Oracle RMAN semi automatic recovery script restore phase

#!/bin/bash
##############################################
#NAME: rman_auto_restore.sh
#DESC:restore oracle db from prod environment to test environment very quickly.
#Note: Linux USER - execute as oracle instance user
#History:
# v1.0 2022-03-08 yangshixian
##############################################

. /home/${USER}/.bash_profile
#
#define Oracle env  To configure EBS environment variable 
#
export PATH=/data/ebs/sit/db/tech_st/11.2.0/perl/bin:/data/ebs/sit/db/tech_st/11.2.0/bin:$PATH
export PERL5LIB=/data/ebs/sit/db/tech_st/11.2.0/perl/lib/5.10.0:/data/ebs/sit/db/tech_st/11.2.0/perl/lib/site_perl/5.10.0:/data/ebs/sit/db/tech_st/11.2.0/appsutil/perl
export ORACLE_SID=PROD # in the light of linux The instance name in the configuration file of is case sensitive 
export ORACLE_HOME=/data/ebs/sit/db/tech_st/11.2.0
export LD_LIBRARY_PATH=$ORACLE_HOME/lib

#
#rman env conf  To configure rman environment variable #
#

RMAN_BAK_PATH=/data1/backup/rman_bak_data/
RMAN_CONTROLFILE=`ls $RMAN_BAK_PATH | grep C0_ |head -1`
TARGET_DATA_FILE_PATH=/data/ebs/sit/db/apps_st/data

#
#unmount:execute rman restore scripts
#
echo "restore controlfile begin ..."
rman target / <<EOF run { startup nomount; RESTORE CONTROLFILE FROM '$RMAN_BAK_PATH$RMAN_CONTROLFILE'; alter database mount; catalog start with '$RMAN_BAK_PATH' noprompt; } exit EOF

echo "restore controlfile end Status $?"

#
#mount:execute rman restore scripts
#
echo "gen restore rman_scripts begin ...."

sqlplus -s / as sysdba <<EOF set heading off feed off verify off echo off pages 0 trimspool on set lines 132 pagesize 0 spo restore.rman select 'run{' from dual; select 'set newname for datafile ' || file# || ' to '|| '''' || '$TARGET_DATA_FILE_PATH' || substr(name,INSTR(name,'/',-1,1)) || '''' || ';' from v\$datafile; select 'restore database;' || chr(10) || 'switch datafile all;' || chr(10) || '}' from dual; spo off exit; EOF

echo "gen restore rman_scripts end status $?"

echo "begin rman restore ....."
echo `date`
rman target / log rman_auto_restore_`date -I`.log @restore.rman
echo "begin rman restore over! status: $?"
echo `date`