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scelamko
Constraint Violating Yak Guru
309 Posts |
 Posted - 2006-07-12 : 16:25:08
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| guys,I have OLTP database with 30GB in size, there 60 workstations with our application using this database. At sporadic times during peak business hours we get timeouts - 'System.Data.SqlClient.SqlException: Timeout expired'. I have not been able to track down the problem. I have tried to check memory on the server during the day or any processes on the server which I are causing any contention for the resources. But no luck so far...Can you guys advise on the reason behind such sporadic timeouts.Thanks |
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SwePeso
Patron Saint of Lost Yaks
30421 Posts |
Posted - 2006-07-13 : 07:11:43
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| Can be something not related to SQL Server.Is there an automatic defragmentation tool installed on the server?What more than database is the server used for?It could be something related to SQL Server.The timeout can occur due to locking problems.Peter LarssonHelsingborg, Sweden |
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jocampo
Starting Member
48 Posts |
Posted - 2006-07-13 : 08:31:45
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Try to run SQL Server Profiler ... let it run for a few hours ... use T-SQL Profile Duration and catch the info. Analyze then.Did you check the network for bottlenecks? Also, a memory, CPU and disk assestment is a good idea too. But my 1st impression is that it could be a network problem or something in the code (timeout values) We had a similar problem here at work. I found big SELECT * FROM queries running at same time (i found this using SQL Profiler). This was creating too much traffic in the SQL server and active sessions was recieving a time out warning (an app. problem)quote:
Originally posted by scelamko
guys,I have OLTP database with 30GB in size, there 60 workstations with our application using this database. At sporadic times during peak business hours we get timeouts - 'System.Data.SqlClient.SqlException: Timeout expired'. I have not been able to track down the problem. I have tried to check memory on the server during the day or any processes on the server which I are causing any contention for the resources. But no luck so far...Can you guys advise on the reason behind such sporadic timeouts.Thanks
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scelamko
Constraint Violating Yak Guru
309 Posts |
Posted - 2006-07-13 : 08:38:28
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| How can I check on locking, is it locking of the DB objects or locking of the processes during the DML operations |
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jocampo
Starting Member
48 Posts |
Posted - 2006-07-13 : 10:20:34
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Hi.SQL Profiler can be used to monitor and record locking information. You can also use Performance Monitor to monitor lock activity (SQL Server Locks Object counter)quote:
Originally posted by scelamko
How can I check on locking, is it locking of the DB objects or locking of the processes during the DML operations
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SQL Server - Timeouts