echo "db_name=newdbname" > $ORACLE_HOME/dbs/init$ORACLE_SID.ora
orapwd file=$ORACLE_HOME/dbs/orapw$ORACLE_SID
sqlplus / as sysdba 
SQL> startup nomount
SQL> exit

rman auxiliary /
DUPLICATE DATABASE TO newdbname
  SPFILE
# устанавливает нужные параметры (или сбрасываем их)
parameter_value_convert 'prod','pstb'
#set db_unique_name='pstb'
# для Oracle Mfnaged Files
#set db_create_file_dest='/oracle/app/oradata'
set db_create_online_log_dest_1='/oracle/app/oradata'
# для User Managed Files
#reset db_file_name_convert='/prod/','/pstb/'
#reset log_file_name_convert='/prod/','/pstb/'
set log_archive_max_processes='5'
reset control_files
#set fal_server='prod'
#set standby_file_management='AUTO'
#set log_archive_config='dg_config=(prod,pstb,master)'
#set log_archive_dest_1='service=prod ASYNC valid_for=(ONLINE_LOGFILE,PRIMARY_ROLE) db_unique_name=prod'
#set log_archive_dest_2='service=master ASYNC valid_for=(ONLINE_LOGFILE,PRIMARY_ROLE) #db_unique_name=master'

  BACKUP LOCATION '/path/rman_backup'
#  NOFILENAMECHECK
;