Hi Tony, Thanks for reply, I checked again but everything is OK. The replication is working fine between primary and standby. I tried to resync catalog from standby. Look ~> rman target XXX/XXX auxiliary XXX/XXX@XXX (log_archive_config) catalog XXX/XXX@XXX Recovery Manager: Release 11.2.0.3.0 - Production on Fri Oct 4 11:29:00 2013 Copyright (c) 1982, 2011, Oracle and/or its affiliates. All rights reserved. connected to target database: XYZS1 (DBID=3537003386) connected to recovery catalog database connected to auxiliary database: XYZS1 (DBID=3537003386) RMAN> resync catalog; starting partial resync of recovery catalog ORA-20079: full resync from primary database is not done doing automatic resync from primary resyncing from database with DB_UNIQUE_NAME XYZS1DG1 RMAN-00571: =========================================================== RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS =============== RMAN-00571: =========================================================== RMAN-03009: failure of resync command on default channel at 10/04/2013 11:29:08 ORA-17629: Cannot connect to the remote database server ORA-17627: ORA-12154: TNS:could not resolve the connect identifier specified ORA-17629: Cannot connect to the remote database server RMAN> thanks *-----------------* *Tiran* *Best Regards Stay in touch...* On 4 October 2013 05:36, De DBA <dedba@xxxxxxxxxx> wrote: > Hi, > > I've never seen this happen, but it looks to me that the connection that > fails is not to the catalog. I read it as RMAN is trying to connect to the > primary in order to resync the catalog, and that name (the primary) does > not resolve. Did you check that tnsnames.ora on the machine/home that you > are running RMAN from has an entry for the primary? The tns alias should be > the same as what is defined in log_archive_config on the standby, I imagine. > > Cheers, > Tony > > On 02/10/13 20:30, Outsider wrote: > >> Dear experts, >> I have physical data guard implemented and I also scheduled the backup of >> database with cron on Linux to IBM tape. Everything was fine for about 6 >> months. >> few days ago I realized that backup is not performed from standby >> database. >> After same investigation I found out that this is because RMAN from >> standby >> DB wants to resync catalog but can't connect to catalog database which is >> separate database. >> >> >> <snip> > > -- //www.freelists.org/webpage/oracle-l