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Server 2008 x64 becomes unresponsive in the morning

Posted on 2011-03-17
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Last Modified: 2012-08-13
Server info:
Lets call it SQL1
Server 2008 Standard x64
8GB RAM, 2 x Xeon Processors
Mainly used as a SQL Database server.
C:\ is local
D:\ is iSCSI volumes on SAN1 (which holds all the database for SQL 2008)

This server has been becoming unresponsive in the morning (at least once a week) and we have to manually shut it down to get it back and running.
Users are unable to access the server via SQL Server Management Studio when the server becomes unresponsive, but the weird thing is that they also have mapped drives to a share on the same server (SAN1) where the iSCSI volume is stored and they are able to access it. So I'm pretty sure its not the SAN1 causing all these..

When they go to the server (SQL1) and check the monitor, its just frozen and unable to do anything.
I dont see much errors in the event viewer that might be causing this..

Any ideas what to check or what could be causing this.?
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Question by:andrew_transparent
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by:Kyle Abrahams
ID: 35158038
Scheduled job hanging up possibly?
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by:andrew_transparent
ID: 35158156
I've double-checked and confirmed that there are no scheduled jobs running at those times when it becomes unresponsive.
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by:Kyle Abrahams
ID: 35158554
Could be a long-running one that's hanging.  Anything starting after-hours that's not completing?
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by:andrew_transparent
ID: 35158790
no tasks are still running and hung up.
yes, there are tasks running after hours, but are completing properly.
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by:Kyle Abrahams
ID: 35164808
Is SQL in a clustered environment?  Can you do anything with the server itself?  The next time it happens can you terminate the sql service remotely and see if that "wakes it up"?

Anything in the eventvwr under application or system?

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by:andrew_transparent
ID: 35208193
We can't RDC or move the mouse on the server.
It doesn't respond to any actions we try to do..

i found another issue here and they resolved it by disabling the "Offloading" feature of all network cards, i did that last week and thought it had fixed it, but it just froze again this morning and had to power it down manually.

i'll check the logs again.
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by:Kyle Abrahams
ID: 35258475
Any luck with the logs?
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by:andrew_transparent
ID: 35259973
nope nothing in the logs..
we ran the dell extended diagnostics and got no errors.

we checked the bios and noticed that its only set to use 4GB of its 8GB memory.
we have since changed that to use it fully and performance is better than before.

*fingers crossed* and hopefully it doesnt freeze up again.
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andrew_transparent earned 0 total points
ID: 35319428
so it just restarted again this afternoon.
contacting microsoft right now, see what they can find.. :(
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by:andrew_transparent
ID: 35319431
i meant, it froze again and we had to hard reboot the server once again.
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Expert Comment

by:Kyle Abrahams
ID: 35324310
might be a hardware issue.  Do you have physical access to the server?  Would also recommend a RAM test (software).

http://pcsupport.about.com/od/toolsofthetrade/tp/memorytest.htm

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by:andrew_transparent
ID: 35503388
we have contacted microroft for this weird issue.
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