Sysman password changing in oracle 11g

We may need to change the passwords of different users including sysman as a security measure or for other reason.But after changing the sysman password the enterprise manager console may not work, because we need to update the password using the following setps

step 1. Stop the dbconsole

export ORACLE_UNQNAME=DBNAME
emctl stop dbconsole

step 2. connect as sysdba and change the passowrd of sysman as required

SQL> alter user sysman idntified by XXXXX;

step 3. Update the password

emctl setpasswd dbconlole

step 4. Start the dbconsole

export ORACLE_UNQNAME=DBNAME
emctl start dbconsole


Now the enterprise manager works properly