Changing Sysman Password in EM 12c

When you want to change sysman user password you cannot just type alter user sysman identified by ... Also you have to update the oms repository.

1. Changing sysman password with sqlplus
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
With the Partitioning, Automatic Storage Management and Real Application Testing options

SQL> alter user sysman identified by sys12345;

User altered.

2. Restart OMS

/home/app/oracle > emctl stop oms
Oracle Enterprise Manager Cloud Control 12c Release 3
Copyright (c) 1996, 2013 Oracle Corporation.  All rights reserved.
Stopping WebTier...
WebTier Successfully Stopped
Stopping Oracle Management Server...
Oracle Management Server Successfully Stopped
Oracle Management Server is Down
[emprd01@nlprdora02]:/home/app/oracle > emctl start oms
Oracle Enterprise Manager Cloud Control 12c Release 3
Copyright (c) 1996, 2013 Oracle Corporation.  All rights reserved.
Starting Oracle Management Server...

Starting WebTier...
WebTier Successfully Started
Oracle Management Server is not functioning because of the following reason:
Connection to the repository failed. Verify that the repository connection information provided is correct.
Check EM Server log file for details: /home/app/middleware/oms12c/gc_inst/user_projects/domains/GCDomain/servers/EMGC_OMS1/logs/EMGC_OMS1.out

3. What will you see in the log file:

Fetched repository credentials from Credential Store
Fetched repository credentials from Credential Store
Invalid Connection Pool. ERROR = ORA-01017: invalid username/password; logon denied

4.  Update OMS repository with new sysman password

/home/app/oracle > emctl config oms -change_repos_pwd -use_sys_pwd -sys_pwd sys12345 -new_pwd sys12345

Oracle Enterprise Manager Cloud Control 12c Release 3
Copyright (c) 1996, 2013 Oracle Corporation.  All rights reserved.

Changing passwords in backend ...
Passwords changed in backend successfully.
Updating repository password in Credential Store...
Successfully updated Repository password in Credential Store.
Restart all the OMSs using 'emctl stop oms -all' and 'emctl start oms'.
Successfully changed repository password.


/home/app/oracle > emctl stop oms -all -force
Oracle Enterprise Manager Cloud Control 12c Release 3
Copyright (c) 1996, 2013 Oracle Corporation.  All rights reserved.
Stopping WebTier...
WebTier Successfully Stopped
Stopping Oracle Management Server...
Oracle Management Server Already Stopped
AdminServer Successfully Stopped
Oracle Management Server is Down

/home/app/oracle > emctl start oms
Oracle Enterprise Manager Cloud Control 12c Release 3
Copyright (c) 1996, 2013 Oracle Corporation.  All rights reserved.
Starting Oracle Management Server...
3Starting WebTier...
WebTier Successfully Started
Oracle Management Server Successfully Started
Oracle Management Server is Up