Vacuum “紧急模式”
已记录的来源状态与原始语言说明；缺少版本证据时明确标为未知。
来源快照记录 PostgreSQL 8.1–18 的变化节点；历史矩阵独立记录 7.4–18 的状态。两者均未记录 PostgreSQL 19 或 20 的支持状态，较新版本明确保留为未知。这些来源声明与运行测量相互独立。
VACUUM 与维护
说明
当 PostgreSQL 检测到事务 ID 回卷风险时，会更激进地执行 vacuum；该行为由 vacuum_failsafe_age 控制。
所选版本: PostgreSQL 18
支持
比较版本
原始文档链接
已记录旧标识: 360
完整来源事实与出处
yaml · center · 1dd22bf9a7f3ec325b894e2836fda535a25529f246a94dd41d6abbfe9997f7fd
{
"Key": "vacuum-emergency-mode",
"SourceKind": "yaml",
"SourceDatabase": "center",
"SourceTable": "featurematrix.yaml",
"SourceKey": "Vacuum \"emergency mode\"",
"SourceHash": "1dd22bf9a7f3ec325b894e2836fda535a25529f246a94dd41d6abbfe9997f7fd",
"Name": "Vacuum \"emergency mode\"",
"NameLocale": "en",
"GroupKey": "vacuum-and-maintenance",
"GroupName": "VACUUM and Maintenance",
"GroupLocale": "en",
"Ordinal": 6,
"GroupOrder": 16,
"Facts": {
"feature": {
"description": "PostgreSQL will vacuum aggressively when it detects the possibility of transaction ID wraparound. This is controlled with the [`vacuum_failsafe_age `](https://www.postgresql.org/docs/14/runtime-config-client.html#GUC-VACUUM-FAILSAFE-AGE) and [`vacuum_multixact_failsafe_age `](https://www.postgresql.org/docs/14/runtime-config-client.html#GUC-MULTIXACT-FAILSAFE-AGE) configuration parameters.",
"name": "Vacuum \"emergency mode\"",
"versions": {
"14": "Yes"
}
},
"group": "VACUUM and Maintenance",
"versions": {
"max": 18,
"min": 8.1
}
},
"Cells": [
{
"Version": "10",
"State": "no",
"EvidenceKind": "yaml-default-no",
"TransitionVersion": "",
"Supported": false,
"Original": "No"
},
{
"Version": "11",
"State": "no",
"EvidenceKind": "yaml-default-no",
"TransitionVersion": "",
"Supported": false,
"Original": "No"
},
{
"Version": "12",
"State": "no",
"EvidenceKind": "yaml-default-no",
"TransitionVersion": "",
"Supported": false,
"Original": "No"
},
{
"Version": "13",
"State": "no",
"EvidenceKind": "yaml-default-no",
"TransitionVersion": "",
"Supported": false,
"Original": "No"
},
{
"Version": "14",
"State": "yes",
"EvidenceKind": "yaml-transition",
"TransitionVersion": "14",
"Supported": true,
"Original": "Yes"
},
{
"Version": "15",
"State": "yes",
"EvidenceKind": "yaml-transition",
"TransitionVersion": "14",
"Supported": true,
"Original": "Yes"
},
{
"Version": "16",
"State": "yes",
"EvidenceKind": "yaml-transition",
"TransitionVersion": "14",
"Supported": true,
"Original": "Yes"
},
{
"Version": "17",
"State": "yes",
"EvidenceKind": "yaml-transition",
"TransitionVersion": "14",
"Supported": true,
"Original": "Yes"
},
{
"Version": "18",
"State": "yes",
"EvidenceKind": "yaml-transition",
"TransitionVersion": "14",
"Supported": true,
"Original": "Yes"
},
{
"Version": "8.1",
"State": "no",
"EvidenceKind": "yaml-default-no",
"TransitionVersion": "",
"Supported": false,
"Original": "No"
},
{
"Version": "8.2",
"State": "no",
"EvidenceKind": "yaml-default-no",
"TransitionVersion": "",
"Supported": false,
"Original": "No"
},
{
"Version": "8.3",
"State": "no",
"EvidenceKind": "yaml-default-no",
"TransitionVersion": "",
"Supported": false,
