You need to load the SQLJ modules in the content repository.
telnet in to your machine as oracle.
cd /web/servername/packages/acs-content-repository/java
Now do loadjava -resolve Util-oracle.sqlj user/pass@SID
Then load the other two sqlj files.
It should work after that, although you may get an error, because it looks like it didn't load these files when you created your server. I found a fix for this was to do:
set LANG
then reload the sqlj files.