Hi Johan, We have had similar problems with Hibernate. One of our java developers found out that the connection pool itself is able to detect if the connections are dead and can be reconnected when necessary. It is an option built into the connection pool java object or something (not a Java developer myself). If the developer here can find that option, your developer must be able to find that as well. Google is his/her friend ;-) Maybe it is even a good aspect of java? Regards, Eric. _____ Van: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] Namens Johan Eriksson Verzonden: dinsdag 23 mei 2006 16:17 Aan: oracle-l@xxxxxxxxxxxxx Onderwerp: detect connection problems Hi all A developer asked me a question I couldn't give any answer to. Our application connect through a connection pool (hibernate) to the database and the application should shut down if it can't create a connection to db or if the connection is lost, all other failures should not shut down but just give the error. How could you catch only these messages? To figure out all possible ora errors and have logic for these doesn't seem like a good idea. Anyone that has done something similiar? /Johan