crontab+rman定期删除Oracle测试库的归档日志

1、删除的脚本如下，各种环境变量，通过env来获取。若不列出环境变量，则crontab在调度脚本的时候，会提示找不到命令之类的错误

cat clearLog.sh

export ORACLE_HOME=/path/rdbms/12c/12.1.0.2.160119

export SHELL_PATH=/etc/paic/shell

export XDG_SESSION_ID=283283

export HOSTNAME=cnsh281177

export SHELL=/bin/bash

export TERM=vt100

export HISTSIZE=1000

export NLS_LANG=AMERICAN_AMERICA.AL32UTF8

export ORACLE_DOC=/path/rdbms/doc

export OLDPWD=/path/rdbms/toracle

export USER=toracle

export LD_LIBRARY_PATH=:/path/rdbms/12c/12.1.0.2.160119/lib:/paic/app/t0parebi/goldengate:/path/rdbms/12c/12.1.0.2.160119/lib

export ORACLE_SID=t0parebi

export ORACLE_BASE=/path/rdbms

export TMOUT=1800

export GGS_HOME=/paic/app/t0parebi/goldengate

export MAIL=/var/spool/mail/toracle

export PATH=/path/rdbms/12c/12.1.0.2.160119/bin:/path/rdbms/toracle/sh:/oracle_grid/12.1.0/grid/bin:/sbin:/usr/sbin:/opt/VRTS/bin:/opt/VRTSvcs/bin:/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin:/paic/app/t0parebi/goldengate

export ORA_ENCRYPT_LOGIN=true

export PWD=/path/rdbms/toracle/zad

export EDITOR=vi

export LANG=en_US

/path/rdbms/12c/12.1.0.2.160119/bin/rman nocatalog log /path/rdbms/toracle/zad/del_arch`date +%Y%m%d`.log  <<EOF

connect target /  

#crosscheck archivelog all;  

#delete noprompt expired archivelog all;  

DELETE noprompt ARCHIVELOG ALL COMPLETED BEFORE 'SYSDATE-2';  

exit;  

EOF

2、编写crontab

crontab -l

53 09 * * * /path/toracle/zad/clearLog.sh

注：

这里在调试程序时，手动运行脚本并不报错。

但通过crontab来调度的时，会出现问题。出错的日志，见/var/spool/mail/os用户
如下日志报错，可以看到是因为没有设置环境变量ORACLE_HOME，导致rman在执行操作时出错。

tail -20 /var/spool/mail/toracle

Message-Id: <20170710014601.3B21D1801010@cnsh281177.localdomain>

Date: Mon, 10 Jul 2017 09:46:01 +0800 (CST)

Message file RMAN<lang>.msb not found

Verify that ORACLE_HOME is set properly