The mod_php3 RPM from the errata is not really compiled with postgresql support, as the errata info would lead one to believe. To enable postgresql support, the line in the SPEC file "--with-postgresql" must be changed to "--with-pgsql=/usr/lib/pgsql"
rather, that should be "--with-pgsql", with no directory specified -- sorry, I spoke too soon
*** Bug 3384 has been marked as a duplicate of this bug. *** The .spec file uses --with-postgresql. It SHOULD read, "--with-pgsql".
*** This bug has been marked as a duplicate of 2593 ***