Method org.postgresql.jdbc4.Jdbc4Connection.isValid(int) is not yet implemented

Question

I am trying to configure dbcp2 with postgres 9.1

When I run my app, it throws exception:

Exception in thread \"main\" org.springframework.jdbc.Cannot         


        

Answer 1

That method is implemented in the current driver version. You must be using an old PgJDBC. Upgrade. It's fully backward compatible. (You should've specified your PgJDBC version in the question).

Separately, though, relying on connection "validation" is usually a bad idea. It's just a way of trying to imperfectly hide a race condition. Simply grab the connection and use it. If there's a problem with it, your application should trap the resulting exception, check the SQLSTATE to see if it's a connection related error, and retry with a new connection.