rman全备shell脚本

#!/bin/bash 
#这个是rman全备shell脚本 
#date 2019-02-27
#定义全局变量ORACLE_SID、ORACLE_HOME、ORACLE_BASE、NLS_LANG
export ORACLE_SID=or11g 
export ORACLE_HOME=/u01/app/oracle/product/11.2.0/db_4 
export ORACLE_BASE=/u01/app/oracle 
export NLS_LANG="SIMPLIFIED CHINESE_CHINA.ZHS16GBK" 
#定义变量backuptime，用于保存备份文件和备份日志
backuptime=`date +"20%y%m%d%H%M%S"` 
backup_dir=/u01/app/$backuptime
if [[ ! -e "$backup_dir" ]]
then
        mkdir -p $backup_dir
        touch $backup_dir/log
        chown -R oracle:oinstall $backup_dir
        chmod -R 775 $backup_dir
fi
su - oracle 1>$backup_dir/log 2>&1 <