The order of the oracle database startup steps is

The Oracle database startup sequence is: 1. Check the preconditions; 2. Start the listener; 3. Start the database instance; 4. Wait for the database to open; 5. Connect to the database; 6. Verify the database status; 7 . Enable the service (if required); 8. Test the connection.

Oracle Database Startup Step Sequence

Starting an Oracle database involves a series of ordered steps to ensure that the database is functioning properly start up. The following is the sequence of steps for Oracle database startup:

1. Check the prerequisites

• Make sure all necessary hardware and software are installed.
• Verify that the operating system environment variables are set correctly.

2. Start the listener

• The listener is a service that listens for connection requests from clients.
• Use the command "lsnrctl start" to start the listener.

3. Start the database instance

• Use the command "sqlplus /nolog" to connect to the database.
• Enter the "startup" command to start the database instance.

4. Wait for the database to open

• It takes a while for the database to open, depending on the size and complexity of the database.
• Wait for the database to display the "Database is open" message.

5. Connect to the database

• Use the "connect" command to connect to the database.
• Please enter your username and password.

6. Verify the database status

• Use the "show parameter status" command to verify the database status.
• Make sure the database is in "OPEN" status.

7. Enable Services

• If necessary, you can enable additional Oracle services.
• Use the command "lsnrctl create service" to create a service.

8. Test the connection

• Use a client tool or application to test the connection to the database.
• Ensure that you can successfully connect and execute queries.

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