I have a C# program connecting to a MYSQL database. The stored procedure takes longer than 30 seconds so the connection times out. What I'm looking to do is to increase the alloted time to do the stored procedure to 5 minutes. I know that the default time out is 30 seconds and need to increase the alloted time. Is it possible to do this in C# or do I need to perform less stored procedures?
You can also configure your timeout in your string connection by using Connect Timeout property
Config File : "Data Source=;Initial Catalog=;Connect Timeout=...."
Where you create your sql query command:
command.CommandTimeout = int.MaxValue;
or set int.MaxValue to the timeout of your choice.
Related
I have a windows form application written in C# that passes a query to a SQL Server database and then displays the results in a dataviewgrid. The query that is passed to the database depends on the option selected in the form.
One particular query takes a little over a minute to run in management studio, but timeouts when it is passed to the database from the program. here are the steps I have done to try to resolve the situation:
Added a 5 minute timeout in the program by setting the connection timeout option to 300 seconds in the sql connection string. Example: Data Source=ab;Initial Catalog=abc;User ID=user; Password =pw; Connection Timeout=300
Setting the remote query timeout in the SQL Server instance to 0 (meaning, no timeout). Example: EXEC sp_configure 'remote query timeout', 0 ; GO
Neither of these options work. Despite implementing both of them, the c# program throws back a sql timeout error after less than a minute.
Is there a workaround for this? I have searched for this topic on stack overflow and so far all of the suggestions have been to do either 1 or 2 (which I have done).
For reference, I am using Visual Studio 17 Community edition and SQL Server 2016 Developer edition.
Any help would be greatly appreciated.
Thanks!
There's a "CommandTimeout" property on the SQL command. Try setting that.
Connection timeout and command timeout are two different things.
A connection timeout occurs when a connection cannot be retrieved from the connection pool within the allotted timeout period.
A command timeout occurs when a connection has been retrieved, but the query being executed against it doesn't return results within the allotted command timeout period. The default command timeout period in ADO.NET is 30 seconds.
If you've set the connection timeout to 300 seconds and you're still getting a timeout, it's likely a command timeout. As walkers01 said, set your command timeout to a suitable number of seconds. 300 seconds should be far more than sufficient; if your query executes in one minute in SSMS, a timeout of 90 seconds should suffice.
Try this for unlimited time of query execution if you are using SqlDataAdapter. I have use this one, solved my problem.
SqlDataAdapter dscmd = new SqlDataAdapter(sql, cnn);
dscmd.SelectCommand.CommandTimeout = 0;
I have more than 12k records.
Default configured is 30 sec for connection time out. In this scenario i am getting exception like sql connection time out is closed.
I configured connection time out 0 for executing from c#.
Any disadvantage for set to value is 0.
Please suggest which value is fine for connection timeout. Please keep in mind I have huge data like 12k to 50k.
A value of 0 indicates no limit, and should be avoided in a ConnectionString because an attempt to connect waits indefinitely.
Making connection depends on database,drivers, it is local or remote.
You can not pin point some specific value knowing all these things. value doesn't depends on number of records.
if some problem occur while processing some specific record and it takes too long and you don't want to wait for so long in order to save time. Set CommandTimeout property but it has nothing to do with connection state
In my Windows application, I use SQL Server 2008. My database size is 5086080 KB. Now I get the error as timeout expired when saving a transaction by using a stored procedure. So I set command timeout to 1200. It works fine. But I think it shouldn't because insert data have 2 or 3 lines. Is there any other way to solve this problem?
This is detail error message:
Timeout expired. The timeout period elapsed prior to completion of the operation or the server is not responding .
Timeout is entirely on how long the actual SQL command is likely to take.
For example example, most of our commands run sproc's that should take no longer than 30 seconds to complete, however there are a couple that run for much longer, which means they have their own high valued timeouts.
You'll need to profile how long on average your routine takes then adjust the timeout accordingly, and remember to leave room for variables like latency etc
you need to profile your sql query and your code at every step. only then will you be able to know the exact bottleneck in your program.
Is somebody else keeping a transaction open that is holding up your query? Run sp_who or sp_who2 on the server to see what else is running.
I have 1 store procedure to generate some report, its is very complex so it is taking upto 7-8 mins sometimes to generate output.
When i am trying to access from the Webpage ( C# ) i am getting connection time out error.
I have already set remote connection timeout=0 (unlimited) and in connection string also i have tried to supply connection timeout.
I have suppose 6 Lacs around records of bills and i have performing 6 times around sum based on different groups and different dates, so is there any solution to make it faster.
Or any connection timeout workout?
I think the problem with page request timeout. I suppose you start stored procedure execution right on Page_Load event and after some time IIS close request by timeout.
I'm suggesting to you remove load function from Page_Load event and after page loaded send AJAX request to server or page to start stored procedure execution and check execution result from time to time. When result will be ready you can get it by AJAX and display to user.
Is it really connection timeout that you should be worrying about?
Since you have a long-running command, please ensure that you set CommandTimeout on your SqlCommand to 0.
How can I limit timeout for connecting to Oracle Database? I use devart dotConnect Express Edition on data access layer. I tried add Connection timeout=30; to connection string but it doesn't give right result (even a little weird, first time it really limits to 30 seconds, but not on all connection attempts). Then I find out that
Connection Timeout Time (in seconds) to wait while trying to establish
a connection before terminating the attempt and generating an error. A
value of 0 indicates no limit. The default value is 15 seconds.
Available in Direct mode only.
from Devart site
I can't use direct mode because I use Express Edition. Then I tried to set this parameters in TNSNAMES.ORA
DB1 =
(DESCRIPTION =
(CONNECT_TIMEOUT=11)
(TRANSPORT_CONNECT_TIMEOUT=10)
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = 10.10.100.8)(PORT = 1521)
)
)
(CONNECT_DATA =
(SERVICE_NAME = DB1)
)
)
Still works incorrect. OK, going down and try yo set connection timeout in SQLNET.ORA
SQLNET.INBOUND_CONNECT_TIMEOUT = 5
Another one fail! Does anyone know how can I set timeout restricting allowing time to connect to DB1? It now finishes connection (connection fails) for approximately 20 seconds.
I've never used Devart's dotConnect library, but looking at the OracleConnection class it seems that you should be able to close the connection after a certain period of time by calling OracleConnection.Close(). This should take you out of the blocking state while you're trying to Open the connection.
This is not exactly like setting the timeout, but it may work. Furthermore, check the ConnectionTimeout property when you're debugging this code in order to confirm that the timeout is properly set.
OracleConnection.ConnectionTimeout works in Direct mode only. It is ignored when connection is established via Oracle client, which manages connection in this case.