Hi, If you are duplicating it to a set time/sequence number such that all post-backup-data would be from archivelogs and it would do an open resetlogs, does this work: duplicate database PROD to TEST pfile='pfile.TEST' backup location='/backup/PROD' LOGFILE GROUP 1 ('+DATA_TEST','+DATA_TEST') SIZE 1000M, GROUP 2 ('+DATA_TEST','+DATA_TEST') SIZE 1000M; On Thu, Mar 29, 2012 at 5:20 PM, neil campbell <campbell.neil@xxxxxxxxxxx> wrote: > > >... > > I am using the syntax > > duplicate database PROD to TEST pfile='pfile.TEST' backup > location='/backup/PROD' LOGFILE INSTANCE 'TEST1' GROUP 1 > ('+DATA_TEST','+DATA_TEST') SIZE 1000M, INSTANCE 'TEST2' GROUP 2 > ('+DATA_TEST','+DATA_TEST') SIZE 1000M; > -- //www.freelists.org/webpage/oracle-l