OIM11gR2 Setting a specific user as a system administrator

Technique to set a user OIMADMIN to have the same access as XELSYSADM.
OIMADMIN is just an example.

Step 1: Set the user's USR_TYPE to "End-User Administrator"

update usr set usr_type='End-User Administrator' where usr_login='OIMADMIN';
commit;

Step 2: Add the user to the System Administrators "Admin Role"

In the Identity Webapp, logged in as xelsysadm, navigate to Organizations and search on the organization called "Top".
The first role in the Top organization is System Administrators.  Select it.
Explicitly add the OIMADMIN user to this role by direct assignment using the dialog provided.

Be sure to check the sub-orgs and Apply

That is it.   You should see SYSTEM ADMINISTRATORS in the Roles tab of the view user page.