Modify oracle database password

Oracle database is one of the most popular relational databases in the world. It has powerful features and excellent stability, so many businesses and organizations rely on it to store and manage valuable data. To protect this data, database administrators need to frequently update database passwords.

This article will introduce how to change the Oracle database password. Whether you are managing an Oracle database for the first time or want to review the process, this article will guide you.

Step 1: Copy the password file to the new location

Before changing the Oracle database password, we need to back up the current password file. Open a terminal and enter the following command to back up the pwdfile.ora file.

cp $ORACLE_HOME/dbs/orapw<your_sid> /home/oracle/pwdfile.ora.bak

Then we need to copy this file to the new location. This step is very important in case you lose or have problems with your password.

cp $ORACLE_HOME/dbs/orapw<your_sid> /home/oracle/newpwdfile.ora

Step 2: Shut down the Oracle instance

You need to shut down the Oracle instance before changing the password. Enter the following command in the terminal to shut down the Oracle instance.

sqlplus / as sysdba
shutdown immediate;
exit;

Step 3: Change the password

After closing the Oracle instance, we can change the password. Enter the following command in the terminal to change the password.

orapwd file=<file_path> password=<your_password>

Please note that <file_path> here should be the location of the new password file just created. <your_password> should be the new password.

Step 4: Start the Oracle instance

After changing the password, we need to start the Oracle instance. Enter the following command in the terminal to start the Oracle instance.

sqlplus / as sysdba
startup;
exit;

Step 5: Test the new password

Finally, we need to test whether the new password is valid. Enter the following command in the terminal to test the new password.

sqlplus sys/<your_password>@<your_database> as sysdba

Please note that <your_password> here should be the new password and <your_database> should be the name of the database you want to connect to.

If you can successfully connect to the Oracle database, it means that the new password has taken effect successfully.

Summary

Changing the Oracle database password may sound difficult, but it is actually very simple. First, we need to copy the password file to a new location for backup. Then shut down the Oracle instance, change the password, and start the Oracle instance. Finally, test whether the new password works.

At all times, protecting the database is crucial. By updating your passwords regularly, you can reduce the risk of attacks on your database to ensure security.

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