No subject

pgpool-II-pg93-3.3.4-2.pgdg.x86_64.rpm:
pgpool-II main package. Should be installed into the server which pgpool-II is running on.

pgpool-II-pg93-extensions-3.3.4-2.pgdg.x86_64.rpm:
PostgreSQL extension to be installed into each PostgreSQL server.

In summary, you don't need to install pgpool-II main package
(pgpool-II-pg93-3.3.4-2.pgdg.x86_64.rpm) into PostgreSQL server
anymore. You just install
pgpool-II-pg93-extensions-3.3.4-2.pgdg.x86_64.rpm onto PostgreSQL
server.

Same thing can be said to:
pgpool-II-pg92-3.3.4-2.pgdg.x86_64.rpm
pgpool-II-pg92-extensions-3.3.4-2.pgdg.x86_64.rpm
pgpool-II-pg92-devel-3.3.4-2.pgdg.x86_64.rpm

Best regards,
--
Tatsuo Ishii
SRA OSS, Inc. Japan
English: http://www.sraoss.co.jp/index_en.php
Japanese:http://www.sraoss.co.jp