---
title: Runbook — LOCK_ACQUISITION_TIMEOUT (분산 락 획득 타임아웃)
category: CONFLICT
error_codes: [LOCK_ACQUISITION_TIMEOUT]
severity: P2
owner: oncall
last_updated: 2026-06-15
status: stub
---

# Runbook: LOCK_ACQUISITION_TIMEOUT (`runbook://lock/acquisition-timeout`)

## Symptoms

- HTTP 409 with `error.code=LOCK_ACQUISITION_TIMEOUT`
- Distributed lock wait exceeded configured timeout; high contention on a resource

## Diagnosis

- Check `lock.acquisition` metric for lock name and duration
- Identify lock holders (check DB `integration_lock` table)

## Action

- Client should retry with backoff (retryable=true)
- Optimize critical section holding time if lock contention is systemic

## Escalation

- Escalate if lock holder appears stuck (potential deadlock in distributed lock)

---

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