How to recover system database user password?
I mistakenly changed the password for system database user, and now I can´t login using the new password - probably wrong typed:
[oracle@dp-db1 ~]$ sqlplus system
SQL*Plus: Release 12.1.0.2.0 Production on Tue Dec 28 12:45:53 2021
Copyright (c) 1982, 2014, Oracle. All rights reserved.
Enter password:
ERROR:
ORA-12532: TNS:invalid argument
How can I recover system user password?
Is it possible to recover it without stopping database?