DOCUMENT:Q163287  22-DEC-1999  [exchange]
TITLE   :XCON: MTA Events 2200 and 2201
PRODUCT :Microsoft Exchange
PROD/VER:winnt:4.0,5.0
OPER/SYS:
KEYWORDS:kbtshoot kbusage

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The information in this article applies to:

 - Microsoft Exchange Server, versions 4.0, 5.0 
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SUMMARY
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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
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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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