DOCUMENT:Q288166  08-MAY-2002  [exchange]
TITLE   :XCON: MTA Stops Delivering from Certain Queues After Event 2187
PRODUCT :Microsoft Exchange
PROD/VER::5.5 SP4
OPER/SYS:
KEYWORDS:kbExchange550preSP5fix

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

 - Microsoft Exchange Server, version 5.5 SP4 
-------------------------------------------------------------------------------

SYMPTOMS
========

The Exchange Server 5.5 message transfer agent (MTA) may stop transferring
messages over some or all connectors that are accessed by the local MTA.

The MTA generates 2187 events:

   An MTA database server error was encountered while attempting to unlock an
   object which is not locked. Called from MTA. Procedure 155. Object at fault:
   08XXXXXX. [DB Server OPERATOR 20 58] (14)

CAUSE
=====

The MTA is experiencing a problem with a gateway delivery thread. The problem is
a result of the deletion of resources that are used internally by the MTA after
a site is deleted.

RESOLUTION
==========

A supported fix is now available from Microsoft, but it is only intended to
correct the problem described in this article and should be applied only to
systems experiencing this specific problem. This fix may receive additional
testing at a later time, to further ensure product quality. Therefore, if you
are not severely affected by this problem, Microsoft recommends that you wait
for the next Microsoft Exchange Server 5.5 service pack that contains this fix.

To resolve this problem immediately, contact Microsoft Product Support Services
to obtain the fix. For a complete list of Microsoft Product Support Services
phone numbers and information about support costs, please go to the following
address on the World Wide Web:

   http://support.microsoft.com/default.aspx?scid=fh;EN-US;CNTACTMS

NOTE: In special cases, charges that are normally incurred for support calls may
be canceled, if a Microsoft Support Professional determines that a specific
update will resolve your problem. Normal support costs will apply to additional
support questions and issues that do not qualify for the specific update in
question.

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

Component: MTA

+----------------------------+
| File name    | Version     | 
+----------------------------+
| Dbserver.sch | 5.5.2654.59 | 
+----------------------------+
| Dcprods.cat  | 5.5.2654.59 | 
+----------------------------+
| Emsmta.exe   | 5.5.2654.59 | 
+----------------------------+
| Ems_rid.dll  | 5.5.2654.59 | 
+----------------------------+
| Mtacheck.exe | 5.5.2654.59 | 
+----------------------------+
| Infoplog.cfg | 5.5.2654.59 | 
+----------------------------+
| Mtamsg.dll   | 5.5.2654.59 | 
+----------------------------+
| Mtaperf.dll  | 5.5.2654.59 | 
+----------------------------+
| P42.tpl      | 5.5.2654.59 | 
+----------------------------+
| P772.tpl     | 5.5.2654.59 | 
+----------------------------+
| P2.xv2       | 5.5.2654.59 | 
+----------------------------+
| X400om.dll   | 5.5.2654.59 | 
+----------------------------+

NOTE: Because of file dependencies, this hotfix requires Microsoft Exchange
Server version 5.5 Service Pack 4.



WORKAROUND
==========

To work around the problem, restart the MTA.

STATUS
======

Microsoft has confirmed this to be a problem in Microsoft Exchange Server
version 5.5.

MORE INFORMATION
================

The problem was only reproduced after multiple sites were deleted.

Additional query words: stall backup queued

======================================================================
Keywords          : kbExchange550preSP5fix 
Technology        : kbExchangeSearch kbZNotKeyword2 kbExchange550SP4
Version           : :5.5 SP4
Issue type        : kbbug
Solution Type     : kbfix

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

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