{"id":843,"date":"2023-09-12T19:18:47","date_gmt":"2023-09-12T11:18:47","guid":{"rendered":"https:\/\/www.furyblog.com\/?p=843"},"modified":"2023-09-12T19:21:08","modified_gmt":"2023-09-12T11:21:08","slug":"sql-server-always-on%e5%ae%9e%e7%8e%b0%e6%97%a5%e5%bf%97%e5%ae%9a%e6%97%b6%e5%a4%87%e4%bb%bd","status":"publish","type":"post","link":"https:\/\/www.furyblog.com\/?p=843","title":{"rendered":"SQL Server Always On\u5b9e\u73b0\u65e5\u5fd7\u5b9a\u65f6\u5907\u4efd"},"content":{"rendered":"\n<p>\u5728\u524d\u9762\u7684\u6587\u7ae0\u4e2d\u5df2\u7ecf\u4ecb\u7ecd\u4e86\u6211\u5df2\u7ecf\u5728\u672c\u5730\u670d\u52a1\u5668\u4e0a\u642d\u5efa\u4e86\u57fa\u4e8e\u5206\u79bb\u7684\u7fa4\u96c6\u5e76\u4e14\u642d\u5efa\u4e86SQL Server 2022 Always On\u7fa4\u96c6\u3002<br>\u5728\u4e00\u6b21\u65e5\u5e38\u5de1\u68c0\u4e2d\uff0c\u6211\u53d1\u73b0\u6570\u636e\u5e93\u7684\u65e5\u5fd7\u6587\u4ef6(.ldf)\u5f02\u5e38\u5927\uff0c\u751a\u81f3\u8fbe\u5230\u4e86200GB\uff0c\u8fd9\u663e\u7136\u662f\u4e0d\u6b63\u5e38\u7684\uff0c\u6211\u4eec\u5148\u6765\u770b\u770bSQL Server\u65e5\u5fd7\u6587\u4ef6\u627f\u62c5\u4ec0\u4e48\u4f5c\u7528\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u5355\u4e2a\u4e8b\u52a1\u6062\u590d\uff1a<\/strong>\u5982\u679c\u5e94\u7528\u7a0b\u5e8f\u53d1\u51fa\u4e86\u4e00\u4e2aROLLBACK\u8bed\u53e5\uff0c\u6216\u8005\u5982\u679c\u6570\u636e\u5e93\u5f15\u64ce\u68c0\u6d4b\u5230\u4e86\u9519\u8bef\uff08\u5982\u4e0e\u5ba2\u6237\u7aef\u7684\u901a\u4fe1\u4e22\u5931\uff09\uff0c\u5219\u4f7f\u7528\u65e5\u5fd7\u8bb0\u5f55\u6765\u56de\u6eda\u7531\u4e0d\u5b8c\u6574\u4e8b\u52a1\u6240\u505a\u7684\u4fee\u6539\u3002<\/li>\n\n\n\n<li><strong>\u5728SQL Server\u542f\u52a8\u65f6\u6062\u590d\u6240\u6709\u4e0d\u5b8c\u6574\u7684\u4e8b\u52a1\uff1a<\/strong>\u5982\u679c\u670d\u52a1\u5668\u5931\u8d25\uff0c\u53ef\u80fd\u4f1a\u5bfc\u81f4\u4e00\u4e9b\u4fee\u6539\u4ece\u7f13\u51b2\u533a\u7f13\u5b58\u4e2d\u672a\u5199\u5165\u6570\u636e\u6587\u4ef6\uff0c\u800c\u4e14\u6570\u636e\u6587\u4ef6\u4e2d\u53ef\u80fd\u5b58\u5728\u4e00\u4e9b\u4e0d\u5b8c\u6574\u4e8b\u52a1\u7684\u4fee\u6539\u3002\u5f53SQL