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How can I get an e-mail alert when my oracle database comes up or down?

I have a database that I need to know when it goes down (it would be nice to know if it has come back up), preferably from a remote machine. Conceivably I could hack together something that TNSPings my DB and e-mails me when that changes, but I'm hoping there's a free package out there. Something that would run on windows.

Any strong recommendations?

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Take a look a

I 've used this in the past to monitor a small network. You can also add checks to test, if services (e.g. Oracle Listener) are available.

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Excellent, it's free and it works on windows. I'll see if I can get it to work. – BIBD Mar 19 '10 at 19:18

Use Nagios, it's free and have Oracle connectors

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You can use system triggers to do some of this. You could combine the trigger with the use of the UTL_MAIL package. You might be able to use dbms_scheduler if you're monitoring via another database.

Additional info: I found DBUptime on Burleson's Guide to free Oracle Utilities Page. Maybe that's more what you want.

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close... triggers would not be remote, and the other solution not really free (free to try though). – BIBD Mar 17 '10 at 18:19
Sorry, $39 is as close to free as I can find :-| – DCookie Mar 17 '10 at 19:51

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