When adding final touches to the configuration files, pay close attention to default_pool_size in pgbouncer.ini and num_init_children in pgpool.conf. Since pgpool doesn't like having more connections than num_init_children, no PgBouncer pool should exceed this number of connections. Thus, the value of default_pool_size added to reserve_pool_size should always be equal to or less than num_init_children in PgBouncer.
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