There's an option to ignore parameters in pgbouncer's config. Here's an SO
answer that gives an example: https://stackoverflow.com/a/36911794
On Wed, 16 Jul 2025, 09:19 KK CHN, <kkchn...@gmail.com> wrote:
> Hi,
>
> I am facing an issue with PgBouncer-Postgres setup,
>
> *PgBouncer (PgBouncer 1.23.1 running on VM instance FreeBSD 14.2) and
> PostgreSQL DB cluster on a virtual machine (PG version 16.0, RHEL 9.4) *.
>
>
>
> My application backend is nodeJS which throws the following Error in the
> nodejs console log: when connecting through pgbouncer to the backend
> database server...
>
> ERROR thrown:
>
> my-node>* Failed to connect to PostgreSQL database transaction_db :
> unsupported startup parameter: statement_timeout *{"code":"08P01",
> "length":69, "name": "error", xx xx
> my-node> error:[object Object ] {"timestamp":"15-07-2025 10:14:26"} x x xx
>
>
> Note: The nodejs apps earlier directly establishing connections to the
> PostgreSQL DB ( no such errors) now redirected via Pgbouncer throws
> this error.
>
>
>
> *The config parameters for pgbouncer as follows(correct me if any
> mistakes made)*
> [root@pgbouncer ~]# grep ^[^';;;'] /usr/local/etc/pgbouncer.ini
> [databases]
> transaction_db = host=dbmain.mydomain.com port=5444 dbname=transaction_db
>
> [users]
> [pgbouncer]
> Logfile = /var/log/pgbouncer/pgbouncer.log
> pidfile = /var/run/pgbouncer/pgbouncer.pid
> listen_addr = *
> listen_port = 5444
> auth_type = md5
> auth_file = /usr/local/etc/pgbouncer.users
> admin_users = adminuser
> stats_users = adminuser,
> pool_mode = transaction
> server_reset_query = DISCARD ALL
> server_reset_query_always = 1
> ignore_startup_parameters = extra_float_digits // I have added this also
> or can I add these options too in the following line ?
> ;; ignore_startup_parameters = extra_float_digits, options,
> statement_timeout, idle_in_transaction_session_timeout // doubt options
> supported in latest versions ?
>
> max_client_conn = 5000 // can I give this much high value ?
> default_pool_size = 20
> min_pool_size = 10
> reserve_pool_size = 10
> reserve_pool_timeout = 5
> max_db_connections = 100
> max_user_connections = 30
> server_lifetime = 3600
> server_idle_timeout = 600 // is this a low value or need to be increased ?
> [root@pgbouncer ~]#
>
>
>
> The config params of N*odeJS application which uses nodejs connection
> pooling in* code as follows
>
> the Node JS application using the following nodejs pooling configurations
> for the application level
>
> *cat app_10072025/config/pg-pool-config.js*
> .......
>
>
>
>
>
>
>
>
> *const poolOptions = { max: 10, min: 2, idleTimeoutMillis:
> 600000, //Idle for 5Min connectionTimeoutMillis: 10000, //Reconnect
> 10sec statement_timeout: 60000, //Query executiion 1 min acquire:
> 20000, maxUses: 1000 //reconnect after 1000 queries};*
>
> const pools = {
>
> transaction_db: new Pool({
> connectionString: `postgresql://${DB_USER}:${DB_PASSWORD}@
> ${DB_HOST}:${DB_PORT}/${DB_NAME_TRANSACTION_DB}`,
> ...poolOptions,
> }),
> };
>
> ..................................
>
> Any hints and suggestions in the config params are most welcome.
>
> Thank you,
> Krishane
>
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