{"Entry":{"collection":"metric","key":"pg_stat_wal-wal_fpi","name":"pg_stat_wal.wal_fpi","aliases":["wal_fpi","pg_stat_wal"],"metadata":{"aliases":["wal_fpi","pg_stat_wal"],"category":"pg_stat_wal","content_hash":"364e5bfafadc4b1bd526800e7e53febf9421243634cfab38794ab6641e94256e","imported_at":"2026-09-30T00:40:46.476117+08:00","name":"pg_stat_wal.wal_fpi","name_zh":"","slug":"pg_stat_wal-wal_fpi","summary":"Total number of WAL full page images generated"}},"Definition":{"Collection":"metric","Key":"pg_stat_wal-wal_fpi","SourceDatabase":"center","Version":"18","SourceTable":"statistics_metric","SourceKey":"pg_stat_wal-wal_fpi","SourceRevision":"555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f","Facts":{"comparison_data":{"field":"wal_fpi","sql_type":"bigint","units_mentioned":[],"view":"pg_stat_wal"},"comparison_hash":"d1cbbe1bb3ccbf2d8a40bd0660694b8b4c6901ed05a13c12c8fec044c49cdfac","description":["Total number of WAL full page images generated"],"documented":true,"facts":[{"label":"View","value":"pg_stat_wal"},{"label":"Field","value":"wal_fpi"},{"label":"SQL type","value":"bigint"},{"label":"Units named in the field definition","value":"Not specified"},{"label":"Reset observation","value":"Time at which these statistics were last reset"}],"field":"wal_fpi","manual_html":"","manual_path":"/docs/18/monitoring-stats.html","related":[{"label":"pg_stat_wal columns","url":"/wiki/catalog/pg_stat_wal/?v=18"},{"label":"Statistics collection and reset functions","url":"/docs/18/monitoring-stats.html"}],"release":{"channel":"stable","label":"18.6","major":"18","ref":"https://ftp.postgresql.org/pub/source/v18.6/postgresql-18.6.tar.bz2","revision":"555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f"},"sections":[{"paragraphs":["The pg_stat_wal view will always have a single row, containing data about WAL activity of the cluster."],"title":"View semantics"},{"paragraphs":["Read the same-version statistics collection and view documentation below for reset scope and visibility. No per-field reset rule is inferred from the field name."],"title":"Collection and reset context"},{"code":"SELECT wal_fpi FROM pg_catalog.pg_stat_wal;","paragraphs":["Example query; no execution result or measured value is asserted."],"title":"Inspect this field"}],"signature":"SELECT wal_fpi FROM pg_catalog.pg_stat_wal;","source_only":false,"sources":[{"label":"PostgreSQL 18 English manual","path":"monitoring-stats.html","sha256":"aa979eed08627fbf715a9d792094a162a73671db5af810f3ab2aad3e073d5722","url":"/docs/18/monitoring-stats.html#PG-STAT-WAL-VIEW"}],"sql_type":"bigint","tables":[],"units_mentioned":[],"view":"pg_stat_wal"},"ManualEvidence":{"manual_path":"/docs/18/monitoring-stats.html","release":{"channel":"stable","label":"18.6","major":"18","ref":"https://ftp.postgresql.org/pub/source/v18.6/postgresql-18.6.tar.bz2","revision":"555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f"},"sources":[{"label":"PostgreSQL 18 English manual","path":"monitoring-stats.html","sha256":"aa979eed08627fbf715a9d792094a162a73671db5af810f3ab2aad3e073d5722","url":"/docs/18/monitoring-stats.html#PG-STAT-WAL-VIEW"}]},"MeasuredEvidence":{}},"Text":{"Collection":"metric","Key":"pg_stat_wal-wal_fpi","SourceDatabase":"center","Version":"18","Locale":"en","Title":"pg_stat_wal.wal_fpi","Summary":"Total number of WAL full page images generated","BodyHTML":"\u003cp\u003eTotal number of WAL full page images generated\u003c/p\u003e","SourceRevision":"555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f","ContentHash":"0daad735be33d05b225b625bdce11a1a2a0de7dfbbbedd8be6a635538afffc35","Payload":{"description":["Total number of WAL full page images generated"],"manual_html":"","related":[{"label":"pg_stat_wal columns","url":"/wiki/catalog/pg_stat_wal/?v=18"},{"label":"Statistics collection and reset functions","url":"/docs/18/monitoring-stats.html"}],"sections":[{"paragraphs":["The pg_stat_wal view will always have a single row, containing data about WAL activity of the cluster."],"title":"View semantics"},{"paragraphs":["Read the same-version statistics collection and view documentation below for reset scope and visibility. No per-field reset rule is inferred from the field name."],"title":"Collection and reset context"},{"code":"SELECT wal_fpi FROM pg_catalog.pg_stat_wal;","paragraphs":["Example query; no execution result or measured value is asserted."],"title":"Inspect this field"}],"tables":[]}},"RequestedLocale":"zh-Hans","Fallback":true,"Versions":["14","15","16","17","18","19","20"],"Locales":["en"],"Signatures":null,"Spellings":null,"SQLState":null,"Evidence":null}