PostgreSQL Transaction ID Wraparound Risk Check
Shows XID age per database and how close it is to the wraparound limit. A reliable alert source to catch a critical outage early.
SELECT datname,
age(datfrozenxid) AS xid_age,
round(100.0 * age(datfrozenxid) / 2147483647, 2) AS pct_to_wraparound
FROM pg_database
ORDER BY xid_age DESC;Aggressive vacuum triggers as transaction age approaches `autovacuum_freeze_max_age` (default 200M). Alert when utilization exceeds 50%.
- This script is designed for read-only diagnostics; it does not alter schema or modify data directly.
- Prior to executing on production systems under high load, verify the target database version (Min. Version: 9.x).
- Exercise caution with mutating actions (e.g., terminating sessions or dropping indexes) referenced in the notes section.
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Lists queries running longer than a minute, their wait events, and idle-in-transaction sessions that block vacuum. The first script to run during a performance incident.
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PostgreSQL Dead Tuples, Bloat and Autovacuum Health Check
Shows dead tuple ratio and last vacuum/analyze times per table. Helps you find tables where autovacuum settings are not keeping up.
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