You don't say anything what happened.
A basic functionality of the Progress database is the crash recovery which will ensure that the database is consistent after a crash. There is no need to supply a parameter to invoke it, it will be done automatically when you access the database (start the database or single user access) as the first thing.
What crash recovery will do for you:
1. It will write all data changes from committed transactions that have not been written yet to the database files.
2. It will back out all data changes from uncommitted transactions that have already been written to the database files.
I am not aware of any possibility to recovery data changes from transactions that were active at the time your database crashed. Maybe others know.
HTH, RealHeavyDude.