specify "EDBUTIL /d /ispriv," Microsoft Exchange Server stops responding. An access violation error message similar to the following appears:

EDBUTIL.EXE - Application Error

The instruction at "0x<some-memory-address>" referenced memory at
"0x00000000". The memory could not be written. Click OK to terminate
or CANCEL to debug the application."

In addition, a Drwtsn32.log and User.dmp file are created if Dr. Watson is configured properly as the default system debugger.

CAUSE

While defragmenting the attachments table, even if data to be copied is zero-length, the utility assumes that it has traversed down the tree one level, and so it inappropriately "backs up" one level to continue defragmenting. This can result in the access violation.

STATUS

Microsoft has confirmed this to be a problem in Microsoft Exchange Server version 5.0. This problem was corrected in the latest Microsoft Exchange Server 5.0 U.S. Service Pack. For information on obtaining the service pack, query on the following word in the Microsoft Knowledge Base (without the spaces):

S E R V P A C K

Keywords : kbusage kbbug5.00 XADM kbfix5.00.sp1
Version : 5.0
Platform : WINDOWS
Issue type : kbbug