IS there any licenced tool to recover corrupted NWDI track

We are going to update EP to 7.4 from 7.01.

And one of the post update requirment would be to re-compile  all the WD JAVA application

But we are in situation where NWDI tracks whave got corrupted somehow.

Could any bodyplease  tell me if there is/are any licensed toolto recover those tracks.

Thanks

Kamal