oam_admin does not come up after upgrade from OAM 11.1.1.7 to 11.1.2
I have used the following link to upgrade OAM from 11.1.1.7 to 11.1.2
https://docs.oracle.com/cd/E52734_01/core/IAMUP/upg_sev_oam.htm#CACIHIIE
After completing all the steps, when I start the Weblogic server, oam_admin is not coming up, tried starting it from admin console as well. Following is the message I see in the log
<Sep 14, 2015 12:29:28 AM PDT> <Error> <oracle.oam.foundation.access> <BEA-000000> <Failed to register mbean Inteface interface oracle.security.am.foundation.mapimpl.coherence.mbeans.OAMCacheStatusMBean and Implementation class oracle.security.am.foundation.mapimpl.coherence.mbeans.impl.OAMCacheStatusMBeanImpl.>
<Sep 14, 2015 12:29:28 AM PDT> <Error> <oracle.oam.foundation.access> <BEA-000000> <Failed to register mbean Inteface interface oracle.security.am.foundation.mapimpl.coherence.mbeans.OAMCacheDistributorStatusMBean and Implementation class oracle.security.am.foundation.mapimpl.coherence.mbeans.impl.OAMCacheRuntimeStatusMBeanImpl.>