How do you restart an Oracle database?

To restart the Oracle database, you can choose from the following methods:

  1. Utilize the SQL*Plus command line tool:
  2. Open the command line window and log in to the Oracle database.
  3. Execute the following command: SHUTDOWN IMMEDIATE;
    Then, start up the system.
  4. This will immediately shut down the database and restart it.
  5. Utilizing Oracle Enterprise Manager (OEM):
  6. Open the OEM console and log in to the corresponding database instance.
  7. Choose the database instance in the “Instances” section on the “Home” tab.
  8. Click on the “Restart” button on the “Instances” page.
  9. Utilize Oracle Restart (within a clustered environment):
  10. Open the command-line window and log in to a host in the cluster environment.
  11. Enter the following commands:
    – Stop the Cluster Ready Services with “crsctl stop has -f”
    – Start the Cluster Ready Services with “crsctl start has”
  12. This will stop and start all resources containing Oracle databases.

Before restarting the Oracle database, make sure to have backed up important data and have the necessary permissions and licenses to carry out these actions.

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