DOCUMENT:Q255169 10-NOV-2000 [exchange] TITLE :XADM: Multiple Instances of Esefile.exe Causes Computer to Hang PRODUCT :Microsoft Exchange PROD/VER:winnt:5.5 OPER/SYS: KEYWORDS:kbExchange550preSP4fix kbExchange550sp4Fix ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Exchange Server, version 5.5 ------------------------------------------------------------------------------- SYMPTOMS ======== When you run Esefile.exe to checksum an Exchange Server information store and two or more instances of Esefile.exe are run simultaneously on the same computer (for speed and efficiency), the computer may stop responding (hang) until the process is finished. The Esefile process takes up so much CPU time in this configuration that it may seem like the computer is unresponsive. There is no observable activity (this includes keyboard updates, screen refreshes, network connections, and performance monitoring). Although the same issue can occur when you run one instance of Esefile, you can work around this situation by running Esefile at a "low" process priority. However, you cannot use this method to work around issues when you run two instances of Esefile simultaneously. 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. MORE INFORMATION ================ The fix adds some code that slows down the Esefile process. This issue is actually only seen on very fast hardware (very fast multiprocessor computers). With the fix, Esefile runs a bit slower and gives CPU time to other threads if they require it. Additional query words: freeze freezes ====================================================================== Keywords : kbExchange550preSP4fix kbExchange550sp4Fix Technology : kbExchangeSearch kbExchange550 kbZNotKeyword2 Version : winnt: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 2000.