Install SUN/Oracle JDK and PostgreSQL via zypper or Yast.

Download pljava here http://pgfoundry.org/frs/?group_id=1000038&release_id=1024

Create a directory for example /usr/src/pljava and extract pljava there.

create /etc/ld.so.conf.d/postgres.conf with this two lines in it if your using …