tech-log-backend/docs/runbooks/db-idle-in-tx-timeout.md

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

title	category	error_codes	severity	owner	last_updated	status
Runbook — DB_IDLE_IN_TX_TIMEOUT (트랜잭션 idle 타임아웃)	TRANSIENT_DEPENDENCY	DB_IDLE_IN_TX_TIMEOUT	P2	oncall	2026-06-15	stub

Runbook: DB_IDLE_IN_TX_TIMEOUT (runbook://db/idle-in-tx-timeout)

Symptoms

• HTTP 503 with error.code=DB_IDLE_IN_TX_TIMEOUT
• SQLState 25P03; transaction held open too long without activity

Diagnosis

• Check idle_in_transaction_session_timeout Postgres setting
• Look for application-level long-running transaction holders

Action

• Reduce transaction scope in application code
• Verify spring.jpa.properties.hibernate.connection.timeout is bounded

Escalation

• Escalate to DBA if connection pool exhaustion results

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