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Reset Oracle Password

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This blog entry shows you how to reset the system password for an Oracle Database. It uses a Linux image running Oracle Database 11g Express Edition. It assumes the student user is the sudoer user.

After you sign on to the student user account, you open a Terminal session and you should see the following:

[student@localhost python]$

The oracle user account should be configured to prevent a login. So, you should use the su command or sudo command to open a terminal shell as the root user.

[student@localhost python]$ sudo sh
[sudo] password for student:

As the root user, you can login as the oracle user with the following command:

su - oracle

and, you should see the following prompt. You can see the present working directory (pwd) with the pwd command:

-bash-4.2$ pwd

You need to source the shell file created by the installation of the Oracle Database during the installation. You have two approaches to source the environment file, the first approach is with a dot (.), like

. /u01/app/oracle/product/11.2.0/xe/bin/

or, this

source /u01/app/oracle/product/11.2.0/xe/bin/

The file contains the following:

export ORACLE_HOME=/u01/app/oracle/product/11.2.0/xe
export NLS_LANG=`$ORACLE_HOME/bin/`

Now, you can connect to the Oracle Database as the internal user with the following command:

sqlplus / as sysdba

Once connected as the internal user, you can reset the system user’s password to “cangetin” with this command:


At this point, you can also stop and start the database. You stop the database with this command:

shutdown immediate

You can then start the database with this command:


After setting the system user password, sign out of SQL*Plus. Then, you can type two exits to return to the student user account, like this:

-bash-4.2$ exit
sh-4.2# exit
[student@localhost python]$

As always, I hope this helps those who need to reset the system password when they don’t know what it was to begin with.

Written by maclochlainn

February 21st, 2017 at 3:45 pm

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