How to monitor Oracle listener

[luissuez]

Hello people !!
I need to monitor the listener process with linux server and zabbix version 2.2
I have this trigger set:

{orax56: system.run ["ps -ef | grep tnslsnr | grep -iv grep | wc -l"].last (0)} < 1

So if this linux command give any value < 1 is that listener is down.
But I have a syntax error... Some one can see what error is?

I try this command from zabbix server:

 zabbix_get -s 127.0.0.1 -k system.run["echo 123"]
ZBX_NOTSUPPORTED: Remote commands are not enabled.

SO, does it means that I need to enableRemoteCommand from zabbix Server?
Many thanks

[luissuez]

Hello

ok, I think I got it, this trigger code works, I share it with you if someone need it, or can improve this method.

{[URL="http://10.3.1.203/zabbix/items.php?form=update&itemid=74821&sid=27f7327c66ff3eca"]orax56:proc.num[tnslsnr,oracle][/URL].[B]last([/B][B])[/B]}=0