[From builderau.com.au]
Although the DBA can resolve most problems that arise with Oracle databases, there are times when you need to file a Service Request (SR) with Oracle Support. The Remote Diagnostic Agent (RDA) shortens the time it takes for the Oracle engineer to become familiar with your system.
Service Requests are also known by the old term Technical Assistance Request, or TAR, which is still used by many DBAs to refer to SRs.
The article continues at
http://www.builderau.com.au/program/oracle/soa/Practice-using-Oracle-s-Remote-Diagnostic-Agent-before-you-need-it/0,339028441,339281838,00.htm
