Hi, Thanks for the answers before. But i still have the same problem. i don't know why. i have put jdbc7.0-1.2.jar in /opt/IBMJava2-13/jre/ext and /opt/IBMJava2-13/jre/lib already and put them in the CLASSPATH=$CLASSPATH:/opt/IBMJava2-13/jre/ext/jdbc7.0-1.2.jar I also have put PATH=$PATH:/opt/IBMJava2-13/bin I find it very strange, i was able to create the tables using the same JDBCObjectPool during installation of my application, but in my servlet, when accessing the DB, i got an No Suitable Driver. very strange behavior. what could be the problem? jackson