IBFirstAID

IBFirstAID and FBFirstAID are tools that can automatically diagnose and repair corrupted InterBase or Firebird databases.

IBFirstAID/FBFirstAID is the only solution for automatically repairing corruption that neither gbak nor gfix can handle.

It uses its own layer for low-level database access without using the InterBase or Firebird engine, so it can perform real "surgical" operations and repair your database when all other standard mechanism's cannot.