Thank you all very who have taken your time to reply my question! It turned out that it is a firewall problem between my test box (in a lab) and my production. On 8/2/07, Li Li <litanli@xxxxxxxxx> wrote: > > Hi, All, > > I was trying to clone my production RAC database to my test box. When I > tried to RMAN connect to my production db from my test box (which has the > exact same oracle version) and I got the following error, it looked like it > cannot access the target host. However I was able to connect to my > production db through SQL/PLUS. > > Any idea what would be the problem? > > TIA, > -Li > > > [oracle@rac_node1 ~]$ $ORACLE_HOME/bin/rman target sys/xxxx@proddbauxiliary / > > Recovery Manager: Release 10.2.0.2.0 - Production on Thu Aug 2 15:50:03 > 2007 > > Copyright (c) 1982, 2005, Oracle. All rights reserved. > > RMAN-00571: =========================================================== > RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS =============== > RMAN-00571: =========================================================== > RMAN-00554: initialization of internal recovery manager package failed > RMAN-04005: error from target database: > ORA-12545: Connect failed because target host or object does not exist > > [oracle@rac_node1 ~]$ sqlplus sys/xxxx@proddb as sysdba > > SQL*Plus: Release 10.2.0.2.0 - Production on Thu Aug 2 15:44:58 2007 > > Copyright (c) 1982, 2005, Oracle. All Rights Reserved. > > > Connected to: > Oracle Database 10g Enterprise Edition Release 10.2.0.2.0 - 64bit > Production > With the Partitioning, Real Application Clusters, OLAP and Data Mining > options > > SQL> >