pgpool-II: pgpool-II (Connection pooler for PostgreSQL) pgpool-II: pgpool-II: pgpool-II is a middleware that works between PostgreSQL servers and a pgpool-II: PostgreSQL database client. It is licensed under BSD license. It pgpool-II: provides the following features: Connection Pooling, Replication, pgpool-II: Load Balance, Limiting Exceeding Connections and Parallel Query. pgpool-II: pgpool-II: pgpool-II: pgpool-II: http://www.pgpool.net pgpool-II: