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6.6

OWA 2003 Hangs - Must restart STORE.EXE on back-end server to fix??  Help???

Asked by rekoss in Microsoft IIS Web Server, Exchange Email Server

Tags: owa, 2003, hangs, exchange

Here's the environment I have:
 
- 2 Exchange 2003 (SP2) servers
- Both running on Windows 2003, SP2
- All in a Windows 2003 AD
- One Exch server has no mailboxes, runs OWA 2003 and is designated as a fornt-end server
- The second Exch server hosts approximately 650 mailboxes
 
This environment has existed since January but on/around May 15st (8 days ago) the front-end OWA server will have the w3wp.exe process run away with 100% of the CPU usage (or close to it)  OWA stops responding for clients.  
 
None of the following get OWA working again:
 
- Manually killing the w3wp.exe process(es)
- Stopping the OWA web site in IIS Manager
- Restarting the front-end (OWA) server
 
In order to get OWA working again (even after the OWA server is restarted) the Information Store must be restarted on the mailbox server (back-end server).  Just dismount and mount the store and then OWA connects no problem.  Lasts about 2 hours and the same thing happens - this has gotten much worse the last couple of days - 4-5 times a day where last week it was only once a day or so.
 
Servers are restarted early each morning and memory is never fully utilized - never more than 1.2 GB or so.  
 
OWA box is dual processor P3 (yeah, yeah) with 2GB of RAM, 4GB will be put in later this week
 
Back-end server is a Dual-core Dell 2950 (dual processor) with 4GB of RAM.
 
Any ideas?  Where to start troubleshooting?
[+][-]05/22/07 03:15 PM, ID: 19138002Expert Comment

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[+][-]05/25/07 10:43 AM, ID: 19158714Expert Comment

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[+][-]05/25/08 06:18 AM, ID: 21642511Accepted Solution

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About this solution

Zones: Microsoft IIS Web Server, Exchange Email Server
Tags: owa, 2003, hangs, exchange
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Solution Provided By: Computer101
Participating Experts: 9
Solution Grade: A
 
 
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