Oracle Security

OEM and the Event Management System

The Event Management System provided by OEM enables you to define events you want the intelligent agent on a platform to watch for within one or more of your databases on that machine. For example, perhaps you would like to catch a high volume of I/O contention occurring within a specific database. The Event Manager can perform that activity.

The Event Management System provides you with a way to proactively monitor for specific events on each of your databases. Many of the monitoring options, like the database UpDown (indicating whether the database is up or down), the alert log being written to, and the number of processes or users exceeded, can be used to help ensure that your database is better protected and more secure.

There are several categories of event types Oracle has predefined and made available; these are broken down by the system events they will affect as follows:

• Fault Management events

• Space Management events

• Resource Management events

• Performance Management events

The following sections examine each category, and the events within, to see which events might either enhance or endanger your security system.

Fault Management events

You can configure the Event Management System to monitor for the following Fault Management events:

• New values being written to the alert log (Alert option)

• Cases where a user is being blocked from being able to perform an action (User Blocks)

• Whether the database is up or down (UpDown)

• The inability ...