Server\u5b9e\u4f8b\u542f\u52a8\u65f6\uff0c\u5b83\u4f1a\u5bf9\u6bcf\u4e2a\u6570\u636e\u5e93\u8fdb\u884c\u6062\u590d\u3002\u65e5\u5fd7\u4e2d\u8bb0\u5f55\u7684\u53ef\u80fd\u672a\u5199\u5165\u6570\u636e\u6587\u4ef6\u7684\u6bcf\u4e2a\u4fee\u6539\u90fd\u4f1a\u88ab\u524d\u6eda\u3002\u7136\u540e\uff0c\u4e8b\u52a1\u65e5\u5fd7\u4e2d\u627e\u5230\u7684\u6bcf\u4e2a\u4e0d\u5b8c\u6574\u4e8b\u52a1\u90fd\u4f1a\u88ab\u56de\u6eda\uff0c\u4ee5\u786e\u4fdd\u4fdd\u6301\u6570\u636e\u5e93\u7684\u5b8c\u6574\u6027\u3002<\/li>\n\n\n\n<li><strong>\u5c06\u6062\u590d\u7684\u6570\u636e\u5e93\u3001\u6587\u4ef6\u3001\u6587\u4ef6\u7ec4\u6216\u9875\u9762\u524d\u6eda\u5230\u6545\u969c\u70b9\uff1a<\/strong>\u5728\u786c\u4ef6\u635f\u5931\u6216\u5f71\u54cd\u6570\u636e\u5e93\u6587\u4ef6\u7684\u78c1\u76d8\u6545\u969c\u540e\uff0c\u4f60\u53ef\u4ee5\u5c06\u6570\u636e\u5e93\u6062\u590d\u5230\u6545\u969c\u70b9\u3002\u9996\u5148\u6062\u590d\u6700\u540e\u4e00\u6b21\u5b8c\u6574\u7684\u6570\u636e\u5e93\u5907\u4efd\u548c\u6700\u540e\u4e00\u6b21\u5dee\u5f02\u6570\u636e\u5e93\u5907\u4efd\uff0c\u7136\u540e\u6062\u590d\u540e\u7eed\u5e8f\u5217\u7684\u4e8b\u52a1\u65e5\u5fd7\u5907\u4efd\u5230\u6545\u969c\u70b9\u3002\u5728\u4f60\u6062\u590d\u6bcf\u4e2a\u65e5\u5fd7\u5907\u4efd\u65f6\uff0c\u6570\u636e\u5e93\u5f15\u64ce\u91cd\u65b0\u5e94\u7528\u65e5\u5fd7\u4e2d\u8bb0\u5f55\u7684\u6240\u6709\u4fee\u6539\uff0c\u4ee5\u524d\u6eda\u6240\u6709\u4e8b\u52a1\u3002\u5f53\u6700\u540e\u4e00\u4e2a\u65e5\u5fd7\u5907\u4efd\u88ab\u6062\u590d\u65f6\uff0c\u6570\u636e\u5e93\u5f15\u64ce\u7136\u540e\u4f7f\u7528\u65e5\u5fd7\u4fe1\u606f\u56de\u6eda\u6240\u6709\u5728\u90a3\u4e2a\u70b9\u4e0a\u672a\u5b8c\u6210\u7684\u4e8b\u52a1\u3002<\/li>\n\n\n\n<li><strong>\u652f\u6301\u4e8b\u52a1\u590d\u5236\uff1a<\/strong>\u65e5\u5fd7\u6587\u4ef6\u8fd8\u652f\u6301\u4e8b\u52a1\u590d\u5236\u3002<\/li>\n\n\n\n<li><strong>\u652f\u6301\u9ad8\u53ef\u7528\u6027\u548c\u707e\u96be\u6062\u590d\u89e3\u51b3\u65b9\u6848\uff1a<\/strong>\u5982Always On\u53ef\u7528\u6027\u7ec4\u3001\u6570\u636e\u5e93\u955c\u50cf\u548c\u65e5\u5fd7\u4f20\u9001\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u663e\u7136\uff0c\u5b83\u7684\u4f5c\u7528\u662f\u4e3a\u4e86\u63d0\u9ad8\u53ef\u7528\u6027\u7684\uff0c\u4f46\u662f\u5982\u679c\u8ba9\u5176\u65e0\u9650\u5236\u7684\u589e\u957f\u4e0b\u53bb\uff0c\u90a3\u4e48\u5f88\u5feb\u78c1\u76d8\u5c06\u4f1a\u7206\u6ee1\u4e14SQL