I know this is old but you can use dbconnect to grab data direct from tables.
Have you made any progress passing this data from solarwinds to Splunk? I'm currently looking into better integration documentation for SolarWinds --> Splunk.
Sure ... but is it possible to export , redirect , copy the solar winds to Splunk ?
Have a look at the docs here on how to get data into splunk:
http://docs.splunk.com/Documentation/Splunk/latest/Data/WhatSplunkcanmonitor