Hi. For almost 24h hours I'm asking Reailway team for a help but without success. Only I hear it's an application issue (I'm pretty sure it's not) but I cannot go forward.

I created few applications which have it's own databases (postgres).

On staging everything works ok.

I created new mirror environment (production) from stagging.

And all service which uses postgres worked once (migrations were created). But then stopped to connect to the database.

One interesting service is Temporal (so it's not my application bur ready docker image). After redeployment it has connections issues:

2026-03-18T18:26:58.347Z [31mERROR[0m sql handle: unable to refresh database connection pool {"error": "unable to connect to DB, tried default DB names: postgres,defaultdb, errors: [pq: password authentication failed for user \"postgres\" pq: password authentication failed for user \"postgres\"]", "logging-call-at": "/home/runner/work/docker-builds/docker-builds/temporal/common/persistence/sql/sqlplugin/db_handle.go:105"}

2026-03-18T18:27:00.083Z [31mERROR[0m Unable to create SQL database. {"error": "no usable database connection found", "logging-call-at": "/home/runner/work/docker-builds/docker-builds/temporal/tools/sql/handler.go:69"}

Env vars for service are set using Railway env vars (internal database connection).