DOCUMENT:Q271600  09-FEB-2001  [exchange]
TITLE   :XCON: In Certain Conditions MTA Erroneously Deletes Data Files
PRODUCT :Microsoft Exchange
PROD/VER::5.5
OPER/SYS:
KEYWORDS:exc55 kbExchange550preSP4fix kbExchange550sp4Fix

======================================================================
-------------------------------------------------------------------------------
The information in this article applies to:

 - Microsoft Exchange Server, version 5.5 
-------------------------------------------------------------------------------


SYMPTOMS
========

Under certain circumstances, the Exchange Server message transfer agent (MTA)
may delete files that are greater than Db007fff.dat files.

This occurs when the total count of the number of .dat files in the Mtadata
folder is greater than 32,767, or when .dat files that are greater than
Db007fff.dat reference the X.400 application programming interface (XAPI) queues
(Internet Mail Service, Microsoft Exchange Connector for Lotus cc:Mail [CCMC],
MS Mail, or Exchange Development Kit [EDK] Connector) or the Work queue (Site
Connector).

This issue only occurs if the MTA is not shut down properly, or if the Mtacheck
utility is run manually against a database that was not shut down properly. If
the MTA is not shut down properly, when the MTA starts, it runs the database
recovery code and erroneously deletes files greater than Db007fff.dat files.

If the Mtacheck utility is run against a database that was not shut down
properly, Mtacheck deletes files that are greater than Db007fff.dat file, and
when the MTA starts, it logs the following events in the Event Viewer
application event log:

 - Event ID: 2171
   Event Type: Warning
   Event Source: MSExchangeMTA
   Event Category: Internal Processing

   Description:
   An MTA database server error was encountered while reading an attribute.
   Called from MTA. Procedure: 423. Database error code: ODXOINIU - Object does
   not exist. Object at fault: [DB######.DAT]. Attribute identifier: 86. Value
   number: 1. Referenced object: 00000000 (00000000 => N/A). Referenced
   object error 0. [DB Server DISP:ROUTER 8 26] (14)

 - Event ID: 2175
   Event Type: Warning
   Event Source: MSExchangeMTA
   Event Category: Internal Processing

   Description:
   An MTA database server error was encountered while an attribute length. Called
   from MTA. Procedure: 429. Database error code: ODXOINIU - Object does not
   exist. Object at fault: [DB######.DAT]. Attribute identifier: 11. Value
   number: 1. Referenced object: 00000000 (00000000 => N/A). Referenced
   object error 0. [DB Server DISP:ROUTER 8 72] (14)

 - Event ID: 2188
   Event Type: Warning
   Event Source: MSExchangeMTA
   Event Category: Internal Processing

   Description:
   An MTA database server error was encountered while deleting an object. Called
   from MTA. Procedure 118. Database error code: ODXOINIU - Object does not
   exist. Object at fault:[DB######.DAT]. [DB Server DISP:ROUTER 8 9]1 118
   ODXOINIU - Object does not exist 06008C86 DB Server DISP:ROUTER 8] (14)

Note that the object at fault in the preceding events does not exist. the object
refers to database file that is greater than Db007fff.dat file.

This issue does not occur with X.400 connectors.

RESOLUTION
==========

To resolve this problem, obtain the latest service pack for Exchange Server 5.5.
For additional information, please see the following article in the Microsoft
Knowledge Base:

   Q191014 XGEN: How to Obtain the latest Exchange Server 5.5 Service Pack



STATUS
======

Microsoft has confirmed this to be a problem in Microsoft Exchange Server
version 5.5. This problem was first corrected in Exchange Server 5.5 Service
Pack 4.


Additional query words: db007fff.dat

======================================================================
Keywords          : exc55 kbExchange550preSP4fix kbExchange550sp4Fix 
Technology        : kbExchangeSearch kbExchange550 kbZNotKeyword2
Version           : :5.5
Issue type        : kbbug
Solution Type     : kbfix

=============================================================================

THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS
PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND.  MICROSOFT DISCLAIMS
ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES
OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  IN NO
EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR
ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL,
CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF
MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGES.  SOME STATES DO NOT ALLOW THE EXCLUSION
OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES
SO THE FOREGOING LIMITATION MAY NOT APPLY.

Copyright Microsoft Corporation 2001.