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Q163287: XCON: MTA Events 2200 and 2201

Article: Q163287
Product(s): Microsoft Exchange
Version(s): winnt:4.0,5.0
Operating System(s): 
Keyword(s): kbtshoot kbusage
Last Modified: 22-DEC-1999

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The information in this article applies to:

- Microsoft Exchange Server, versions 4.0, 5.0 
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SUMMARY
=======

Exchange MTA events 2200 and 2201 typically indicate thread conflicts while
trying to lock the 03000002 object. This object contains reference counts for
all other objects. As a result, this object is highly utilized, resulting in
frequent, temporary locking conflicts.

2200 and 2201 events on object 03000002 are not unusual and by themselves do not
indicate a problem requiring further attention.

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

The events are:

  Event ID: 2200
  Source: MSExchangeMTA
  Category: Field Engineering
  Description: An MTA database server error was encountered. [%1 %2 %3 %4
  %5 %6] (6)

  Event ID: 2201
  Source: MSExchangeMTA
  Category: Field Engineering
  Description: An MTA database server error was encountered. [%1 %2 %3 %4
  %5 %6] (6)

Event 2200 means:

  Lock delayed by outstanding reservations
  Trying to lock object %1
  Number of outstanding reservations %2

Event 2201 means:

  Contention on lock call caused delay:
  Trying to lock object %1
  Thread owning lock is %2

Additional query words:

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Keywords          : kbtshoot kbusage 
Technology        : kbExchangeSearch kbExchange500 kbExchange400 kbZNotKeyword2
Version           : winnt:4.0,5.0

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