The username and password used for installing Oracle are not remembered.
Don't worry. Open sqlplus.
Follow these steps to create a login user:
Step 1: Use sys to log on to sys/password as sysdba. Any character of the password can be logged on.
Sys/manager as sysdba
After successful login, you can create a new user.
Step 2:
Create user
Syntax:
Create user Username identified by password create user diway identified by diwaycom;
UNLOCK the new USER: alter user Username account unlock/LOCK
Alter user diway account unlock; // unlock the user
Alter user diway account lock; // user lock
Grant New Login User Creation permission
Syntax: crant create session to user name
Grant create session to diway;
Grant new user database administrator permissions
Syntax:
Crant dba to user name; grant dba to diway
'
Switch to the newly created user login
Syntax: CONNECT user name/Password
Connect diway/diwaycom
Delete a user
Syntax: drop user Name
Drop user diway;
Note that all operations must be completed with ";" at the end of the operation.