Server\u4f1a\u51fa\u73b0\u65e0\u6cd5\u8fde\u63a5\u7684\u60c5\u51b5\uff0c\u800c\u5c06\u6570\u636e\u5e93\u65e5\u5fd7\u6587\u4ef6\u4e0a\u9650\u8fdb\u884c\u9650\u5236\u5219\u4f1a\u51fa\u73b0\u65e0\u6cd5\u9884\u6599\u7684\u95ee\u9898\u3002<\/p>\n\n\n\n<p>\u5728\u5355\u673a\u6a21\u5f0f\u4e0b\uff0c\u5c06\u6570\u636e\u5e93\u6062\u590d\u6a21\u5f0f\u8bbe\u7f6e\u4e3a\u7b80\u5355\u53ef\u4ee5\u7531SQL Server\u81ea\u884c\u7ba1\u7406\u65e5\u5fd7\u6587\u4ef6\uff0c\u800c\u5bf9\u4e8eAlways On\u53ef\u7528\u7ec4\u6570\u636e\u5e93\u5219\u5fc5\u987b\u5c06\u6062\u590d\u6a21\u5f0f\u8bbe\u7f6e\u4e3a\u5b8c\u6574\u624d\u53ef\u4ee5\u52a0\u5165Always On\u53ef\u7528\u6027\u6570\u636e\u5e93\u526f\u672c\uff0c\u90a3\u4e48\u4fbf\u9700\u8981\u6211\u4eec\u5b9a\u65f6\u7684\u5bf9\u65e5\u5fd7\u6570\u636e\u8fdb\u884c\u5907\u4efd\uff0c\u65e5\u5fd7\u5907\u4efd\u4f1a\u5bf9\u4e8b\u52a1\u8fdb\u884c\u622a\u65ad\uff0c\u7136\u540e\u53ef\u4ee5\u4f7f\u7528\u6536\u7f29\u6570\u636e\u5e93\u6587\u4ef6\u6765\u4f7f\u65e5\u5fd7\u6587\u4ef6\u6062\u590d\u521d\u59cb\u5927\u5c0f\u6216\u4e00\u4e2a\u6307\u5b9a\u503c\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u811a\u672c\u8fdb\u884c\u64cd\u4f5c\uff0c\u8be5\u811a\u672c\u7684\u4e3b\u8981\u529f\u80fd\u6709\uff1a<br><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5224\u65ad\u81ea\u8eab\u662f\u5426\u4e3aSQL Server\u8fd0\u884c\u7684\u4e3b\u526f\u672c\u8282\u70b9\uff0c\u5982\u679c\u4e0d\u662f\u4e3b\u526f\u672c\u8282\u70b9\u5219\u4e0d\u9700\u8981\u8fd0\u884c\u3002\u5047\u8bbe\u5728\u4e3b\u8282\u70b9\u51fa\u73b0\u6545\u969c\u7684\u60c5\u51b5\u4e0b\u6545\u969c\u89d2\u8272\u4e5f\u80fd\u8fc5\u901f\u7684\u8f6c\u79fb\u5230\u5176\u4ed6\u8282\u70b9\uff0c\u6570\u636e\u4e5f\u4e0d\u4f1a\u51fa\u73b0\u4e22\u5931\uff0c\u6240\u4ee5\u6211\u4eec\u4e00\u822c\u53ea\u9700\u8981\u5728\u4e3b\u8282\u70b9\u4e0a\u8fdb\u884c\u5907\u4efd\u548c\u65e5\u5fd7\u6536\u7f29\u3002<\/li>\n\n\n\n<li>\u8fde\u63a5\u672c\u5730\u6570\u636e\u5e93\u5e76\u67e5\u8be2\u52a0\u5165\u4e86Always On\u7684\u6570\u636e\u5e93\uff0c\u8bf7\u6ce8\u610f\uff0cSQL Server\u767b\u5f55\u5e94\u8be5\u8bbe\u7f6e\u4e3a\u6df7\u5408\u6a21\u5f0f\u3002<\/li>\n\n\n\n<li>\u8fd0\u884c\u65e5\u5fd7\u5907\u4efd\u52a8\u4f5c\u540e\u5e76\u8fdb\u884c\u65e5\u5fd7\u6587\u4ef6\u6536\u7f29\u3002<\/li>\n\n\n\n<li>\u68c0\u67e5\u5907\u4efd\u6587\u4ef6\u5939\u7684\u8fc7\u671f\u5907\u4efd\u6587\u4ef6\uff0c\u811a\u672c\u5185\u8bbe\u7f6e\u7684\u662f7\u5929\u3002<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code># \u5bfc\u5165\u6240\u9700\u7684\u6a21\u5757\nImport-Module