What if Oracle forgets the password of sys/system/Scott?

1. Forget the logon password of a user except sys and system.
Log On As A sys (or system) user.

Conn sys/pass_word as sysdba;

Use the following statement to modify the user password.

Alter user user_name identified by newpass;

Note: The password cannot be full of numbers. It cannot start with a number. Otherwise: ORA-00988: Password missing or invalid

2. Forget the password of the Sys user or the System user.

If you forget the password of the System user, you can use the Sys user to log on. Then, use the alter user password command.

Change the password.

Conn sys // pass_word as sysdba;

Alter user system identified by newpass;

If you forget the password of the Sys user, you can use the System user to log on. Then, use the alter user password command.

Change the password.

Conn system // pass_word;

Alter user system identified by newpass;

3. If the passwords of SYS and system users are forgotten or lost.

This is particularly important.

You can use orapwd. EXE to change the password.

Start Menu-> Run-> enter 'cmd', open the Command Prompt window, and enter the following command:

Orapwd file = D:/Oracle/product/10.2.0/db_1/database/pwdctcsys. ora

Password = newpass

 

This command re-generates the Database Password File. The password file is located in the ORACLE_HOME directory.

/Database directory.

This password is used to change the password of the Sys user. The password of other users except sys and system will not change.