Thanks to Tamzin Oscroft for providing this article!
Remote Diagnostic Agent (RDA) is a command line-driven data collection framework that can gather product and environmental information to assist in problem diagnosis. Full information on RDA is available in Remote Diagnostic Agent (RDA) – Getting Started (DocID 314422.1).
The new 18.2 release includes Healthcheck reports for Fusion Middleware 126.96.36.199.0 and configurable modules to collect PeopleSoft information from Tuxedo Application Server and Process Scheduler. Oracle Access Manager and WebCenter collections have been extended to run on 12c, and the Business Intelligence (BI) module now collects patching logs. Complete details for this release are available in RDA Release Notes (Doc ID 414970.1).
This RDA release is bundled with the 2.12.0 release of Diagnostic Assistant (DA). The DA tool is a command line interface framework designed to simplify and standardize the end user’s experience with various diagnostic tools, providing a common lightweight extensible interface to multiple collection tools like ADR, RDA, OCM, and Explorer. DA packages can also work with Oracle applications (JDE EnterpriseOne, Siebel, PeopleSoft) as verifiers, providing a basic Java interface to facilitate the user’s data collection. For more information about DA functionalities, refer to Diagnostic Assistant: Information Center (Doc ID 201804.2).