Sandra, Any more or less important migration should be tested first. Unavailability of the test environment is a bad argument - you get what you pay for. So one of the best advices would be, obviously - test it first. I had no problem with restoring 32 to 64 and 64 to 32 bit (10.2). One member of the list mentioned that he encountered problems with 64->32 bit restore/recovery so testing is a must. Cheers, Alex On 8/2/07, Sandra Becker <sbecker6925@xxxxxxxxx> wrote: > Apparently when I moved from 32-bit to 64-bit, I was given bad advice. I > was told that you couldn't apply 32-bit archived redo to a 64-bit database. > Was this really bad advice? I need to do this migration again and would > like a cleaner method than the last time I did this. -- Alex Gorbachev, Oracle DBA Brewer, The Pythian Group http://www.pythian.com/blogs/author/alex http://www.oracloid.com BAAG party - www.BattleAgainstAnyGuess.com -- //www.freelists.org/webpage/oracle-l