35 lines
705 B
Markdown
35 lines
705 B
Markdown
---
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title: Runbook — DB_DEADLOCK (데드락)
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category: CONFLICT
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error_codes: [DB_DEADLOCK]
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severity: P2
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owner: oncall
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last_updated: 2026-06-15
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status: stub
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---
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# Runbook: DB_DEADLOCK (`runbook://db/deadlock`)
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## Symptoms
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- HTTP 409 with `error.code=DB_DEADLOCK`
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- SQLState 40P01 in Postgres logs
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## Diagnosis
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- Check `pg_locks` and `pg_stat_activity` during deadlock
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- Identify conflicting transaction lock order
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## Action
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- Client should retry (retryable=true)
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- Fix lock ordering in code if recurring
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## Escalation
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- Escalate to DBA if deadlock rate is sustained > 1% of transactions
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---
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> **Stub**: Phase D2 — author body after domain adoption. (feature-operational-runbook-contract D9)
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