Enterprise IT practices may require that responses to certain event occurrences be handled in certain ways. For example, if the database updown event triggers, administrators may want to automatically open an in-house trouble-ticket so that the appropriate IT staff can respond to this event occurrence. An administrators may also want to have all crucial event information rolled up into 3rd party framework vendor software. The ability to provide customized automatic responses to event occurrences can be achieved by using the Event Handler or traditional SNMP.

Event Handler

The Event Handler is an integral part of the Oracle Management Server. It listens for event notifications and responds to these events in ways specified by the administrator. The Event Handler's response capability is performed by its two components:

• Event Logger - allows the Event Handler to log events to designated log files where 3rd party log reader tools can import them to their desired software, i.e., Tivoli's logfile reader.
• Command Executor - executes simple commands in response to event occurrences. The command executor looks at a set of user-defined templates to decide what command to execute in response to event occurrences. i.e., customized executables can be designed to pass the desired event information to any 3rd party software such as Enterprise Manager's Integration solution with HP OpenView.

You can use either or both components in response to a triggered event.

Event Handler Process:

Prior to passing event notifications for further processing, the Event Handler also provides a simple filtering mechanism that allows system administrators to specify the conditions by which the events are passed to either or both components.

Oracle Simple Network Management Protocol

The Simple Network Management Protocol (SNMP) is acknowledged as the published, open standard for heterogeneous network management applications.

Designed primarily for database, network, and system administrators, Oracle SNMP Support integrates the management of Oracle products into a number of existing, widely-used management systems. This feature enables key Oracle products running anywhere on an enterprise's network to be located, identified, and monitored by a management station running at a centrally located node, in much the same way and using much the same tools as traditionally have been used to monitor the activity of the network itself. It thereby integrates the tasks of database and of network administrators, enabling both to use some of the same tools and to better integrate their tasks. Tools using SNMP traditionally provide powerful features for monitoring network components. Oracle extends this power to enable SNMP monitoring of some of its own products.

Besides its network administration capabilities, Oracle SNMP support allows an Oracle database server to be located and queried by any SNMP-based network management system. SNMP is the accepted standard underlying many popular network management systems such as:

• HP's OpenView
• Digital's POLYCENTER Manager on NetView
• IBM's NetView/6000
• IBM's Tivoli
• Novell's NetWare Management System
• SunSoft's SunNet Manager
• CA Unicenter