These are two seperate products.
So if you isolated them in terms of weblogic server , then you can use different(supported) jdk versions for each of them.
However, I didn't do it before.
java 1.7.41 has lots of security enhancements.
These enhancements sometimes create problems (if you don't play the game by its rules)
Probably, a security thing was blocking you.
anways, thanks for the update.
I have been in same error after fresh installation.
I tried the referenced (Doc ID 2008417.1) and found that the configuration was correct.
After full day of searching I went beck to re-installation of OIAM and creating new domain and the error gone.
I'm using the java version included with OIAM downloads 1.7U80.
one issue I should mention, it might be the cause. in installation I pointed jrelog to jdk directory not the jre