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 Intermittent

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iwin369
Starting Member

13 Posts

Posted - 2010-08-31 : 12:11:25
Hi All,

I tried login to the database server and got “Database Connection Timeout” error. Wondering what exactly the problem with DB.it is occuring once in a while.

And sometimes while connecting to the server through SQL Server enterprise manager I am getting a connectivity error like " Aconnection could not be established to server"
Reason : Time out expired

This seems to be an intermittent/reoccurring issue. We have not observed any issues in the database log till now and work around given till now is the restart of the database server.

Can someone please help

tkizer
Almighty SQL Goddess

38200 Posts

Posted - 2010-08-31 : 12:15:31
Either the SQL Server is too bogged down to service the login request, the client machine is too bogged down, or the network is too bogged down. Do ping tests when this error occurs and see if you've got any network latency. Watch CPU and memory on the database server and the client when the error occurs too.

Tara Kizer
Microsoft MVP for Windows Server System - SQL Server
http://weblogs.sqlteam.com/tarad/

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iwin369
Starting Member

13 Posts

Posted - 2010-08-31 : 12:23:42
hi tkizer,

Thanks for your reply I have done all the checks which you mentioned below everything went fine from my side just wannna find the root cause for this. wanted to find out wht exactly causing it to occur at certain times.Any suggestions please ....
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tkizer
Almighty SQL Goddess

38200 Posts

Posted - 2010-08-31 : 12:24:38
Have your network admin run a sniffer.

Or change your connection timeout to a higher value.

Tara Kizer
Microsoft MVP for Windows Server System - SQL Server
http://weblogs.sqlteam.com/tarad/

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iwin369
Starting Member

13 Posts

Posted - 2010-09-01 : 02:17:49
Hi tkizer,

FYI both the application and the database are residing on the same server and there is no point of network issue.When the user is connecting to the server through the sql enterprise manager he is able to see the following error

" A connection could not be established to server"
Reason : Time out expired

Sometimes they are able to connect successfully to the database and then when they are issuing some queries they agin see the error stating.
Database Connection Timeout” error

As per your suggestion I asked them to change the Connection timeout from 15sec-60sec(Thanx for that).But i need to give some solution the former error mentioned above this.Any more suggestions

Have done the ODBC connectivity check and its going fine.
Sql services running fine
No problem with the port
No Blk by sessions identified
CPU usage less than 30%
No errors found in the error log
All the processors are running fine.

If Any other things to tested please keep posting me...

Many Thanks
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tkizer
Almighty SQL Goddess

38200 Posts

Posted - 2010-09-01 : 13:01:04
How much memory does the server have and how much is SQL configured to use? How much memory does the SQL Server process show as being used when this error happens?

Tara Kizer
Microsoft MVP for Windows Server System - SQL Server
http://weblogs.sqlteam.com/tarad/

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iwin369
Starting Member

13 Posts

Posted - 2010-09-07 : 07:41:27
Hi Tara,

Sorry for the delay.There is no much increase in the memory utilisation.We have raised a Problem ticket for the same issue.It was not yet resolved.Many thanks for your help
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AKA
Starting Member

1 Post

Posted - 2010-09-17 : 23:33:49
Hi friends,
I m working in a Govt. Office. In my office SQL 2000 Server edition is running on server. 3 days back the sql server in service manager automatically got stopped during working and did not restart even after restart the servie and server. Why it happend and what is the solution to this prob. Can any guy help me.

Regards

Anand
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