The Grid Control framework includes the underlying component pieces that provide the ability to centrally manage your computing environment. These component pieces include: Oracle Management Repository (OMR) One or more Oracle Management Services (OMSs) One or more Oracle Management Agents (OMAs) This framework can be on a single server or distributed across multiple servers depending on the needs of the business and the size of the enterprise being managed.

[@more@]Grid Control manages all currently supported versions of the Oracle database, Oracle 9i Application Server release 2, and Oracle Application Server 10g. Grid Control can also be extended to monitor custom targets such as routers, storage area networks, and many other systems. Oracle Management Agent (OMA) monitors managed targets. OMAs collect information about target availability, configuration, and performance and pass that information to an Oracle Management Service (OMS). Each OMA talks to one and only one OMS, but an OMS may service hundreds of OMAs. There is one Management Agent installed on each host server that monitors all the targets of that node. Management Agents are installed in their own ORACLE_HOME and controlled with the emctl utility. Oracle Management Services pass information received from OMAs to Oracle Management Repository (OMR). An OMS talks to one and only one OMR, although an OMR may service many OMSs. OMS is also the point of connection for the administrator, producing the Grid Control console Web pages from information contained within OMR, and passing commands from the administrator to the appropriate OMA. OMR is a collection of schema objects within an Oracle database. OMR provides a single point of service for information about the grid’s availability, performance, and configuration.