RMAN-03009: failure of backup command on ORA_DISK_1 channel at 09/26/2017 12:01:59
ORA-17629: Cannot connect to the remote database server
ORA-17627: ORA-12518: TNS:listener could not hand off client connection
ORA-17629: Cannot connect to the remote database server

>rman target sys/xxxxxx@DBSlive auxiliary sys/xxxxxx@
DBSdev

Recovery Manager: Release 11.2.0.2.0 - Production on Tue Sep 26 12:01:43 2017

Copyright (c) 1982, 2009, Oracle and/or its affiliates.  All rights reserved.

connected to target database: DBSLIVE (DBID=2573738273)
connected to auxiliary database: DBSDEV (not mounted)

RMAN> DUPLICATE TARGET DATABASE TO DBSDEV FROM ACTIVE DATABASE
2>    spfile
3>    set db_name='DBSDEV'
4>    nofilenamecheck;

Starting Duplicate Db at 26-SEP-17
using target database control file instead of recovery catalog
allocated channel: ORA_AUX_DISK_1
channel ORA_AUX_DISK_1: SID=121 device type=DISK
allocated channel: ORA_AUX_DISK_2
channel ORA_AUX_DISK_2: SID=416 device type=DISK
allocated channel: ORA_AUX_DISK_3
channel ORA_AUX_DISK_3: SID=240 device type=DISK
allocated channel: ORA_AUX_DISK_4
channel ORA_AUX_DISK_4: SID=299 device type=DISK

contents of Memory Script:
{
   backup as copy reuse
   targetfile  'D:\ORACLE\PRODUCT\11.2.0\DBHOME_1\DATABASE\SPFILEDBSLIVE.ORA' au
xiliary format
 'D:\ORACLE\PRODUCT\11.2.0\DBHOME_1\DATABASE\SPFILEDBSDEV.ORA'   ;
   sql clone "alter system set spfile= ''D:\ORACLE\PRODUCT\11.2.0\DBHOME_1\DATABA
SE\SPFILEDBSDEV.ORA''";
}
executing Memory Script

Starting backup at 26-SEP-17
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=987 device type=DISK
allocated channel: ORA_DISK_2
channel ORA_DISK_2: SID=1164 device type=DISK
allocated channel: ORA_DISK_3
channel ORA_DISK_3: SID=1342 device type=DISK
allocated channel: ORA_DISK_4
channel ORA_DISK_4: SID=12 device type=DISK
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of Duplicate Db command at 09/26/2017 12:01:59
RMAN-05501: aborting duplication of target database
RMAN-03015: error occurred in stored script Memory Script
RMAN-03009: failure of backup command on ORA_DISK_1 channel at 09/26/2017 12:01:59
ORA-17629: Cannot connect to the remote database server
ORA-17627: ORA-12518: TNS:listener could not hand off client connection
ORA-17629: Cannot connect to the remote database server