Enterprise manager Configuration

1- make sure you have static IP also add it to hosts file

2-  Login as sysdba and follow the steps :

SQL> SHUTDOWN IMMEDIATE;

SQL> STARTUP RESTRICT;

SQL> EXEC sysman.emd_maintenance.remove_em_dbms_jobs;

SQL> EXEC sysman.setEMUserContext('',5);

SQL> REVOKE dba FROM sysman;

SQL> DECLARE

    CURSOR c1 IS

      SELECT owner, synonym_name name

      FROM dba_synonyms

      WHERE table_owner = 'SYSMAN';

BEGIN

    FOR r1 IN c1

    LOOP

        IF r1.owner = 'PUBLIC' THEN

            EXECUTE IMMEDIATE 'DROP PUBLIC SYNONYM '||r1.name;

        ELSE

            EXECUTE IMMEDIATE 'DROP SYNONYM '||r1.owner||'.'||r1.name;

        END IF;

    END LOOP;

END;

/

SQL> DROP USER mgmt_view CASCADE;

SQL> DROP ROLE mgmt_user;

SQL> DROP USER sysman CASCADE;

SQL> ALTER SYSTEM DISABLE RESTRICTED SESSION;

3-  Make sure var -à path is oracle home

4-  Make sure sqlnet.ora has (NTS)

5-  Run : emca -repos drop

: emca -deconfig dbcontrol db ( -cluster for RAC)

6-  Run : emca -repos create

: emca -config dbcontrol db ( -cluster for RAC)

8-  Cmd> emctl start dbconsole

9-  login from web browser : https://hostname or IP:1158/em/console/aboutApplication

or https://hostname or IP:1158/em/console/logon/logon