Table of contents
Write automatic backup script Centos7 execution script
Set up automatic execution using the crontab command
It is not easy to organize, please read carefully, I hope it will be helpful to you
pay attention
Set up automatic backup to ensure that the database and monitoring are started, and the database can be connected normally. If there are any problems with the installation of the database, you can check the homepage for detailed tutorials.
Configure export folder
Create the folder mkdir oracle_dmp in the virtual machine
View current path pwd copy path
Open plsql and log in to the sys account
1.Set the exported dmp file storage directory
create or replace directory expdp_dir as '/opt/oracle_dmp';
Check the administrator directory to see if it exists
select * from dba_directories；
2. Authorize directory permissions (query the specified directory sql select * from dba_directories)
grant read,write on directory expdp_dir to username;
3.Linux grants folder permissions to the Oracle user
chown -R oracle:oinstall /opt/oracle_dmp
chmod -R 775 /opt/oracle_dmp
4. Execute the command success case (test whether the export is successful)
expdp c_yhpt_etl/[email protected]:1521/oradb DIRECTORY=expdp_dir dumpfile=yhjw%DATE%.dmp schemas=c_yhpt_etl compression=ALL logfile=yhjw%DATE%.log
Write automatic backup script Centos7 execution script
(1) Write the oracle_bak.sh script
# vi /opt/oracle_dmp/oracle_bak.sh
The content is as follows:
#!/bin/sh
echo "Start data backup now..."
export PATH
export ORACLE_SID=oradb
export ORACLE_HOME=/opt/oracle/product/19c/dbhome_1/
export PATH=$ORACLE_HOME/bin:$PATH
export LANG=C
export NLS_LANG=AMERICAN_AMERICA.ZHS16GBK
date_now=$(date +%Y%m%d) #Get the current time
days=7 #Set to delete backup files 7 days ago
bak_dir=/opt/oracle_dmp #The actual storage path of the backup, backdir is the path defined in the directory
dmpname=tp_data
schname=c_yhpt_etl #Backup users, separated by English commas
expdp c_yhpt_etl/[email protected]:1521/oradb DIRECTORY=expdp_dir schemas=$schname dumpfile=$dmpname_$date_now.dmp logfile=$dmpname_$date_now.log compression=ALL #Execute backup specification> database
echo "Data backup ends..."
echo "Now start compressing backup data..."
tar -zcvf $ordatabak_$date_now.tar.gz $dmpname_$date_now.dmp $dmpname_$date_now.log
echo "Compressing backup data ends..."
echo "Start deleting backup data..."
find $bak_dir -type f -name "*.dmp" -exec rm -rf {} \;
find $bak_dir -type f -name "*.log" -exec rm -rf {} \;
find $bak_dir -type f -name "*.tar.gz" -mtime +$days -exec rm -rf {} \;
echo "Deleting backup data ends..."
echo "Backup completed..."
The homepage has a script file
(2) Authorization
chmod +x /opt/oracle_dmp/oracle_bak.sh
(3) Execute test
sh oracle_bak.sh start
Set up automatic execution using the crontab command
(1) View the current scheduled tasks: crontab -l
(2) Use crontab to execute tasks regularly: crontab -e to enter the scheduled task editing interface
0 22 * * * /opt/oracle_dmp//oracle_bak.sh #Execute at 10pm every day
0 22 * * 6 /opt/oracle_dmp//oracle_bak.sh #Execute every Saturday at 10pm
Introduction to crontab operation commands
View crontab: crontab -l Edit crontab: crontab -e Delete crontab: crontab -r
Start: systemctl start crond.service
Stop: systemctl stop crond.service
Restart: systemctl restart crond.service
Set up auto-start at power on
Set crontab to start automatically at boot
# because /etc/rc.d/rc.local
Add the following:
systemctl start crond.service
