We are using the Informix JDBC Driver (2.21) against Informix 9.30 FC6XD DB.

We have recently upgraded to JC6 from JC3 and now see our connection count rising out of control (around 1000 we get connection failures)

Has anyone seen behaviour like this - any ideas?

thanks

Alan

Check the logic in your application.
I am guessing the application never calls close on connection after its done using it. Application may be losing the referenbce to connection object without calling close() on it.

If you don't call close on the connection object you got , the pool will continue to hold a reference to it assuming that its still in use.
And create a new connection every time a new connection request is made.