![]() ![]() ' I am pretty sure this does not accomplish exactly what you think. Hi Ray, I was interested in your reply to Rahul's post: I prefer to leave my SSMS connections open while I am working so I don't have to continually reconnect.Ĭonnection options are generally controlled and set on a per session, per connection basis. So while it will close "my" connections it will not close the myriad connections from the various applications, ETL, users, etc. It is a client side setting and does not apply to the server. The check box "Disconnect after the query executes" in the SSMS dialog only applies to SSMS connections opened under the particular profile. I think if the tip would have been titled "Disconnecting SQL Server Connections after Query Execution from SSMS", it would have been more clearer. Nowhere in the tip it says that application queries will be disconnected. The entire context of the query execution and disconnecting the connection is limited to the scope of SSMS. By application wide, it means "SSMS" as an application, and not client applications that consume data from SQL Server. I think you have mis-interpreted the meaning of "application wide setting". Thanks for taking the time to put together the post and thanks for the followup. ) implement some form of connection pooling. ![]() That is why most providers (e.g., SQLNCLI, ODBC, ADO.Net. The connection set up and tear down is much more resource intensive than just maintaining the connection. I don't want them connecting and disconnecting from the server 100's of times per minute. Some of them run more than 100 queries per minute. I have many applications and services connected to my databases. This is true but it is a very local and limited improvement. " One can restrict the SQL Server resource utilization by disconnecting queries post execution with a simple change which is implemented in SQL Server Management Studio. However, I think some of the statements in your post might lead newbies to think they are setting a server wide option rather than an SSMS option.Īfter mentioning thousands of user connections you say I understand how the SSMS option works and I am sure you do also. If set up, then for every new query a new connection has to be established and that's not better than re-using the old session.Īfter some time a session not being used, sql server marks that session with a suspended status and it's not eating any cpu time. However, if I am working in SSMS in an ad-hoc or develoopment mode, disconnecting from the database is not a performance improvement for the server or the client.ĭevelopers usually use one session for multiple quering, so this option is even not good to be set up and use. ![]() So, you don't want to keep them just because you may want to use it in the next hour. Maintaining connections is a good, performant thing.except on a production server with a LOT of activity.Įach database connection takes about 1meg of ram on the database server. How is this supposed to improve performance?īy disconnecting from the server after the query executes, when I wish to run another query, I have to wait for a new connection to be established. Thanks for taking the time to write this tip. While establishing connection I am getting this error (Cannot establish a connection to jdbc:mysql:localhost:3306/mysql?zeroDateTimeBehaviour=convertToNull using connection) ![]() I am not able to connect my sql server with netbean. Can you please share pros and cons to enable the settings "Disconnect after the query executes" ![]()
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