Oracle DROP TABLE: Release Space Immediately

In Oracle, when you use the DROP TABLE command to delete a table, the storage space occupied by the table is not released immediately. Instead, the table is moved to the recycle bin to prevent accidental data loss.

If you wish to immediately free up the storage space occupied by the table, you can use the following method:

1. Permanently delete a table using the PURGE command: Adding the PURGE keyword after the DROP TABLE command will immediately delete the table and free up storage space. For example: DROP TABLE table_name PURGE;
2. Truncate a table using the ALTER TABLE command: You can truncate a table using the ALTER TABLE command to delete all data from the table while keeping the table structure intact. This helps to free up storage space while retaining the table structure. For example: ALTER TABLE table_name TRUNCATE;
3. Reallocate tablespace using the ALTER TABLE command: If you want to change the storage space used by a table, you can use the ALTER TABLE command to modify the storage options, such as adjusting the tablespace or storage parameters.

Please make sure to backup your data before performing the above operation to prevent any accidental deletion or modification that may result in data loss.