"Original": "No"
},
{
"Version": "8.4",
"State": "no",
"EvidenceKind": "yaml-default-no",
"TransitionVersion": "",
"Supported": false,
"Original": "No"
},
{
"Version": "9.0",
"State": "no",
"EvidenceKind": "yaml-default-no",
"TransitionVersion": "",
"Supported": false,
"Original": "No"
},
{
"Version": "9.1",
"State": "no",
"EvidenceKind": "yaml-default-no",
"TransitionVersion": "",
"Supported": false,
"Original": "No"
},
{
"Version": "9.2",
"State": "no",
"EvidenceKind": "yaml-default-no",
"TransitionVersion": "",
"Supported": false,
"Original": "No"
},
{
"Version": "9.3",
"State": "no",
"EvidenceKind": "yaml-default-no",
"TransitionVersion": "",
"Supported": false,
"Original": "No"
},
{
"Version": "9.4",
"State": "no",
"EvidenceKind": "yaml-default-no",
"TransitionVersion": "",
"Supported": false,
"Original": "No"
},
{
"Version": "9.5",
"State": "no",
"EvidenceKind": "yaml-default-no",
"TransitionVersion": "",
"Supported": false,
"Original": "No"
},
{
"Version": "9.6",
"State": "no",
"EvidenceKind": "yaml-default-no",
"TransitionVersion": "",
"Supported": false,
"Original": "No"
}
],
"Texts": [
{
"Locale": "en",
"Title": "Vacuum \"emergency mode\"",
"BodyHTML": "\u003cp\u003ePostgreSQL will vacuum aggressively when it detects the possibility of transaction ID wraparound. This is controlled with the \u003ca href=\"https://www.postgresql.org/docs/14/runtime-config-client.html#GUC-VACUUM-FAILSAFE-AGE\" rel=\"nofollow\"\u003e\u003ccode\u003evacuum_failsafe_age \u003c/code\u003e\u003c/a\u003e and \u003ca href=\"https://www.postgresql.org/docs/14/runtime-config-client.html#GUC-MULTIXACT-FAILSAFE-AGE\" rel=\"nofollow\"\u003e\u003ccode\u003evacuum_multixact_failsafe_age \u003c/code\u003e\u003c/a\u003e configuration parameters.\u003c/p\u003e\n",
"SourceHash": "1dd22bf9a7f3ec325b894e2836fda535a25529f246a94dd41d6abbfe9997f7fd",
"ContentHash": "edbaae8cdef785f62fcc4dd224f65634d7104566c000233bdd7a22118b170ba6",
"Payload": {
"description": "PostgreSQL will vacuum aggressively when it detects the possibility of transaction ID wraparound. This is controlled with the [`vacuum_failsafe_age `](https://www.postgresql.org/docs/14/runtime-config-client.html#GUC-VACUUM-FAILSAFE-AGE) and [`vacuum_multixact_failsafe_age `](https://www.postgresql.org/docs/14/runtime-config-client.html#GUC-MULTIXACT-FAILSAFE-AGE) configuration parameters.",
"name": "Vacuum \"emergency mode\"",
"versions": {
"14": "Yes"
}
}
},
{
"Locale": "zh-Hans",
"Title": "Vacuum “紧急模式”",
"BodyHTML": "\u003cp\u003e当 PostgreSQL 检测到事务 ID 回卷风险时，会更激进地执行 vacuum；该行为由 \u003ccode\u003evacuum_failsafe_age\u003c/code\u003e 控制。\u003c/p\u003e\n",
"SourceHash": "071091951021357a5f492adb04caed6febf4d315ac2626ca027a48dd8ec01d50",
"ContentHash": "611970aff395160b0ff3621d0ce3c61a9a8da5bbfe8867e9ad89d4cc95134064",
"Payload": {
"description": "当 PostgreSQL 检测到事务 ID 回卷风险时，会更激进地执行 vacuum；该行为由 `vacuum_failsafe_age` 控制。",
"name": "Vacuum “紧急模式”"
}
}
],
"GroupTitles": {
"en": "VACUUM and Maintenance",
"zh-Hans": "VACUUM 与维护"
},
"LegacyIDs": [
"360"
]
}