How to start the service for Oracle database?

To start the Oracle database service, you can follow these steps:

  1. Open the command-line interface (Command Prompt on Windows, Terminal on Linux).
  2. Log in to the operating system with administrator privileges.
  3. Enter the following command to start the Oracle database service: (Make sure to adjust accordingly based on your Oracle version and operating system)
  4. On Windows, type: net start OracleServiceSID (SID is the name of your database instance)
  5. In Linux, type: sudo su – oracle (switch to the oracle user)
  6. Then type: lsnrctl start (to start the listener)
  7. Final input: sqlplus / as sysdba (log in to the database as SYSDBA)
  8. Enter your SYSDBA password to log in to the database.
  9. After successfully logging in, you can input the following commands to verify if the database has been started:
  10. Choose the instance_name and status from the V$INSTANCE view.
  11. Display the parameter db_name.

If the database has started successfully, you will see the name of the database instance and its status as OPEN displayed.

Please note that these steps are based on default installation and configuration. If your Oracle database has custom installation or configuration, please make the necessary adjustments according to your specific situation.

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