We've had this problem on Exchange 5.5 running on a Windows 2k box. I think it's an Ex 5.5 problem, and not necessarily related to the underlying OS. The store.exe can spring a memory leak, and slowly, or quickly, run memory and CPU utilization up to 100%. I suggest running an off-line defrag using eseutil. The information store (and related services) will have to be stopped. The command line is eseutil /d /ispriv, and you might need to run it from the exchsvr\bin directory. If there is corruption in the store, it will tell you. Fixing store corruption isn't for the faint of heart, and I strongly recommend getting assistance from Microsoft if that turns out to be the case. Sometimes an off-line defrag can clear up problems such as this, but chances are you'll need to take some further steps as well. If you haven't already run the performance optimizer, I suggest doing that as well, to ensure your registry settings are set appropriately. You can also try re-applying service pack 4. -- Greg Lara ---------------------------------------------------------------------------- --------------------------- This e-mail message may contain privileged, confidential and/or proprietary information intended only for the person(s) named. If you are not the intended recipient, please destroy this message, and any attachments, and notify the sender by return e-mail. If you are not the intended recipient(s), or the employee or agent responsible for delivering the message to the intended recipient(s), you are hereby notified that any dissemination, disclosure or copying of this communication is strictly prohibited. ---------------------------------------------------------------------------- --------------------------- -----Original Message----- From: huanghong [mailto:huanghong@xxxxxxxxxxxxxxx] Sent: Saturday, June 26, 2004 9:34 PM To: [ExchangeList] Subject: [exchangelist] RE: HELP! STORE.EXE Suddenly takes about 99% of CPU http://www.MSExchange.org/ Thanks, David, Yes, Micro Trend SCAN MAIL and Server Protect is installed. If the AV is the problem, why it had been worked fine for more than half an year and suddently the problem popped up? I am now more or less worried about the corrupt of infromation store. Once we had a very similar problem with only difference that the prv.edb increase dramatically in a very shot time and suck up all the disk space. ------------------------------------------------------ List Archives: http://www.webelists.com/cgi/lyris.pl?enter=exchangelist Exchange Newsletters: http://www.msexchange.org/pages/newsletter.asp Exchange FAQ: http://www.msexchange.org/pages/larticle.asp?type=FAQ ------------------------------------------------------ Other Internet Software Marketing Sites: World of Windows Networking: http://www.windowsnetworking.com Leading Network Software Directory: http://www.serverfiles.com No.1 ISA Server Resource Site: http://www.isaserver.org Windows Security Resource Site: http://www.windowsecurity.com/ Network Security Library: http://www.secinf.net/ Windows 2000/NT Fax Solutions: http://www.ntfaxfaq.com ------------------------------------------------------ You are currently subscribed to this MSEXchange.org Discussion List as: glara@xxxxxxx To unsubscribe visit http://www.webelists.com/cgi/lyris.pl?enter=exchangelist