Change OEM Grid Control SYSMAN Password

1. Set the ORACLE_HOME and associated environment variables such as PATH, etc.
$ export ORACLE_HOME=/u01/app/oracle/product/oms10g
$ export PATH=ORACLE_HOME/bin:$ORACLE_HOME/opmn/bin:$PATH

2. Stop the OMS instances that are associated with the repository
$ cd $ORACLE_HOME/opmn/bin
$ opmnctl stopall

3. Log into the OEM Grid Control Repository Database as a DBA user and change the SYSMAN password
$ sqlplus system@oem
SQL> alter user sysman identified by newpassword;
SQL> exit

4. Update the emoms.properties file on each management server host
$ export ORACLE_HOME=/u01/app/oracle/product/oms10g
$ export PATH=ORACLE_HOME/bin:$ORACLE_HOME/opmn/bin:$PATH
$ cd $ORACLE_HOME/sysman/config
$ cp emoms.properties emoms.properties.backup
$ vi emoms.properties file
Change the Following:
oracle.system.eml.mntr.emdRepPwd=new_password oracle.sysman.eml.mntr.emdRepPwdEncrypted=FALSE

** NOTE: When you restart the OMS, the FALSE setting will change to TRUE and the password will become encrypted in the file

5. On the Management Repository host stop the Grid Control Agent
$ export ORACLE_HOME=/01/app/oracle/product/agent10g
$ cd $ORACLE_HOME/bin
$ ./emctl stop agent

6. Update the targets.xml file in the AGENT_HOME/sysman/emd directory and save changes
$ cd $ORACLE_HOME/sysman/emd
$ vi targets.xml

Update the Following
..
Property NAME="password" VALUE="newpassword" ENCRYPTED="FALSE"
..

** NOTE: The TRUE value will change to FALSE and the newpassword will become encrypted when you restart the Agent.

6. Re-Start the Agent
$ cd $ORACLE_HOME/bin
$ ./emctl start agent

7. Set the ORACLE_HOME, etc for the OMS
$ export ORACLE_HOME=/u01/app/oracle/product/oms10g
$ export PATH=ORACLE_HOME/bin:$ORACLE_HOME/opmn/bin:$PATH

8. Re-start each of the OMS's associated with the Grid Control Repository database.
$ cd $ORACLE_HOME/opmn/bin
$ ./opmnctl startall

9. Change the OMS using WEB Browser

http://oel54node1.localdomain:7777/em/console/logon/logon