tech-log-backend/docs/runbooks/db-query-canceled.md

title, category, error_codes, severity, owner, last_updated, status

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

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