RMAN-07539: Insufficient Privileges To Create Or Upgrade The Catalog Schema.

Solution :

Connect to catalog db and run the script dbmsrmansys.sql and dbmsrmanvpc.sql

$ sqlplus sys/oracle@catalogdb as sysdba

SQL*Plus: Release 12.1.0.2.0 Production on Thu May 12 14:35:52 2023

Copyright (c) 1982, 2014, Oracle. All rights reserved.


Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options

SQL> select name from v$database;

NAME
---------
CATALOGDB


SQL> @?/rdbms/admin/dbmsrmansys.sql
alter session set "_ORACLE_SCRIPT" = true
*
ERROR at line 1:
ORA-02248: invalid option for ALTER SESSION

PL/SQL procedure successfully completed.
PL/SQL procedure successfully completed.
Grant succeeded.
Grant succeeded.
Grant succeeded.
Grant succeeded.
Grant succeeded.
Grant succeeded.
Grant succeeded.
Grant succeeded.
alter session set "_ORACLE_SCRIPT" = false
*
ERROR at line 1:
ORA-02248: invalid option for ALTER SESSION


SQL>
SQL>
SQL> @?/rdbms/admin/dbmsrmanvpc.sql

Checking the operating user... Passed

Usage: dbmsrmanvpc.sql [...]
dbmsrmanvpc.sql -all

This script performs an upgrade of RMAN base catalog and corresponding
VPC users schemas to a new VPD model. RMAN base catalog schema names
have to be supplied as command line parameters. Up to 10 schema names
can be supplied per script execution. When -all is specified the
script attempts to detect the RMAN base catalog schemas automatically