Using ADO.NET and SQL Server 2008.
The SqlCommand's CommandTimeout property was not changed, so it has the default value of 30.
The application runs some dozens command and logs the result (or exception) to an SQL table, so i know the start time of each execution. The start time of the next log record gives me an estimate of the duration.
I got two exception that don't make sense, because their duration is much smaller than the defined CommandTimeout.
This happend randomly. It's not reproducible.
Timeout expired. The timeout period elapsed prior to completion of the operation or the server is not responding.
My question is: can this exception be raised by other causes than and actual timeout?
It was probably related with some lock in participating tables.
Related
In SQL Server Management Studio, I discovered an issue while attempting to disable a trigger on one of our tables in our Azure SQL Database, which is set at one of the highest-available performance tiers (Business Critical Gen 5). I used right-click disable to accomplish this. I receive the following error after the timeout period expires:
Execution Timeout Expired. The timeout period elapsed prior to completion of the operation or the server is not responding. (.Net SqlClient Data Provider)
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For help, click: http://go.microsoft.com/fwlink?ProdName=Microsoft%20SQL%20Server&ProdVer=12.00.0700&EvtSrc=MSSQLServer&EvtID=-2&LinkId=20476
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Server Name: searchfoundry.database.windows.net
Error Number: -2
Severity: 11
State: 0
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Program Location:
at Microsoft.SqlServer.Management.Common.ConnectionManager.ExecuteTSql(ExecuteTSqlAction action, Object execObject, DataSet fillDataSet, Boolean catchException)
at Microsoft.SqlServer.Management.Common.ServerConnection.ExecuteNonQuery(String sqlCommand, ExecutionTypes executionType, Boolean retry)
The wait operation timed out
The help link goes to a 404 - no surprise there.
EDIT #1:
#DanGuzman kindly assisted me in suggesting I run the disable trigger as T-SQL. This worked. However, in between the time I originally posted, and the time he gave his suggestion, I discovered that this timeout error is occurring within other areas of our infrastructure/services which use this database.
I have run a query to check for blocking sessions on this database. There are none listed. I have also increased the timeout period from 30 seconds to 5 minutes. Items are still timing out.
I am looking for guidance on what other queries I can run to look under the hood of this database to determine what is causing these timeouts to occur.
I'd be happy to just restart the SQL Server to resolve this, but as many of us know, there is no restarting Azure SQL Servers, unfortunately.
Increasing the DTUs works for me.
I had fixed similar timeout issues by increasing the DTU quota of the DB
I have a SQL Server Agent Job with one step. The step executes a stored procedure on the local server, and nothing more. When the job executes (either manually or scheduled), I receive the following error. The job fails after about 23 seconds.
Msg 121, Level 20, State 0, Line 0 A transport-level error has
occurred when receiving results from the server. (provider: TCP
Provider, error: 0 - The semaphore timeout period has expired.)
However, I have no problem executing the stored procedure manually. I receive the proper results in less than a second.
The 'semaphore' error tends to be a hardware or network issue. But since the job is executing on the local server, I am unclear how hardware or network latency could be an issue.
UPDATE (things I've tried)
After each of these attempts, I put everything back to its original state. Each of these attempts has the same results (works when I RDP to the server, fails everywhere else).
The underlying stored procedure calls out to a linked-server. I removed these references.
Assuming the problem is some kind of call out to the AD domain-controller, I used a SQL Login instead of a Windows User.
I modified the job to run as me (since I can do everything).
Another note: When executing, the job fails to start. So, it's not even getting to the stored procedure.
I would approach this problem by following below steps...
