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# Change the system password

During installation, WebLogic Server does the following to the File realm in ``mydomain``:

1. Adds the username and password supplied during installation to the File realm.
2. Sets the system password to the password specified during installation.

These steps ensure that a ``system`` user is defined in the compatibility version of the File realm.

When using the Configuration Wizard to create a new WebLogic Server domain, WebLogic Server sets the system password in the File realm in ``mydomain`` to the password of the first user defined in the Admin role. If the Admin role is mapped only to the Administrators group, the system password is the password of the first alphabetical user in the Administrators group.

To improve security, BEA recommends frequently changing the system password that was set during installation. Each WebLogic Server deployment must have a unique password.

1. If you have not already done so, in the Change Center of the Administration Console, click Lock & Edit (see Use the Change Center).
2. In the left pane, expand Compatibility Security > Users.
3. Click the name of the `system` user.
4. In the Settings for system page, enter the old password.
5. Enter a new password in the New Password field.
6. Enter the new password again in the Confirm New Password field and click Save.

   When you use an Administration Server and Managed Servers in a domain, the Managed Server must always use the password for the Administration Server in the domain. Always change the password for the Administration Server through the WebLogic Server Administration Console. When WebLogic Server is rebooted, the new password is propagated to all the Managed Servers in the domain.

7. To activate these changes, in the Change Center of the Administration Console, click Activate Changes.
   Not all changes take effect immediately—some require a restart (see Use the Change Center).