How to configure WebCenter 11g (PS2) with UCM 11g
By Kyle Hatlestad on Oct 22, 2010
Because UCM 11g was released after the last WebCenter 11g (PS2) release, a separate certification process needed to be done to ensure that both versions were compatible. That has since been done and now Support has just written a support bulletin which outlines how to configured WebCenter 11g (PS2) with UCM 11g.
You can find the article on the Support site.