How to empty an oracle database

To clear an Oracle database, you can follow the following steps:

1. Connect to the database: Use the database administrator account and password to connect to the database using SQL*Plus or another Oracle database client.
2. Stop the database instance: Use the following command to stop the database instance:

SHUTDOWN IMMEDIATE;

1. Start the database instance: Use the following command to start the database instance:

STARTUP;

1. Execute a database cleanup script: Run an SQL script to clear database objects such as tables, views, indexes, etc. You can use the following command to execute the script:

@<脚本路径>

In a script, you can use the DELETE or TRUNCATE statement to remove data from a table, or use the DROP statement to delete the entire table.

1. Submit changes: Execute the following command to submit changes:

COMMIT;

1. Rebuild database objects (optional): If you need to recreate database objects, you can execute the corresponding DDL statements to recreate tables, views, indexes, etc.

Please make sure to back up the database before proceeding with the above steps, and exercise caution to avoid irreversibly deleting important data.