My C# application is currently throwing lots of the below exceptions:
Timeout expired. The timeout period elapsed prior to completion of
the operation or the server is not responding. This failure occurred
while attempting to connect to the routing destination.
I am using linq queries and NHibernate.
I am having difficulty troubleshooting this as the exception does not occur every time the query is ran. If I take the query and run it directly on SSMS it seems to run very quickly.
The timeout exceptions only appear to occur when ran against one table in the database.
I know I am able to increase the query timeout but I would like to resolve the root cause of the issue. I have a limited knowledge in troubleshooting these issues so what are the next steps I need to take to determine what the problem is?
Increase 'Connect Timeout' of your connection string. 60 is a good number.
Related
I have asp.net web site with sql server data base. One of my table has about 400,000 records. My problem is that whenever I run my qoerys this error thrown in this line:
mySqlDataAdapter.Fill(ds);
Timeout expired. The timeout period elapsed prior to completion of the operation or the server is not responding
What is this error ? is it related to huge records of my table or options of my server.
By the way, my server is localhost.
Is there any one who help me?
It is likely that you need to set the CommandTimeout property
SqlCommand.CommandTimeout Property
However, I would question the size of your dataset if you need to return all 400k records. Perhaps implementing some kind of paging would help reduce the amount of data.
I'm working on asp.net web application, this application interacts with sql server Database through WCF Service. I get the following Exception sometimes but not every time.
System.Data.SqlClient.SqlException (0x80131904): Timeout expired.
The timeout period elapsed prior to completion of the operation or the server is not responding.
This failure occured while attempting to connect to the Principle server.
---> System.ComponentModel.Win32Exception (0x80004005):
The wait operation timed out
I know there are multiple reasons for this. There's a deadlock somewhere or The query is too complex.
At some place I have read that setting CommandTimeout of SqlCommand object can solve this issue.
So before applying this logic I want to know the strong reason of this issue and If there is any other workaround to be done to get rid of this issue please let me know. If I'm missing anything please let me know.
In my application, queries are working fine.
For a single select query, i am getting below error.
System.Data.EntityException: The underlying provider failed on Open.
---> System.Data.SqlClient.SqlException: Connection Timeout Expired. The timeout period elapsed during the post-login phase. The
connection could have timed out while waiting for server to complete
the login process and respond; Or it could have timed out while
attempting to create multiple active connections. The duration spent
while attempting to connect to this server was - [Pre-Login]
initialization=0; handshake=13914; [Login] initialization=0;
authentication=0; [Post-Login] complete=1062; --->
System.ComponentModel.Win32Exception: The wait operation timed out
I have ran sqlprofiler for detecting deadlocks but found none.
I am running simple query through entity framework
Any help would be appreciated
Here in stack overflow, there is a post called Help troubleshooting SqlException: Timeout expired on connection, in a non-load situation. It is a problem very similar to your problem. Please take a look.
I will quote (from that post) a comment as a possible cause of your problem:
"Not Enough Memory"
"You may have 'Auto Close' enabled"
"SQL Agent Jobs may be causing problems"
In that post you can see a very good explanation about the topic.
Maybe you forgot to .Close your connection before.
that's why: Or it could have timed out while attempting to create multiple active connections.
(I cant comment for now due to my reputation, dont take this as a full answer)
This looks like a problem with the Active Directory. Maybe a port is blocked (for example 135), so a timeout occurred.
Logging:System.Data.SqlClient.SqlException: Timeout expired. The
timeout period elapsed prior to completion of the operation or the
server is not responding.
i am a beginner when i saw in the application log files the above is the most frequent error i saw and also it is getting repeated everyday. on the database when i saw time taken for executing the particular procedure which the above function is calling is less than 5 secs.
But in the application we gave connection timeout=200s and by default command timeout=30 secs our manager says we don't have to increase the command timeout by anymore further as it is true. But still the exception is keep coming.
can anyone suggest me any solution so i can get rid of the above problem thanks
The setting in the web config, if it's the timeout in the connection string setting, is the connection timeout. It only applies to the time it takes to make a connection. From your problem description, it doesn't sound like a connection timeout is what's happening.
Command timeouts are specified in other ways. If you are using DataContext, for example, the timeout is set using the CommandTimeout property.
http://msdn.microsoft.com/en-us/library/system.data.linq.datacontext.commandtimeout.aspx
If you can give a code snippet of how you are hitting the database so we can see what classes you are using, more specific recommendations can be made.
In recent times, a particular page in my web app throws the
Exception Details: MySql.Data.MySqlClient.MySqlException: Timeout
expired. The timeout period elapsed prior to completion of the
operation or the server is not responding.
Though I use Ibtais as persistence layer, this error occurs. I have restarted the MySql service instance but stil i get the same error. It didn't happen earlier but happens frequently in recent times.
All the web applications deployed on the server uses Ibatis and the DB server remains on the same machine where IIS is installed. There are about 8000 records in which around 300 to 500 would be filtered on page load
Any insights for the cause of the problem?
I encountered the same problem with yours, and I found this MySQLConnection--Specifying default command timeout. Just add "default command timeout=xxx" into your connectString, this key's value is in seconds.
I tried and it worked for me.
You could set command timeout to 0, its not a good idea though. Some requests could go on indefinitely.
There is an underlying problem that is causing the queries to time out in the first place. Are you inserting, updating, or in any way working with large binary values that would lock the table? That is the most common reason I see for an error like this on such a small amount of data.
Make your connection string look like this:
DotNet Framework:
<add key="MYSQL_CONNECTION_STRING_RDS" value="Uid=userid;Password=pass;
Server=localhost;Port=3306;
Database=dbname;default command timeout=0;SslMode=none"
/>
DotNet Core
"MYSQL_CONNECTION_STRING_RDS": {
"ConnectionString": "Server=localhost;Database=dbname;user=userid;password=pass;default command timeout=0;",
"ServerVersion": "8.0.22"
}