Default passwords of Oracle 11g?

oracle11g
Xolve picture Xolve · Apr 11, 2009 · Viewed 440.5k times · Source

I installed Oracle 11g. I didn't change the passwords for SYSTEM and SYS. However now I find that the default passwords do not work. Please help.

Answer

Luke Woodward picture Luke Woodward · Apr 12, 2009

It is possible to connect to the database without specifying a password. Once you've done that you can then reset the passwords. I'm assuming that you've installed the database on your machine; if not you'll first need to connect to the machine the database is running on.

  1. Ensure your user account is a member of the dba group. How you do this depends on what OS you are running.

  2. Enter sqlplus / as sysdba in a Command Prompt/shell/Terminal window as appropriate. This should log you in to the database as SYS.

  3. Once you're logged in, you can then enter

    alter user SYS identified by "newpassword";

    to reset the SYS password, and similarly for SYSTEM.

(Note: I haven't tried any of this on Oracle 12c; I'm assuming they haven't changed things since Oracle 11g.)

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