This is an FYI for anyone who is thinking about using drcp. We were having trouble getting our java apps to use the pooled connections, so I opened an SR and asked if drcp could, in fact, support jdbc connections. The answer in a nutshell was No.
I then asked when or if drcp will support jdbc connections. Here is a copy-and-paste of Oracle Support's reply:
"JDBC product management is currently considering adding JDBC support for DRCP. So it is fair to say that in a future release it may happen. No announcements and no time line can be given."
We are planning to use drcp with our php apps, but not our java apps obviously. Just wanted to let folks know this interesting factoid about drcp.