It make sense. Basically duplicate database in Oracle10g need complete backupsets exists in auxiliary server not in target server. Since you are doing duplicate on the same machine with target database, you don't need to do copy. but auxiliary instance should has proper environment settings. BTW: Which environment you missed in auxiliary instance? and after you set , is davidh instance display in V$ASM_CLIENT? -- Kamus <kamusis@xxxxxxxxx> Visit my blog for more : http://www.dbform.com Join ACOUG: http://www.acoug.org On Mon, Dec 13, 2010 at 1:12 PM, Yong Huang <yong321@xxxxxxxxx> wrote: > A quick update. Oracle support called me and asked me to try setting the > environment to the auxiliary instance instead of target. And voila, the > error is gone! > > rman target sys/xxxx@mytarget catalog rman@mycatalog auxiliary / > > I'll work on it tomorrow morning because I still have disk space issue. > Will make an NFS mount to somewhere (with event 10298 level 32). > > Yong Huang > > > > -- //www.freelists.org/webpage/oracle-l