While login to ENTERPRISE MANAGMENT CONSOLE, I find following messages which says ACCESSIBILITY MODE ----> DISABLED. As a result, I was not able to login to ENTERPRISE MANAGER MAIN PAGE which is mentioned at the bottom mentioned at SIXTH .
First : In order to ENABLE/ACCESSIBLE the ACCESSIBILITY MODE, Login to oracle user and then You need to go to WEB-INF directory. The FULL LOCATION for WEB-INF directory is mentioned below.
[oracle@storage ~]$ echo $ORACLE_HOME
[oracle@storage ~]$ cd $ORACLE_HOME/j2ee/OC4J_EM/applications/em/em/WEB-INF
OR You can directly go to WEB-INF in following way i.e. whichever is convenient for you.
[oracle@storage WEB-INF]$ cd /u01/app/oracle/product/11.2.0/db_1/j2ee/OC4J_EM/applications/em/em/WEB-INF