OAM 11gR2 enabling trace

a- Set oracle.oam TRACE:32:
(The AdminServer of the OAM Domain is running)
->$OAM_ORACLE_HOME/common/bin/wlst.sh
-> wls:/offline>> connect()
(connect to the AdminServer with OAM Administrator credentials)
-> wls> domainRuntime()
-> wls> listLoggers(pattern="oracle.oam.*",target="oam_server1")
-> wls> setLogLevel(target='oam_server1',logger='oracle.oam',level='TRACE:32',persist="1",addLogger=1)
-> wls> exit()