1.Ensure Query is finetuned
2.Ensure stats and indexes are upto date
Semaphore time outs mostly relate to insufficient memory in the system..So updating stats will help sql server in getting memory estimates right..and this should solve most of timeouts
But since the job is executing on the local server
I assume you meant ,you are running job in same box as of server..not remotely..even in this cases ,we faced time outs(general),but we ruled out hardware and network issues through below steps
TCP Offloading/Chimney & RSS…What is it and should I disable it?
changed Remote Login,Remote query time outs(these may not be applicable to your error message)
all
I am trying to resolve issue. where situation is,
There is asp.net webservice. webservice is connected with the sql server. created for receiving the data. but while requesting to the webmethod, even in browser i am getting exception :
System.Data.SqlClient.SqlException: Timeout expired. The timeout period elapsed prior to completion of the operation or the server is not responding.
AS per my understanding this must be issue about delaying in response from the server.Or due to time complexity in data fetching process in the method. I know we can specify the timeout for the sql command. but I don't have code access to change it. in short it is out of my scope to make change int he webservice code. how can i resolve this issue without editing any code. I can edit the web.config of webservice. but not code. please guide me.
Edited:
This issue is still there. but I am getting this issue on test server only. but on production server, it is running perfectly. I want to simulate this and want to resolve it on test server. because of this i am unable to proceed for next operation which is not present on the production server. why should this arriving here (on test server).
On test server i am changing the sql server name.
Because of this difference, we can conclude it should not be the issue in code. it must be issue /somewhere need setting in database side to define timeout or may be different . please guide me for the same.
You're gonna have to get someone who can change the code, increase the CommandTimeout (or set it to 0 for unlimited), and, more importantly, find out why the query takes so long.
If we set the timeout value to zero that means we are making sure that the operating will competed at any cost.
I am trying to take the tfs back up. But its getting failed .
I will add the exception details here from the log file generated .
[Error #12:41:51.187] Microsoft.SqlServer.Management.Smo.FailedOperationException: Backup failed for Server 'sampledb-tfs-ser'. ---> Microsoft.SqlServer.Management.Common.ExecutionFailureException: An exception occurred while executing a Transact-SQL statement or batch. ---> System.Data.SqlClient.SqlException: Timeout expired. The timeout period elapsed prior to completion of the operation or the server is not responding.
at Microsoft.SqlServer.Management.Common.ConnectionManager.ExecuteTSql(ExecuteTSqlAction action, Object execObject, DataSet fillDataSet, Boolean catchException)
I know server is timing out . is der any way to increase the time out or any other way in which this problem could be solved ..?
Can any one help please ...?
Looks like you're using some sort of programming language (C#, powershell, etc) to do this. You're going to have to set the query timeout for your connection to 0 to let the program wait indefinitely for the backup to finish. How you go about doing that depends on the language, The ServerConnection class has a property called StatementTimeout. Set that to 0 and you should be good to go.
On your TFS APPTier server, in file
C:\ProgramData\Microsoft\Team Foundation\Server Configuration\ConfigPT.xml
, try changing the value of property
<SqlStatementTimeoutInSeconds>21600</SqlStatementTimeoutInSeconds>
Try 12 hours (43200) instead. That solved the problem for me.
This file is the result of executing the TFS backup plan in the "Team Foundation Administration Console". Therefore you may have to change that value everytime after re-executing the TFS backup plan.
I'm attempting to populate a DB on my local SQL2008 Server using a Data Generation Plan. However, when I run it I get:
Data generation failed because of the following exception: Timeout expired. The timeout period elapsed prior to completion of the operation or the server is not responding.. occurred 1 time(s).
I've tried setting the Connection timeout setting in the Advanced connection properties to 120 instead of 15, but I still get the error.
How do I fix this problem?
There are roughly 40 tables involved and about 20 of those are getting 100 rows inserted while, 10 tables ~1000 rows and the rest less than 100 rows. Also, when I exclude the trouble table the script completes successfully.
Thanks!
Go to Tools menu > Options > Database Tools > Data Generator > SQL Timeout
You may have to restart Visual Studio for the change to take effect, at least I had to.
There are also other timeout values that can be configured via the Registry (QueryTimeoutSeconds, LongRunningQueryTimeoutSeoncds, LockTimeoutSeconds) though I don't understand the difference. See here.