FailoverClusters\nImport-Module SQLPS -DisableNameChecking\n\n# \u83b7\u53d6\u5f53\u524d\u8282\u70b9\u7684\u89d2\u8272\n$role = Get-ClusterGroup -Name \"YunLengDB-Cluster\" # \u6839\u636e\u5b9e\u9645\u89d2\u8272\u540d\u53d8\u66f4\n\n# \u68c0\u67e5\u5f53\u524d\u8282\u70b9\u662f\u5426\u662f\u89d2\u8272\u7684\u6240\u6709\u8005\nif ($role.OwnerNode.Name -eq &#91;System.Net.Dns]::GetHostName()) {\n    # \u5220\u96647\u5929\u4e4b\u524d\u7684\u5907\u4efd\u6587\u4ef6\n    $limit = (Get-Date).AddDays(-7)\n    Get-ChildItem \"D:\\Program Files\\Microsoft SQL Server\\MSSQL16.MSSQLSERVER\\MSSQL\\Backup\\\" -Recurse | Where-Object { !$_.PSIsContainer -and $_.CreationTime -lt $limit } | Remove-Item\n\n    # \u8fde\u63a5\u5230\u672c\u673a\u7684SQL Server\n    $server = New-Object Microsoft.SqlServer.Management.Smo.Server \"localhost\"\n\n    # \u68c0\u67e5\u8fde\u63a5\u662f\u5426\u6210\u529f\n    if ($server -eq $null) {\n        Write-Output \"\u8fde\u63a5\u5230SQL Server\u6570\u636e\u5e93\u5931\u8d25\u3002\"\n    } else {\n        Write-Output \"\u6210\u529f\u8fde\u63a5\u5230SQL Server\u6570\u636e\u5e93\u3002\"\n    }\n\n    # \u4f7f\u7528Invoke-Sqlcmd\u547d\u4ee4\u6267\u884cSQL\u67e5\u8be2\u6765\u83b7\u53d6\u6240\u6709\u5df2\u52a0\u5165Always On\u7684\u6570\u636e\u5e93\n    $query = @\"\nSELECT \n    DB_NAME(database_id) AS DatabaseName,\n    group_database_id,\n    is_local,\n    synchronization_state_desc\nFROM sys.dm_hadr_database_replica_states\nWHERE is_local = 1\n\"@\n    $databases = Invoke-Sqlcmd -Query $query -ServerInstance \"localhost\"\n\n    # \u6253\u5370\u6570\u636e\u5e93\u5217\u8868\n    Write-Output \"\u5df2\u52a0\u5165Always On\u7684\u6570\u636e\u5e93: $($databases.DatabaseName -join ', ')\"\n\n    # \u5bf9\u6240\u6709\u5df2\u52a0\u5165Always On\u7684\u6570\u636e\u5e93\u8fdb\u884c\u65e5\u5fd7\u5907\u4efd\u548c\u65e5\u5fd7\u6536\u7f29\n    foreach ($db in $databases.DatabaseName) {\n        try {\n            # \u6267\u884c\u65e5\u5fd7\u5907\u4efd\n            $backup = New-Object Microsoft.SqlServer.Management.Smo.Backup\n            $backup.Action = \"Log\"\n            $backup.Database = $db\n\n            # \u5728\u5907\u4efd\u6587\u4ef6\u540d\u4e2d\u5305\u542b\u6570\u636e\u5e93\u540d\u548c\u5f53\u524d\u65e5\u671f\n            $date = Get-Date -Format \"yyyy-MM-dd\"\n            $backup.Devices.AddDevice(\"D:\\Program Files\\Microsoft SQL Server\\MSSQL16.MSSQLSERVER\\MSSQL\\Backup\\$($db)_$($date)_Log.bak\", \"File\")\n\n            $backup.SqlBackup($server)\n            \n            Write-Output \"\u6210\u529f\u5907\u4efd\u6570\u636e\u5e93 '$($db)' \u7684\u65e5\u5fd7\u6587\u4ef6\u3002\"\n        } catch {\n            Write-Output \"\u5907\u4efd\u6570\u636e\u5e93 '$($db)' \u7684\u65e5\u5fd7\u6587\u4ef6\u65f6\u53d1\u751f\u9519\u8bef: $($_.Exception.Message)\"\n        }\n\n        try {\n            # \u6267\u884c\u65e5\u5fd7\u6536\u7f29\n            $server.Databases&#91;$db].LogFiles&#91;0].Shrink(0, \"TruncateOnly\")\n            Write-Output \"\u6210\u529f\u6536\u7f29\u6570\u636e\u5e93 '$($db)' \u7684\u65e5\u5fd7\u6587\u4ef6\u3002\"\n        } catch {\n            Write-Output \"\u6536\u7f29\u6570\u636e\u5e93 '$($db)' \u7684\u65e5\u5fd7\u6587\u4ef6\u65f6\u53d1\u751f\u9519\u8bef: $($_.Exception.Message)\"\n        }\n    }\n}\n<\/code><\/pre>\n\n\n\n<p>\u9700\u8981\u4fee\u6539\u7684\u5730\u65b9\u4e3b\u8981\u4e3a\u89d2\u8272\u540d\uff1a\u53ef\u4ee5\u901a\u8fc7Windows\u6545\u969c\u8f6c\u79fb\u7fa4\u96c6\u7ba1\u7406\u5668\u67e5\u770b\uff0c\u5907\u4efd\u76ee\u5f55\uff1a\u6839\u636e\u5b9e\u9645\u60c5\u51b5\u8fdb\u884c\u4fee\u6539\uff0c\u9700\u8981\u6ce8\u610f\u7684\u662f\u5728\u6bcf\u4e2a\u8282\u70b9\u5185\u90fd\u9700\u8981\u540c\u6837\u7684\u5907\u4efd\u76ee\u5f55\uff0c\u4f60\u4e5f\u53ef\u4ee5\u65b0\u5efa\u4e00\u4e2a\u6587\u4ef6\u5939\u4e13\u95e8\u5b58\u653e\uff0c\u90e8\u5206\u6253\u5370\u4fe1\u606f\u5728\u6d4b\u8bd5\u6210\u529f\u540e\u53ef\u4ee5\u53bb\u9664\u3002<\/p>\n\n\n\n<p>\u4f7f\u7528\u4efb\u52a1\u8ba1\u5212\u7ba1\u7406\u5668\u4e3a\u6bcf\u4e2a\u8282\u70b9\u90fd\u6dfb\u52a0\u8be5\u4efb\u52a1\uff0c\u5efa\u8bae\u5728\u6bcf\u5929\u768400:00\u8fd0\u884c\u3002\u5728\u8fd0\u884c\u540e\uff0c\u4e3b\u8282\u70b9\u7684\u65e5\u5fd7\u6587\u4ef6\u6536\u7f29\u6210\u529f\uff0c\u6587\u4ef6\u4e5f\u53d8\u5c0f\uff0c\u540c\u65f6\u5728\u6240\u6709\u8f85\u52a9\u8282\u70b9\u7684\u6587\u4ef6\u4e5f\u4f1a\u8fdb\u884c\u540c\u6b65\uff08\u6587\u4ef6\u4e5f\u53d8\u5c0f\uff09\u3002\u8fd9\u6837\u4fbf\u5b9e\u73b0\u4e86\u5728SQL 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