QUESTION POSED ON: 20 December 2006 I have RH Enterprise Linux AS3 and am running Oracle 9i. My concern is whether there is any way to know whenever the Oracle database/instance goes
down due to any reason. It may generate an email to me. I simply want to stay in touch with whether Oracle is running or not, i.e., it only sends me
an email alert that Oracle services are down.
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There are many tools available to monitor the database services and to
register an alert via page and/or email when they are not running.
Enterprise Manager is obviously the most tightly integrated, but other
products such as Big Brother from Quest and Nagios can do this as well.
Currently I have Big Brother monitoring the existence of the smon processes
of all my database instances and paging me when they are not available.
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