RE: plpgsql.so location.
Sounds like Phillip made the edit for the RPM postgresql, and is running with the non-RPM postgresql tarball installation.
Sounds like Phillip made the edit for the RPM postgresql, and is running with the non-RPM postgresql tarball installation.
/usr/lib/pgsql is where the RPM puts some of the PostgreSQL files, including pltcl.so and plpgsql.so.