At the same time as upgrading to Resin 4 we are upgrading to Oracle 11gR2.
Starting/stopping resin was very non-deterministic seeming to hang
sometimes during application startup with references to connection
timeouts in the error logs.
SQLRecoverableException: IO Error: Connection reset
The problem was traced to a drying up of the "entropy poll" preventing
oracle jdbc from allocating connections until the pool was replenished
The following article explains in full
The solution was to add the following to resin.xml
Hope this helps someone.
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