Individual skill
pg-lock-diagnosis
Diagnoses PostgreSQL lock contention including blocking lock chains, deadlock patterns, idle-in-transaction problems, and wait event analysis. Guides the agent through identifying blockers, understanding lock types, and recommending transaction and configuration changes.
skills/pg-lock-diagnosis/SKILL.md
Source commit 2eaa0cc8a10f8a256a31025c9f4e28582743da0e
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- Last checked
- Nov 5, 2026
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- Jun 2, 2026
- License
- Apache-2.0
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- ai Repository topic
- mcp-server Repository topic
- python Repository topic
- python3 Repository topic
- engineering Derived category
- data Derived category
- data-databases Derived category
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SKILL.mdcore · 11,571 bytes
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# PostgreSQL Lock Contention Diagnosis
This skill guides investigation and resolution of lock contention issues in PostgreSQL using pgtuner-mcp tools.
## When to Use This Skill
Use this skill when the user:
- Reports queries being blocked or timing out
- Sees "Lock" wait events in `pg_stat_activity`
- Experiences deadlocks (logged in PostgreSQL error log)
- Reports `idle in transaction` sessions causing problems
- Asks "why are my queries waiting?" or "what is blocking this query?"
- Sees application-level timeout errors due to lock waits