RMAN Duplicate时PLS-00201: identifier 'DBMS_RCVCAT.GETDBID' must be declared

RMAN> duplicate target database for standby from active database;

Starting Duplicate Db at 15-JUN-18
using channel ORA_AUX_DISK_1

contents of Memory Script:
{
   backup as copy reuse
   targetfile '/u01/app/oracle/product/11.2.0/db_1/dbs/orapworcl' auxiliary format
 '/u01/app/oracle/product/11.2.0/db_1/dbs/orapworcls' ;
}
executing Memory Script

Starting backup at 15-JUN-18
using channel ORA_DISK_1
Finished backup at 15-JUN-18

contents of Memory Script:
{
   backup as copy current controlfile for standby auxiliary format '/oradata/control01.ctl';
   restore clone controlfile to '/u01/app/oracle/fast_recovery_area/orcls/control02.ctl' from
 '/oradata/control01.ctl';
}
executing Memory Script

Starting backup at 15-JUN-18
using channel ORA_DISK_1
channel ORA_DISK_1: starting datafile copy
copying standby control file
output file name=/u01/app/oracle/product/11.2.0/db_1/dbs/snapcf_orcl.f tag=TAG20180619T202436 RECID=3 STAMP=979244676
channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:01
Finished backup at 15-JUN-18

Starting restore at 15-JUN-18
using channel ORA_AUX_DISK_1


DBGSQL: TARGET> begin :fhdbi := dbms_rcvcat.getDbid; end;
DBGSQL: sqlcode = 6550
DBGSQL: B :fhdbi = 32767
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of Duplicate Db command at 06/15/2018 00:58:58
RMAN-05501: aborting duplication of target database
RMAN-03015: error occurred in stored script Memory Script
ORA-06550: line 1, column 17:
PLS-00201: identifier 'DBMS_RCVCAT.GETDBID' must be declared
ORA-06550: line 1, column 7:
PL/SQL: Statement ignored

查询网络资料https://blog.csdn.net/tianlesoftware/article/details/9358939后
解释是使用非catalog，在rman 连接时，加上nocatalog关键字，如下：