Which tools can be used to delete diagnosis files in SAP HANA?

In SAP HANA, both the SAP HANA cleaner and the SAP HANA database explorer are tools available for managing system files, including the deletion of diagnostic files.

The SAP HANA cleaner is specifically designed for maintaining and optimizing the database by cleaning up unnecessary files, which includes diagnostic logs and files that may have accumulated over time. This tool helps in managing the storage space effectively.

On the other hand, the SAP HANA database explorer provides a user-friendly interface that allows database administrators to perform a variety of tasks, including monitoring the database, executing queries, and managing files. Through this interface, users can also access and delete diagnostic files, among other administrative functions.

Utilizing both tools ensures comprehensive management of diagnostic data, thus making option C the correct choice since both the SAP HANA cleaner and the database explorer are capable of performing this function.