Forget the sysbda password of Oracle and modify the sysdba password.

If you forget about SYSDBA, you can modify the password of SYSDBA. The premise is to find the installation path of Oracle.

PWDsid is available in the \ oracle \ product \ 11.2.0 \ dbhome_1 \ database directory. ora file. This is the file that stores user account and password information. sid indicates the name of your database instance. This file cannot be edited in text. Delete.

Use orapwd.exe in dos. if you cannot run orapwd.exe, check whether the oracle environment variables are correct.

Orapwd file = PWDsid. ora password = 123456 this command is used to modify the password of the sys user. You overwrite the original password file. The password of other users except sys and system will not change.