Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Please briefly explain why you feel this question should be reported.
Please briefly explain why you feel this answer should be reported.
Please briefly explain why you feel this user should be reported.
I am going to configure c3Po configuration for connection pooling. what does below properties mean?
preferredTestQuery : query to test the connection
testConnectionOnCheckin : above query is executed when connection is returned back to pool
testConnectionOnCheckout : above query is executed when connection is taken from pool
idleConnectionTestPeriod :
is my understanding correct?
Thanks!
Those settings control how C3P0 tests connections for timeouts. I normally use “SELECT 1;” for testing a MySQL connection, for example. There are other ways to test the connections, and some of the choices have performance implications, so I would recommend reading the documentation which is available here: http://www.mchange.com/projects/c3p0/index.html#configuring_connection_testing