How to increase BPEL and ESB log level

BPEL Log:
1. Login to BPEL Console
2. Navigate to link Configuration->Logging
3. At the bottom of the page select ‘All’ in ChangeAll combo box.
4. Goto $ORACLE_HOME/opmn/logs and view default_group~<DOMAIN_NAME>~default_group~1.log file.

ESB Log:
1. Login to EnterpriseManager(em) console
2. Click on <CONTAINER_NAME>-> Administration -> Logger Configuration(GoTo Task) -> Root Logger(+)
3. Set oracle.tip.esb.server.common and oracle.tip.esb.server.service to INFO or lower level
4. Goto $ORACLE_HOME/j2ee/< DOMAIN_NAME >/log/ <DOMAIN_NAME>_default_group_1/oc4j and view log.xml