Has anyone used OracleConnectionCacheImpl class for Connection Pooling? We are using Oracle 8i database and the thin Driver for Oracle, along with JRun 3.1 for an intranet application. Many times the active size of the cache(i.e. no. of active connections) logs as -1, what can cause this? In fact I think the active size of the cache is displayed wrongly even when it is a positive number (i am logging the size each time i open or close a connection) There is pretty high activity, i.e. connections being opened and closed quite frequently. Can this be the cause? Help!