You can enable Pool Manager tracing by calling setTracing(true) on the PooledConnectionDataSource connection. To disable logging, call setTracing(false).
By default, the DataDirect Connection Pool Manager logs its pool activities to the standard output System.out. You can change where the Pool Manager trace information is written by calling the setLogWriter() method on the PooledConnectionDataSource connection.
See "Troubleshooting Connection Pooling" for information about using a Pool Manager trace file for troubleshooting.