Nagios自带的Oracle监控check_oracle功能较少，可以采用perl写的check_oracle_health脚本
1、安装check_oracle_health
wget http://www.linuxidc.com/system/systembak/2011/2/check_oracle_health-1.6.6.1.tar.gz
wget http://www.linuxidc.com/system/systembak/2011/2/check_oracle_health-1.6.3.tar.gz
版本任意选（此处使用1.6.3)
tar zxvf check_oracle_health-1.6.3.tar.gz
cd check_oracle_health-1.6.3
./configure --prefix=/usr/local/nagios/ --with-nagios-user=nagios --with-nagios-gourp=nagios --with-mymodules-dir=/usr/local/nagios/libexec/ --with-mymodules-dyn-dir=/usr/local/nagios/libexec/
#指定用户、用户组以及目标路径等
make all
make install
2、设定系统环境变量
在下，编辑.bash_profile，插入oracle用户的环境变量，要和oracle用户的.bash_profile文件中设置的一样
export PATH
unset USERNAME
PS1="[e[0m][u@[e[32;1m]`/sbin/ifconfig eth0 | grep "inet addr" | sed -e "s/^.*inet addr:(.*) Bcast.*$/1/"`[e[0m]W]# "
export PS1
3、安装perl的oracle插件
① wget http://search.cpan.org/CPAN/authors/id/T/TI/TIMB/DBI-1.609.tar.gz
tar zxvf DBI-1.609.tar.gz
cd DBI-1.609
perl Makefile.PL
make all
make install
② wget http://cpan.wenzk.com/authors/id/P/PY/PYTHIAN/DBD-Oracle-1.24a.tar.gz
tar -zxvf DBD-Oracle-1.24a.tar.gz
cd DBD-Oracle-1.24
perl Makefile.PL #此处如果之前不设定root的oracle环境变量会报错
make all
make install
③ 如果在运行脚本时报错
Can't locate Time/HiRes.pm in @INC (@INC contains: /usr/lib64/perl5/5.8.5/x86_64-linux-thread-multi
wget http://www.perl.com/CPAN/modules/by-module/Time/Time-HiRes-01.02.tar.gz
tar zxvf Time-HiRes-01.02.tar.gz
cd Time-HiRes-01.02
perl Makefile.PL
make all
make install
4、测试
cd /usr/local/nagios/libexec
./check_oracle_health --connect=nagios --username system --password ora123 --mode connected-users
OK - 11 connected users | connected_users=11;50;100
./check_oracle_health --connect=nagios --username system --password ora123 --mode=tnsping
OK - connection established to nagios.
5、其余配置和nagios配置相同