database_dropped Database Dropped — SQLSTATE 57P04

The connected database was dropped.

• The error is written to the server log and returned to the client carrying SQLSTATE 57P04.
• Any driver (libpq, JDBC, psycopg, npgsql, pgx) surfaces this code in its error object so you can branch on it programmatically.
• PL/pgSQL can trap it by name: EXCEPTION WHEN database_dropped THEN.

Severity: ERROR  |  PostgreSQL versions: 12, 13, 14, 15, 16, 17

Commonly coincides with restarts, failover, maintenance, or network events; check server uptime and the log around the timestamp.

The database the session was using has been removed.

Steps to resolve 57P04:

1. Reconnect to a valid database.
2. Ensure clients are not pinned to a database that was dropped.

Reference: PostgreSQL error codes — Class 57 (Operator Intervention).