Oracle Database Server initial username and password

1. After successful Oracle Installation, you will be prompted to change the password of the supervisor. If you do not change the default password of the account:

Internal/oracle

Sys/change_on_install

System/manager

Scott/tiger

Sysman/oem_temp

2. Modify the administrator or password of a user

Scott, password: tiger by default

Run CMD and press Enter:
Enter the following parameters in sequence:
Sqlplus/nolog
Conn/as sysdba
Alter user sys identified by sys;
This is to change the password of the Administrator sys.
Other users can also modify the password: alter user Username identified;