When should I close MySQL connection?

Is it necessary to close MySQL connection?

If your script has a fair amount of processing to perform after fetching the result and has retrieved the full result set, you definitely should close the connection. If you don’t, there’s a chance the MySQL server will reach it’s connection limit when the web server is under heavy usage.

When should I close database connection?

Any new connection you establish that has exactly the same connection string will be able to reuse the connection from the pool. We strongly recommend that you always close the connection when you are finished using it so that the connection will be returned to the pool.

What happens if I dont close MySQL connection?

If you don’t exit() right after, the rest of your script will continue running. When the script does finish running, it will close off all open connections (or release them back to the pool if you’re using persistent connections).

How long can a MySQL connection stay open?

1 Answer. mysqld will timeout database connections based on two server options: Both are 28,800 seconds (8 hours) by default. If your connections are persistent (opened via mysql_pconnect ) you could lower these numbers to something reasonable like 600 (10 minutes) or even 60 (1 minute).

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Is it important to close DB connection?

For the purpose of safe coding, you should always close database connections explicitly to make sure that the code was able to close itself gracefully and to prevent any other objects from reusing the same connection after you are done with it.

Is it necessary to close connection?

2 Answers. No, they wouldn’t be closed. If getConnection() creates a new Connection, then the only thing that will happen at the end of the method is that the Connection could be garbage collected.

What happens if you don’t close database connection?

2 Answers. If we don’t close the connection, it will lead to connection memory leakage. Unless/until application server/web server is shut down, connection will remain activate even though the user logs out.

How do I close a database connection?

To close the connection in mysql database we use php function conn->close() which disconnect from database. Syntax: conn->close(); Program: To illustrate the closing of connection in object-oriented procedure.

Should I close DB connection after every query?

Connections can die. You need a database connection wrapper that can determine whether connection is established and if not – establish one. The same wrapper should take care of disconnect/reconnect. In other words, do not close the connection.

Does using block close connection?

Yes. When the using block ends, the connection automatically closes (That is what IDisposable is for).

Do we need to close connection in connection pool?

Yes, certainly you need to close the pooled connection as well. It’s actually a wrapper around the actual connection. It wil under the covers release the actual connection back to the pool.

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Is it mandate to close statement object in DB code?

Absolutely. It’s possible that the Statement implementation will have other resources which should be released, or have some other relationship with the connection.