This shows the following query:

select * from oudm_sys.dwb_acct_bal_hist;

The output shows:

Error stating at line 1 in command
Error report -
SQL Error: ORA-01031 insufficient privileges

At this stage, even though OUDM_MGR has the SELECT ANY TABLE privilege, this user cannot select from the OUDM_SYS.DWB_ACCT_BAL_HIST table because it is protected by a realm.