Hi all

I have a database in Interbase 6 and convert it to Firebird 2 need someone could help me?

you can export interbase databse in txt files or csv tables by tables

and then import into firebird but you must wtach on order.first import parent tables then child table.

second solutions is that by using ETL.
pentaho is open source written in java.
support about 35 databases (interbase and firebird drivers isis include).
databasedrivers cams with pentaho.

Extract, transform, load - Wikipedia, the free encyclopedia
Pentaho Commercial Open Source Business Intelligence Kettle Project

speed of importing in firebird is about 4000 recors/seconds without index.
but this is tested on disk which is 6 years old and has speed 5400.
for oracle speed is 25 000 r/s

first load firebird databases then create index.