RDA

review, download and run the ./rda.sh script as described in Note: 250262.1

other notes for rda
Note: 314422.1 - Remote Diagnostic Agent (RDA) 4 - Getting Started
Note: 330363.1 - Remote Diagnostic Agent (RDA) 4 - FAQ
Note: 330344.1 - Remote Diagnostic Agent (RDA) 4 - Training
Note: 330362.1 - Remote Diagnostic Agent (RDA) 4 - Troubleshooting Guide

To simplify RDA configuration, use an RDA profile, and the best choice is the DB9i profile, even for 10g or 11g, because the DB10g profile is a superset of DB9i that adds stuff we don't care about (for DB Install). First set the ORA* environment variables for the DB of interest, then run the RDA config pass:

Unix:
cd {dir you unzipped RDA into}
export ORACLE_HOME={dir}
export ORACLE_SID={name}
./rda.sh -Syvp DB9i

Next, edit the resulting setup.cfg file, search for 'sysdba' (first hit will be a comment), and change the 2 lines directly above and below as follows:
for SQL_LOGIN= replace 'system' with '/' and for SQL_SYSDBA= replace 0 with 1
then save it, and run the (rda) command again, with no arguments this time:
Unix:
./rda.sh
The output subdirectory will contain a new RDA*.zip file for you to upload