RMAN-06429: TARGET database is not compatible with this version of RMAN

I restored a backup from an older version than the current database version. Therefore, when I tried to use the RMAN utility, I received the following errors:

Recovery Manager: Release 11.2.0.3.0 - Production on Fri Sep 9 12:21:46 2022

Copyright (c) 1982, 2011, Oracle and/or its affiliates.  All rights reserved.

RMAN> connect target /

Recovery Manager incompatible with TARGET database: RMAN 8.0.4.0 to 11.1.0.7 required
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-06429: TARGET database is not compatible with this version of RMAN

After executing the scripts dbmsrman.sql,dbmsbkrs.sql,prvtrmns.plb and prvtbkrs.plb under the location @$ORACLE_HOME/rdbms/admin/ as the SYS owner, I was able to use the RMAN utility as below:

sqlplus / as sysdba

SQL> @$ORACLE_HOME/rdbms/admin/dbmsrman.sql
SQL> @$ORACLE_HOME/rdbms/admin/dbmsbkrs.sql
SQL> @$ORACLE_HOME/rdbms/admin/prvtrmns.plb
SQL>@$ORACLE_HOME/rdbms/admin/prvtbkrs.plb

Disconnected from Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
With the Partitioning, Automatic Storage Management, OLAP, Data Mining
and Real Application Testing options
[oracle@techdatabasket bin]$ rman

Recovery Manager: Release 11.2.0.3.0 - Production on Fri Sep 9 12:36:14 2022

Copyright (c) 1982, 2011, Oracle and/or its affiliates.  All rights reserved.

RMAN> connect target /

brunors

*The views expressed here are my own and do not represent those of my employer.*

Hello, I’m Bruno — a dual citizen of Brazil and Sweden. I bring a global perspective shaped by experiences in both South America and Europe, with a strong focus on collaboration and innovation across cultures. I am a Computer Scientist, PhD Candidate in Information and Communication Technologies, focusing on Data Science and Artificial Intelligence, and hold dual Master’s degrees in Data Science and Cybersecurity. With over fifteen years of international experience spanning Brazil, Hungary, and Sweden, I have collaborated with global organizations such as IBM, Playtech, and Oracle, as well as contributed remotely to projects across multiple regions. My professional interests include Databases, Cybersecurity, Cloud Computing, Data Science, Data Engineering, Big Data, Artificial Intelligence, Programming, and Software Engineering,  all driven by a deep passion for transforming data into strategic business value.