oracle backup

#!/bin/bash
#oracle_backup.sh version1.0 chmod 700
#00 00 * * * /usr/local/scripts/oracle_backup.sh
#chmod 700 /usr/local/scripts/oracle_backup.sh
#You must first import the environment variables in the Oracle user’s bash_profile file
#Must be used to define the DBA account first dpdata1 path and authorized directory to read and write, modify the dpdata1 group

export ORACLE_BASE=/usr/local/u01/oracle
export ORACLE_HOME=/usr/local/u01/oracle/product/11.2.0/dbhome_1
export ORACLE_SID=oracle11
export LD_LIBRARY_PATH=$ORACLE_HOME/lib
export PATH=$ORACLE_HOME/bin:$PATH
datetime=$(date +”%Y%m%d”)
dpdata1_dir=”/data/backup/oracle_backup”
oracle_u01=”u01″
oracle_u02=”u02″
oracle_password1=”u01_password”
oracle_password2=”u02_password”

expdp ${oracle_u01}/${oracle_password1} directory=dpdata1 dumpfile=${oracle_u01}_${datetime} logfile=${oracle_u01}_${datetime}.log

if [ $? -ne 0 ];then
echo “$(date +”%Y-%m-%d_%H:%M:%S”)oracle_${oracle_u01}_backup_file!” > ${dpdata1_dir}/${datetime}_err.log
fi

expdp ${oracle_u02}/${oracle_password2} directory=dpdata1 dumpfile=${oracle_u02}_${datetime} logfile=${oracle_u02}_${datetime}.log

if [ $? -ne 0 ];then
echo “$(date +”%Y-%m-%d_%H:%M:%S”)oracle_${oracle_u02}_backup_file!” >> ${dpdata1_dir}/${datetime}_err.log
fi

/usr/bin/bzip2 -z ${dpdata1_dir}/*${datetime}*
find $dpdata1_dir -type f -ctime +30 -name “*.bz2” -exec rm -vf {} \;