{"Entry":{"collection":"metric","key":"pg_stat_replication-backend_start","name":"pg_stat_replication.backend_start","aliases":["backend_start","pg_stat_replication"],"metadata":{"aliases":["backend_start","pg_stat_replication"],"category":"pg_stat_replication","content_hash":"1e40f9576a3b5d7682067aa60ba394c13de944ecd25c1ff18f2b87113b2c58e7","derived_content_hash":"d6e0fd02cb1b770cca8cf8287f075dad3addfd22a999a64f87a17084ad223568","imported_at":"2026-09-30T00:40:46.060528+08:00","name":"pg_stat_replication.backend_start","name_zh":"","slug":"pg_stat_replication-backend_start","summary":"Time when this process was started, i.e., when the client connected to this WAL sender"}},"Definition":{"Collection":"metric","Key":"pg_stat_replication-backend_start","SourceDatabase":"center","Version":"18","SourceTable":"statistics_metric","SourceKey":"pg_stat_replication-backend_start","SourceRevision":"555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f","Facts":{"comparison_data":{"field":"backend_start","sql_type":"timestamp with time zone","units_mentioned":[],"view":"pg_stat_replication"},"comparison_hash":"576b062f8c9b6ff17371443ab93d059d99016b34456aa3ff05d4b3a990c09685","description":["Time when this process was started, i.e., when the client connected to this WAL sender"],"description_zh":"这个进程开始的时间，即客户端是何时连接到这个 WAL 发送进程的。","description_zh_html":"\u003cp\u003epg_stat_replication.backend_start 统计字段。\u003c/p\u003e\u003cdl\u003e\u003cdt\u003e视图\u003c/dt\u003e\u003cdd\u003e\u003ccode\u003epg_stat_replication\u003c/code\u003e\u003c/dd\u003e\u003cdt\u003e字段\u003c/dt\u003e\u003cdd\u003e\u003ccode\u003ebackend_start\u003c/code\u003e\u003c/dd\u003e\u003cdt\u003eSQL 类型\u003c/dt\u003e\u003cdd\u003e\u003ccode\u003etimestamp with time zone\u003c/code\u003e\u003c/dd\u003e\u003c/dl\u003e\u003ch3\u003e同版本中文手册定义\u003c/h3\u003e\u003cp\u003e这个进程开始的时间，即客户端是何时连接到这个 WAL 发送进程的。\u003c/p\u003e\u003cp\u003e\u003ca href=\"/zh/docs/18/monitoring-stats.html#\"\u003e查看完整中文手册与上下文\u003c/a\u003e。\u003c/p\u003e","documented":true,"facts":[{"label":"View","value":"pg_stat_replication"},{"label":"Field","value":"backend_start"},{"label":"SQL type","value":"timestamp with time zone"},{"label":"Units named in the field definition","value":"Not specified"},{"label":"Reset observation","value":"No stats_reset field is documented for this view"}],"facts_zh":[{"label":"视图","value":"pg_stat_replication"},{"label":"字段","value":"backend_start"},{"label":"SQL 类型","value":"timestamp with time zone"},{"label":"字段定义记载的单位","value":"未指定"},{"label":"重置条件","value":"手册未为此视图记载 stats_reset 字段"}],"field":"backend_start","manual_html":"","manual_path":"/docs/18/monitoring-stats.html","related":[{"label":"pg_stat_replication columns","url":"/wiki/catalog/pg_stat_replication/?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_replication view will contain one row per WAL sender process, showing statistics about replication to that sender's connected standby server. Only directly connected standbys are listed; no information is available about downstream standby servers."],"title":"View semantics"},{"paragraphs":["Read the same-version statistics collection and view documentation below for reset scope and visibility. 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