How to retrieve Corrupted Lotus Notes Database (RVV Bucket)

I have a replica of my mail and for some reasons, it get corrupted with RVV Bucket error message.

I tried to retrieve it using the following commands but to no avail:

nUpdall -R
nfixup -F
ncompact -C

I did make a new replica but it cannot go through as the Db is corrupted.

Any tool that can be used to retrieve this 1GB Db?