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MS sql 1433

Posted on 2014-03-27
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Last Modified: 2014-08-06
We use fingbox for network remote discovery as well as to alert our team if a host or service goes down. Recently we've been getting alerted multiple times in a day (20 times) that the mssql 1433 port is going down and coming right back up within a few seconds. I've checked all logs and for some strange reason I cannot find anything. Has anyone experienced this type of behavior with that sql port in particular and what they did to resolve it. Sql 2008r2 has all the latest sp's installed as well as the servers is up to date with all patches etc.

Thanks in advance for your help
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Question by:visionsupport
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by:Mark Wills
ID: 39961118
Sounds like a network config problem.

You could try setting “TcpMaxDataRetransmissions" to a higher value.

It is explained in : http://blogs.msdn.com/b/sql_protocols/archive/2006/03/09/546852.aspx

Failing that, might want to download netmon and run some traces / diagnostics, the next link is a bit of a walkthrough as to how they found their TCP/IP problem : https://blogs.msdn.com/b/dataaccesstechnologies/archive/2010/06/18/using-network-trace-to-troubleshoot-intermittent-connectivity-issues.aspx

Failing that, last choice (and maybe hardware guys would say first choice) could be a (network) hardware problem...
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by:TimotiSt
ID: 39962415
What do you test? Just the TCP connection, or login, or even run a query?
Intermittent errors can be DNS issues (forward or reverse).

Tamas
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visionsupport earned 0 total points
ID: 40234326
The problem was a faulty network adapter. Thank you for your responses...
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Author Closing Comment

by:visionsupport
ID: 40243168
It had nothing to do with sql
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