Enterprise Manager provides out-of-box rule sets for incident creation and event clearing based on typical scenarios. Out-of-box rule sets cannot be edited or deleted, however, they can be disabled. As a best practice, you should create your own copies of out-of-box rule sets and then subscribe to the rule set copies rather than subscribing directly to the out-of-box rule sets. Effectively, you are making a copy of the rule set and changing the target criteria to fit your enterprise needs by selecting an appropriate group of targets (preferably an administration group).

Note that out-of-box rule set definitions and actions they perform can be changed by Oracle at any time and will be applied during patching or software upgrade.

Regular Enterprise Manager administrators are allowed to perform the following operations on rule sets:

• Subscribe for email notifications

• Unsubscribe from email notifications

• Enable

• Disable

Enterprise Manager Super Administrators have the added ability to reorder the rule sets.

Enterprise rule sets are evaluated sequentially and may go through multiple passes as needed. When there is a change to the entity being processed - such as an incident being created for an event or an incident priority changing due to a rule - we rerun through all the rules from the beginning again until there are no matches. Any rule that is matched in a prior pass will not match again (to prevent infinite loops).

For example, when a new event, incident, or problem arises, the first rule set in the list is checked to see if any of its member rules apply and appropriate actions specified in those rules are taken. The second rule is then checked to see if its rules apply and so on. Private rule sets are only evaluated once all enterprise rule set evaluations are complete and in no particular order.