Oracle automatic backup case on Linux platform (using RMAN)

There is an automatic backup script program that asks rman. I have previously written an automatic backup case for the exp backup specific solution (Oracle automatic backup case on Linux platform (using exp tool )), now I want to add the rman case.
To this end, write the following content and only record and share the process.

Environment:
Operating System: RHEL5.4
Database: Oracle 10.2.0
Related variable values:
ORACLE_BASE =/u01/app/oracle
ORACLE_HOME =/u01/app/oracle/product/10.2.0/db_1
Backup database instance name: test
Target directory of the backup:/backup_rman

The implementation process is as follows:
Step 1: Prepare the Directory
Mkdir/backup_rman
Chown oracle: oinstall/backup_rman
Chmod 755/backup_rman

Step 2: Write the backup script program
1. Create a backup script
Switch to the oracle user, create the bin directory under the oracle Home directory, and create the file rman_backup.sh
Mkdir bin
Cd bin
Touch rman_backup.sh
Chmod 755 rman_backup.sh
Edit the rman_backup.sh file and add the following content:
#! /Bin/bash
Source/home/oracle/. bash_profile
/U01/app/oracle/product/10.2.0/db_1/bin/rman target/nocatalog export file =/home/oracle/bin/rman_cmd log =/backup_rman/rman_full _ 'date + % Y % m % d % H % M '. log
2. Create a backup script file for rman
Cd ~ /Bin
Touch rman_cmd
Edit the rman_cmd file and add the following content (you can modify the content as needed ):
Crosscheck archivelog all;
Delete noprompt expired archivelog all;
Run {
Configure retention policy to recovery window of 4 days;
Configure controlfile autobackup off;
Allocate channel c1 device type disk format'/backup_rman/rman_full _ % T _ % U' maxpiecesize = 3G;
Allocate channel c2 device type disk format'/backup_rman/rman_full _ % T _ % U' maxpiecesize = 3G;
Allocate channel c3 device type disk format'/backup_rman/rman_full _ % T _ % U' maxpiecesize = 3G;
Backup database plus archivelog delete all input;
Backup current controlfile format '/backup_rman/rman _ % T_CTL _ % U ';
Backup spfile format '/backup_rman/rman _ % T_SPFILE _ % U ';
Release channel c1;
Release channel c2;
Release channel c3;
}
Crosscheck backupset;
Delete noprompt expired backup;
Delete noprompt obsolete;
Crosscheck archivelog all;
Delete noprompt expired archivelog all;

Step 3: Add a crontab to schedule a task
Use oracle users to add routine tasks:
Crontab-e
Add the following content to the new window:
0 24 ***/home/oracle/bin/rman_backup.sh
(*/3 *****/home/oracle/bin/rman_backup.sh)
Note: The brackets can be used for testing. A backup is performed every three minutes. For example, a backup is performed every 24 o'clock every day.

Step 4: perform verification:
1. The crontab is successfully verified:
Run tail-f/var/log/cron under root to monitor cron logs to ensure successful execution of crontab:
Aug 31 00:20:06 model crontab [6380]: (oracle) begin edit (oracle)
Aug 31 00:20:48 model crontab [6380]: (oracle) REPLACE (oracle)
Aug 31 00:20:48 model crontab [6380]: (oracle) end edit (oracle)
Aug 31 00:21:01 model crond [1, 26958]: (oracle) RELOAD (cron/oracle)
Aug 31 00:21:01 model crond [1, 6412]: (oracle) CMD (/home/oracle/bin/rman_backup.sh)
Aug 31 00:24:01 model crond [1, 6621]: (oracle) CMD (/home/oracle/bin/rman_backup.sh)

2. Check whether rman is executed and the execution is successful.
A. Execute ps-ef | grep rman | grep-v grep during rman execution to check whether the rman process has been started successfully.
B. Check whether the/backup_rman directory contains the files generated by the backup:
$ Oracle @ model/backup_rman> ls
Rman_20120831_CTL_0mnjvu15_1_1 rman_full_20120831_0injvtrq_1_1
Rman_20120831_CTL_0vnjvu57_1_1 rman_full_20120831_0jnjvtvs_1_1
Rman_20120831_SPFILE_0nnjvu18_1_1 rman_full_20120831_0knjvu0c_1_1
Rman_20120831_SPFILE_10njvu5a_1_1 rman_full_20120831_0lnjvu13_1_1
Rman_full_201208310021.log rman_full_20120831_0onjvu1a_1_1
Rman_full_201208310024.log rman_full_20120831_0pnjvu1e_1_1
Rman_full_20120831_0dnjvtrg_1_1 rman_full_20120831_0qnjvu1e_1_1
Rman_full_20120831_0enjvtrg_1_1 rman_full_20120831_0rnjvu1i_1_1
Rman_full_20120831_0fnjvtrg_1_1 rman_full_20120831_0snjvu4s_1_1
Rman_full_20120831_0gnjvtrp_1_1 rman_full_20120831_0tnjvu52_1_1
Rman_full_20120831_0hnjvtrp_1_1 rman_full_20120831_0unjvu55_1_1

Verification Result: the automatic rman backup task is successfully executed!

Recommended reading:

Basic Oracle tutorial-copying a database through RMAN

Reference for RMAN backup policy formulation

RMAN backup learning notes

Oracle Database Backup encryption RMAN Encryption