Hi,
Sometimes You can get “TNS-01190: The user is not authorized to execute the requested listener command ” error.
Details of error are as follows.
TNS-01190: The user is not authorized to execute the requested listener command
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC)))
TNS-01190: The user is not authorized to execute the requested listener command
This issue was caused hang of listener. So kill the listener process from OS with kill -9 , then try again.
Or check /var/tmp/.oracle file ownership, it should be oracle:dba or oracle:oinstall, if it is root then change it.
chown oracle:dba /var/tmp/.oracle
For Windows environment:
As OS Authentication became malfunctioning, you will need to use Password Authentication as follows:
2. LSNRCTL> change_password
Old password: <enter_old_password>
New password: <enter_new_password> (text is not echoed)
Reenter new password: <reenter_new_password> (text is not echoed)
3. LSNRCTL> save_config
4. LSNRCTL> exit
Do you want to learn more details about RMAN, then read the following articles.
https://ittutorial.org/rman-backup-restore-and-recovery-tutorials-for-beginners-in-the-oracle-database/