---
title: Runbook — DB_QUERY_CANCELED (쿼리 취소)
category: TRANSIENT_DEPENDENCY
error_codes: [DB_QUERY_CANCELED]
severity: P2
owner: oncall
last_updated: 2026-06-15
status: stub
---

# Runbook: DB_QUERY_CANCELED (`runbook://db/query-canceled`)

## Symptoms

- HTTP 503 with `error.code=DB_QUERY_CANCELED`
- SQLState 57014; query exceeds statement timeout

## Diagnosis

- Check `statement_timeout` in Postgres
- Identify slow queries in `pg_stat_statements`

## Action

- Optimize slow query or add index
- Adjust statement timeout if query is legitimately long

## Escalation

- Escalate to DBA for query optimization if recurring

---

> **Stub**: Phase D2 — author body after domain adoption. (feature-operational-runbook-contract D9)