How to recover Oracle data files if mistakenly deleted?

If the Oracle data files are mistakenly deleted, you can try the following methods to recover the data files:

1. Utilize the Oracle RMAN recovery tool: Oracle Recovery Manager (RMAN) is a tool provided by Oracle for backing up and restoring databases. You can use RMAN to restore accidentally deleted data files.
2. Use the operating system backup: If you have backups at the operating system level, you can attempt to recover mistakenly deleted data files from them.
3. Utilizing Oracle Flashback technology allows you to roll back the database to different time points, enabling you to recover accidentally deleted data files.
4. Try using a third-party data recovery tool: If the above methods are not able to help you recover your data files, you can try using a third-party data recovery tool to recover mistakenly deleted data files.

Regardless of the method used, recovering mistakenly deleted data files requires careful handling to avoid further damage to the database. It is recommended to backup the database before recovering data files to prevent irreversible loss.