It is another key piece in Oracle??™s long list of high-availability solutions, tying together
and enhancing Oracle??™s message queuing, data replication, and event management functions.
More information on how to implement Oracle Streams can be found in Chapter 17.
Oracle Enterprise Manager
Oracle Enterprise Manager (OEM) is a valuable set of tools that facilitates the comprehensive
management of all components of an Oracle infrastructure, including Oracle database instances,
Oracle application servers, and web servers. If a management agent exists for a third-party
application, then OEM can manage the third-party application in the same framework as any
Oracle-supplied target.
OEM is fully web-enabled via Netscape or Internet Explorer, and as a result any operating
system platform that supports Netscape or IE can be used to launch the OEM console.
One of the key decisions to make when using OEM with Oracle Grid Control is the location
to store the management repository. The OEM management repository is stored in a database
separate from the nodes or services being managed or monitored. The metadata from the nodes
and services is centralized and facilitates the administration of these nodes. The management
repository database should be backed up often and separately from the databases being managed.
An installation of OEM provides a tremendous amount of value ???out of the box.??? When the
OEM installation is complete, e-mail notifications are already set up to send messages to the
SYSMAN or any other e-mail account for critical conditions, and the initial target discovery is
automatically completed.
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