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IIS Server getting Hanged

Posted on 2010-08-26
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Last Modified: 2012-05-10
Hi Experts,

Since iam facing a big issues for a long time and unable to resolve this.

In my enviroment we have configured one MS exchange 2003 Front end server and 20 exchange Backend servers.
Currently 150 users configured to use RPC over Http/s facility.
Every 3 days my exchange front end server IIS server got hanged
for resolution If we restart the IIS admin service on exchange front end server then also the OWA will not be accessible and last we want to restart the server, if we restart the server then it's working properly.
Kindly help in this to resolve the issue.

Thanks in Advance

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Question by:sobitharaj
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20 Comments
 
LVL 7

Expert Comment

by:supports
ID: 33539218
do you get any event errors or does the IIS logs points out any issue....
0
 
LVL 3

Author Comment

by:sobitharaj
ID: 33539448
There is no error/warning events recorded for this issue on event viewer.
This is the reason iam unable to find any solution
0
 
LVL 6

Expert Comment

by:CorpComp
ID: 33539699
Is the IIS service consuming large amounts of Memory or CPU time when it hangs?

It might be useful to snap some key performance counters on the IIS service from the next time you restart it until it next crashes.

Here is a link to a bunch of useful counters for monitoring IIS.  Setup perfmon to take a snap every 1 hour on a pile of the key counters in this article and then retrieve the counter after the crash to see what has changed unexpectedly from normal activity.
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LVL 3

Author Comment

by:sobitharaj
ID: 33540025
My server is normal, when the IIS server getting hang.
As per MS article i have checked the scalability of requests for RPC over Http/s.
now i need to start perfom monitor on this server.

Kindly assist which counters i need to add and monitor on this..

Thanks
Sobitharaj.S
0
 
LVL 31

Expert Comment

by:MegaNuk3
ID: 33540290
Run the Exchange Best Practice Analyser (Exchange 2003 version):
http://www.microsoft.com/downloads/details.aspx?displaylang=en&FamilyID=dbab201f-4bee-4943-ac22-e2ddbd258df3

ExBPA will highlight any misconfiguration on there that you should resolve before doing any further troubleshooting.
0
 
LVL 3

Author Comment

by:sobitharaj
ID: 33541309
After running EXBPA, I got the below errors, whether it will be the impact for IIS crash???
1. Free page table entries (PTE) on server abc.com is at the critical threshold. System instability may occur. Current free PTE count: 3582.
2. Exchange server abc.com has more than 4 GB of memory. To avoid severe kernel memory depletion, limit or remove physical memory. Memory count is 7991 MB.

Please guide me.
0
 
LVL 31

Expert Comment

by:MegaNuk3
ID: 33541388
Exchange 2003 won't see or use anything above 4Gb or RAM so you might as well remove the extra RAM as system page table entries will be allocated to address RAM.

It is Exchange 2003 enterprise what OS is it running on? Windows 2003 standard or Enterprise.

I'd remove RAM till you are down to 4Gb and then see what happens with the server stability and free PTEs...
0
 
LVL 31

Expert Comment

by:MegaNuk3
ID: 33541406
Hot Swap memory also eats PTEs.

Can you see if the below key exists:
HKLM\System\CurrentControlSet\Control\Session Manager\Memory Management\DynamicMemory (REG_DWORD) 1

If it doesn't exist then consider adding it as this will turn off hot swap memory support from an OS level.

As per: http://msexchangeteam.com/archive/2005/12/14/416065.aspx
0
 
LVL 31

Expert Comment

by:MegaNuk3
ID: 33541427
Or instead of removing memory you can use BURNMEMORY in your boot.ini file:
use /BURNMEMORY=4096

as per http://technet.microsoft.com/en-us/library/aa997419(EXCHG.80).aspx
0
 
LVL 3

Assisted Solution

by:sobitharaj
sobitharaj earned 0 total points
ID: 33542896
After adding this /BURNMEMORY=4096 in boot.ini file system is not entering into windows.

OS: Windows 2003 Enterprise Server
RAM: 8GB
What could be the issue.

0
 
LVL 31

Expert Comment

by:MegaNuk3
ID: 33542908
Is the server not booting up at all now?
0
 
LVL 3

Author Comment

by:sobitharaj
ID: 33548353
After adding this switch and rebooted the server, it's not entering into windows.
Please assist what could be the reason and why??
0
 
LVL 31

Expert Comment

by:MegaNuk3
ID: 33548950
Boot off a floppy and then remove the burnmemory switch after that reboot and confirm windows starts properly again.

Then paste your boot.ini here
0
 
LVL 3

Author Comment

by:sobitharaj
ID: 33555729
I have deleted the boot.ini file, now the server working fine.

This is the old file after adding /BURNMEMORY
[boot loader]
timeout=0
default=multi(0)disk(0)rdisk(0)partition(1)\WINDOWS
[operating systems]
multi(0)disk(0)rdisk(0)partition(1)\WINDOWS="Windows Server 2003, Enterprise" /fastdetect /NoExecute=OptOut /BURNMEMORY=4096
0
 
LVL 31

Expert Comment

by:MegaNuk3
ID: 33566014
Have you thought about removing 4gb of RAM from the server to make EXBPA happy? And then see how stable the server is?
0
 
LVL 3

Accepted Solution

by:
sobitharaj earned 0 total points
ID: 33698810
Thanks for your Help On This.
0
 
LVL 31

Expert Comment

by:MegaNuk3
ID: 33821052
Have you resolved the issue?
0
 
LVL 31

Expert Comment

by:MegaNuk3
ID: 33858093
Thanks for our help, but no points?

Is the server running fine now?
0
 
LVL 3

Author Comment

by:sobitharaj
ID: 33866325
Iam unable to assign points, question closed automatically due to inactivity.
Anyway great thanks, I have to reinstall the server.
0
 
LVL 31

Expert Comment

by:MegaNuk3
ID: 33866605
Ok

Did you remove 4gb of RAM in the end?
0

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