How good is Oracle Universal Connection Pool (UCP)

Question

Does anybody have experience with using Oracle UCP under real production load? Does it handle database reconnects well? Are there any multi-threading issues? Has anybody com

Answer 1

I have just tried UCP with our Eclipse Link based application and I run into ORA-0100: Maximum open cursors exceeded every time. I have set the parameter MaxStatements to 10 but that had no effect. I have inspected the Heap and there were hundreds of T4CPreparedStatement objects alive but less than 10 wrapped statements. So there is a huge statement cache somewhere that I can not control.

Tomcat jdbc pool works like a charm.