Pgbouncer version 1.7.2
PostgreSQL version 9.5.6

авторcat pgbouncer.ini | grep -v ";" | grep -v "^$"
[databases]
*= host=127.0.0.1 port=5432 auth_user=postgres
[pgbouncer]
logfile = /var/log/pgbouncer/pgbouncer.log
pidfile = /var/run/pgbouncer/pgbouncer.pid
listen_addr = *
listen_port = 6432
#auth_type = plain
#auth_hba_file = /etc/pgbouncer/auth_file
auth_query = SELECT usename, passwd FROM pg_shadow WHERE usename=$1
admin_users = postgres
stats_users = stats, postgres
pool_mode = transaction
server_reset_query = ROLLBACK; SELECT pg_advisory_unlock_all(); DISCARD ALL;
ignore_startup_parameters = extra_float_digits
max_client_conn = 100
default_pool_size = 100

авторtail -fn10 /var/lib/pgsql/9.5/data/pg_log/postgresql-Thu.log
ERROR: prepared statement "S_1" already exists
STATEMENT: ROLLBACK
ERROR: prepared statement "S_2" already exists
STATEMENT: ROLLBACK
FATAL: role "root" does not exist

Application - Java в Tomcat.

Скажите пожалуйста поправить конфиг чтобы PostgreSQL не ругался repared statement "S_1" already exists ?

Спасибо