Unable to Start / Connect Enterprise Manager dbconsole

step: localhost_<sid> directory

Go to the location <ORACLE_HOME>\

locate localhost_<sid> directory copy and paste

rename the directory with ipaddress example: 192.168.1.62_mydb1

step:  OC4J_DBConsole directory

Go to the location <ORACLE_HOME\oc4j\j2ee

locate OC4J_DBConsole_localhost_<sid> directory copy and paste

rename the directory with ipaddress example: OC4J_DBConsole_192.168.1.62_mydb1

step: Set the enviornment

ORACLE_SID=MYDB1

ORACLE_UNQNAME=MYDB1

step: Start the emctl dbconsole

emctl start dbconsole

step: open the internet browser

https:\\192.168.1.62:1158\em (or) https:\\192.168.1.62:5500\em\console ( as per your configured port)