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 ~]$ $ORACLE_HOME/bin/rman target sys/xxxx@proddb auxiliary / Recovery Manager: Release 10.2.0.2.0 - Production on Thu Aug 2 15:50:03 2007 Copyright (c) 1982, 2005, Oracle. All rights reserved. RMAN-00571: =========================================================== RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS =============== RMAN-00571: =========================================================== RMAN-00554: initialization of internal recovery manager package failed RMAN-04005: error from target database: ORA-12545: Connect failed because target host or object does not exist [oracle@rac_node1 ~]$ 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>