{"id":5906,"date":"2026-06-16T16:15:28","date_gmt":"2026-06-16T16:15:28","guid":{"rendered":"https:\/\/cloudsave.app\/knowledge-base\/mssql-transaction-log-full-recovery\/"},"modified":"2026-06-16T16:53:22","modified_gmt":"2026-06-16T16:53:22","slug":"mssql%e3%83%88%e3%83%a9%e3%83%b3%e3%82%b6%e3%82%af%e3%82%b7%e3%83%a7%e3%83%b3%e3%83%ad%e3%82%b0%e3%81%ae%e8%82%a5%e5%a4%a7%e5%8c%96-%e4%ba%88%e9%98%b2%e3%81%a8%e8%bf%85%e9%80%9f%e3%81%aa%e5%be%a9","status":"publish","type":"post","link":"https:\/\/cloudsave.app\/ja\/knowledge-base\/mssql%e3%83%88%e3%83%a9%e3%83%b3%e3%82%b6%e3%82%af%e3%82%b7%e3%83%a7%e3%83%b3%e3%83%ad%e3%82%b0%e3%81%ae%e8%82%a5%e5%a4%a7%e5%8c%96-%e4%ba%88%e9%98%b2%e3%81%a8%e8%bf%85%e9%80%9f%e3%81%aa%e5%be%a9\/","title":{"rendered":"MSSQL\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u30ed\u30b0\u306e\u80a5\u5927\u5316\uff1a\u4e88\u9632\u3068\u8fc5\u901f\u306a\u5fa9\u65e7\u6226\u7565"},"content":{"rendered":"<p>Microsoft SQL Server\u3092\u7ba1\u7406\u3059\u308b\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u7ba1\u7406\u8005\uff08DBA\uff09\u3084DevOps\u30a8\u30f3\u30b8\u30cb\u30a2\u306b\u3068\u3063\u3066\u3001\u30a8\u30e9\u30fc9002\u300c<em>\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9 &#8216;X&#8217; \u306e\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3 \u30ed\u30b0\u304c\u3044\u3063\u3071\u3044\u3067\u3059<\/em>\u300d\u307b\u3069\u3001\u5373\u5ea7\u306b\u4e0d\u5b89\u3092\u304b\u304d\u7acb\u3066\u308b\u30a2\u30e9\u30fc\u30c8\u306f\u307b\u3068\u3093\u3069\u3042\u308a\u307e\u305b\u3093\u3002\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3 \u30ed\u30b0\u304c\u4e00\u676f\u306b\u306a\u308a\u3001\u62e1\u5f35\u3067\u304d\u306a\u304f\u306a\u308b\u3068\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306f\u5b9f\u8cea\u7684\u306b\u8aad\u307f\u53d6\u308a\u5c02\u7528\u3068\u306a\u308a\u307e\u3059\u3002\u3059\u3079\u3066\u306e <code>INSERT<\/code>\u3001<code>UPDATE<\/code>\u3001<code>DELETE<\/code> \u64cd\u4f5c\u304c\u505c\u6b62\u3057\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u306f\u5931\u6557\u3057\u3001\u672c\u756a\u74b0\u5883\u306f\u5b8c\u5168\u306b\u505c\u6b62\u3057\u3066\u3057\u307e\u3044\u307e\u3059\u3002<\/p>\n<p>SQL Server\u306e\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3 \u30ed\u30b0\u306e\u57fa\u790e\u3068\u306a\u308b\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u3092\u7406\u89e3\u3057\u3001\u6839\u672c\u539f\u56e0\u3092\u6b63\u78ba\u306b\u8a3a\u65ad\u3057\u3001\u8fc5\u901f\u306a\u5fa9\u65e7\u624b\u9806\u3092\u5b9f\u884c\u3059\u308b\u3053\u3068\u306f\u3001\u9ad8\u53ef\u7528\u6027\u3092\u7dad\u6301\u3059\u308b\u305f\u3081\u306b\u4e0d\u53ef\u6b20\u306a\u30b9\u30ad\u30eb\u3067\u3059\u3002\u672c\u30ac\u30a4\u30c9\u3067\u306f\u3001\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3 \u30ed\u30b0\u306e\u30e1\u30ab\u30cb\u30ba\u30e0\u3001\u7dca\u6025\u6642\u306b\u30ed\u30b0\u304c\u3044\u3063\u3071\u3044\u306b\u306a\u3063\u305f\u5834\u5408\u306e\u89e3\u6c7a\u65b9\u6cd5\u3001\u304a\u3088\u3073\u518d\u767a\u3092\u9632\u3050\u305f\u3081\u306e\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u4e0a\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n<h2>SQL Server\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3 \u30ed\u30b0\u306e\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u3092\u7406\u89e3\u3059\u308b<\/h2>\n<p>\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3 \u30ed\u30b0\u304c\u3044\u3063\u3071\u3044\u306b\u306a\u3063\u305f\u554f\u984c\u3092\u52b9\u679c\u7684\u306b\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u3059\u308b\u306b\u306f\u3001\u307e\u305aSQL Server\u304c\u3069\u306e\u3088\u3046\u306b\u30c7\u30fc\u30bf\u3092\u66f8\u304d\u8fbc\u307f\u3001\u7ba1\u7406\u3057\u3066\u3044\u308b\u304b\u3092\u7406\u89e3\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<h3>\u5148\u884c\u66f8\u304d\u8fbc\u307f\u30ed\u30b0\uff08WAL: Write-Ahead Logging\uff09<\/h3>\n<p>SQL Server\u306f\u5148\u884c\u66f8\u304d\u8fbc\u307f\u30ed\u30b0\uff08WAL\uff09\u30d7\u30ed\u30c8\u30b3\u30eb\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002\u30c7\u30fc\u30bf\u304c\u5909\u66f4\u3055\u308c\u308b\u305f\u3073\u306b\u3001\u305d\u306e\u5909\u66f4\u306f\u307e\u305a\u30e1\u30e2\u30ea\u5185\u306e\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3 \u30ed\u30b0\u306b\u66f8\u304d\u8fbc\u307e\u308c\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9 \u30d5\u30a1\u30a4\u30eb\uff08MDF\/NDF\uff09\u5185\u306e\u5b9f\u969b\u306e\u30c7\u30fc\u30bf \u30da\u30fc\u30b8\u304c\u66f4\u65b0\u3055\u308c\u308b\u524d\u306b\u3001\u30c7\u30a3\u30b9\u30af\u4e0a\u306e\u7269\u7406\u30ed\u30b0 \u30d5\u30a1\u30a4\u30eb\u306b\u30d5\u30e9\u30c3\u30b7\u30e5\u3055\u308c\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308aACID\uff08\u539f\u5b50\u6027\u3001\u4e00\u8cab\u6027\u3001\u5206\u96e2\u6027\u3001\u6c38\u7d9a\u6027\uff09\u306e\u6e96\u62e0\u304c\u4fdd\u8a3c\u3055\u308c\u3001\u30af\u30e9\u30c3\u30b7\u30e5\u304c\u767a\u751f\u3057\u305f\u5834\u5408\u3067\u3082\u3001SQL Server\u306f\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u3092\u518d\u5b9f\u884c\uff08\u30ed\u30fc\u30eb\u30d5\u30a9\u30ef\u30fc\u30c9\uff09\u307e\u305f\u306f\u53d6\u308a\u6d88\u3057\uff08\u30ed\u30fc\u30eb\u30d0\u30c3\u30af\uff09\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<h3>\u4eee\u60f3\u30ed\u30b0 \u30d5\u30a1\u30a4\u30eb\uff08VLF\uff09\u3068\u5faa\u74b0\u30ed\u30b0<\/h3>\n<p>\u5185\u90e8\u7684\u306b\u306f\u3001\u7269\u7406\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3 \u30ed\u30b0 \u30d5\u30a1\u30a4\u30eb\uff08LDF\uff09\u306f\u3001\u4eee\u60f3\u30ed\u30b0 \u30d5\u30a1\u30a4\u30eb\uff08VLF\uff09\u3068\u547c\u3070\u308c\u308b\u5c0f\u3055\u306a\u8ad6\u7406\u30bb\u30b0\u30e1\u30f3\u30c8\u306b\u5206\u5272\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3 \u30ed\u30b0\u306f\u5faa\u74b0\u7684\u306b\u52d5\u4f5c\u3057\u307e\u3059\u3002\u30ed\u30b0 \u30ec\u30b3\u30fc\u30c9\u304c\u66f8\u304d\u8fbc\u307e\u308c\u308b\u3068\u30011\u3064\u306eVLF\u304c\u3044\u3063\u3071\u3044\u306b\u306a\u308a\u3001\u6b21\u306eVLF\u3078\u3068\u79fb\u52d5\u3057\u307e\u3059\u3002<\/p>\n<p>\u30ed\u30b0\u304c\u7269\u7406\u30d5\u30a1\u30a4\u30eb\u306e\u7d42\u7aef\u306b\u9054\u3059\u308b\u3068\u3001\u5148\u982d\u306b\u623b\u308d\u3046\u3068\u3057\u307e\u3059\u3002\u305f\u3060\u3057\u3001VLF\u3092\u4e0a\u66f8\u304d\u3067\u304d\u308b\u306e\u306f\u3001\u305d\u306eVLF\u304c<strong>\u975e\u30a2\u30af\u30c6\u30a3\u30d6<\/strong>\u3068\u30de\u30fc\u30af\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u306e\u307f\u3067\u3059\u3002\u3059\u3079\u3066\u306eVLF\u304c\u30a2\u30af\u30c6\u30a3\u30d6\uff08SQL Server\u304c\u307e\u3060\u5fc5\u8981\u3068\u3057\u3066\u3044\u308b\u30ed\u30b0 \u30ec\u30b3\u30fc\u30c9\u304c\u542b\u307e\u308c\u3066\u3044\u308b\u72b6\u614b\uff09\u3067\u3042\u308b\u5834\u5408\u3001\u30ed\u30b0\u306f\u5148\u982d\u306b\u623b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u305b\u3093\u3002\u81ea\u52d5\u62e1\u5f35\u304c\u6709\u52b9\u3067\u30c7\u30a3\u30b9\u30af\u5bb9\u91cf\u306b\u7a7a\u304d\u304c\u3042\u308b\u5834\u5408\u306f\u3001\u7269\u7406\u30d5\u30a1\u30a4\u30eb\u304c\u62e1\u5f35\u3055\u308c\u307e\u3059\u3002\u30c7\u30a3\u30b9\u30af\u304c\u3044\u3063\u3071\u3044\u3067\u3042\u308b\u304b\u3001\u81ea\u52d5\u62e1\u5f35\u304c\u5236\u9650\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u306f\u3001\u30a8\u30e9\u30fc9002\u304c\u767a\u751f\u3057\u307e\u3059\u3002<\/p>\n<h3>\u30ed\u30b0\u306e\u5207\u308a\u6368\u3066\uff08Truncation\uff09\u3068\u30ed\u30b0\u306e\u7e2e\u5c0f\uff08Shrinking\uff09<\/h3>\n<p>\u30ed\u30b0\u3092\u5207\u308a\u6368\u3066\u308c\u3070\u7269\u7406\u30d5\u30a1\u30a4\u30eb\u30b5\u30a4\u30ba\u304c\u5c0f\u3055\u304f\u306a\u308b\u3068\u8aa4\u89e3\u3055\u308c\u304c\u3061\u3067\u3059\u304c\u3001\u305d\u3046\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<br \/>\n*   <strong>\u30ed\u30b0\u306e\u5207\u308a\u6368\u3066\uff08Log Truncation\uff09:<\/strong> \u30a2\u30af\u30c6\u30a3\u30d6\u306aVLF\u3092\u975e\u30a2\u30af\u30c6\u30a3\u30d6\u3068\u3057\u3066\u30de\u30fc\u30af\u3057\u3001\u518d\u5229\u7528\u53ef\u80fd\u306a\u72b6\u614b\u306b\u3059\u308b\u30d7\u30ed\u30bb\u30b9\u3067\u3059\u3002\u30c7\u30a3\u30b9\u30af\u4e0a\u306eLDF\u30d5\u30a1\u30a4\u30eb\u306e\u30b5\u30a4\u30ba\u306f<em>\u7e2e\u5c0f\u3055\u308c\u307e\u305b\u3093<\/em>\u3002<br \/>\n*   <strong>\u30ed\u30b0\u306e\u7e2e\u5c0f\uff08Log Shrinking\uff09:<\/strong> LDF\u30d5\u30a1\u30a4\u30eb\u306e\u30b5\u30a4\u30ba\u3092\u7269\u7406\u7684\u306b\u7e2e\u5c0f\u3057\u3001\u30aa\u30da\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0 \u30b7\u30b9\u30c6\u30e0\u306b\u9818\u57df\u3092\u8fd4\u5374\u3059\u308b\u30d7\u30ed\u30bb\u30b9\u3067\u3059\u3002<\/p>\n<p>\u5b8c\u5168\u5fa9\u65e7\u30e2\u30c7\u30eb\u3067\u306f\u3001\u30ed\u30b0\u306e\u5207\u308a\u6368\u3066\u306f\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3 \u30ed\u30b0\u306e\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u304c\u6b63\u5e38\u306b\u5b8c\u4e86\u3057\u305f\u3068\u304d\u306b<em>\u306e\u307f<\/em>\u767a\u751f\u3057\u307e\u3059\uff08\u4ed6\u306e\u30d7\u30ed\u30bb\u30b9\u304c\u30ed\u30b0\u3092\u30a2\u30af\u30c6\u30a3\u30d6\u306b\u4fdd\u6301\u3057\u3066\u3044\u306a\u3044\u3053\u3068\u304c\u524d\u63d0\u3067\u3059\uff09\u3002<\/p>\n<h2>\u300c\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3 \u30ed\u30b0\u304c\u3044\u3063\u3071\u3044\u3067\u3059\u300d\u30a8\u30e9\u30fc\uff08\u30a8\u30e9\u30fc9002\uff09\u306e\u8a3a\u65ad<\/h2>\n<p>\u30ed\u30b0\u304c\u3044\u3063\u3071\u3044\u306b\u306a\u3063\u305f\u3068\u304d\u3001\u6700\u521d\u306b\u884c\u3046\u3079\u304d\u3053\u3068\u306f\u3001\u76f2\u76ee\u7684\u306b\u30c7\u30a3\u30b9\u30af\u5bb9\u91cf\u3092\u8ffd\u52a0\u3057\u305f\u308a\u30d5\u30a1\u30a4\u30eb\u3092\u7e2e\u5c0f\u3057\u305f\u308a\u3059\u308b\u3053\u3068\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u30ed\u30b0\u304c\u5207\u308a\u6368\u3066\u3089\u308c\u306a\u3044<em>\u7406\u7531<\/em>\u3092\u7279\u5b9a\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002SQL Server\u306b\u306f\u3001<code>sys.databases<\/code> \u30ab\u30bf\u30ed\u30b0 \u30d3\u30e5\u30fc\u3092\u901a\u3058\u3066\u3001\u30ed\u30b0\u306e\u518d\u5229\u7528\u3092\u59a8\u3052\u3066\u3044\u308b\u539f\u56e0\u3092\u6b63\u78ba\u306b\u7279\u5b9a\u3059\u308b\u7d44\u307f\u8fbc\u307f\u30e1\u30ab\u30cb\u30ba\u30e0\u304c\u7528\u610f\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u30dc\u30c8\u30eb\u30cd\u30c3\u30af\u3092\u7279\u5b9a\u3059\u308b\u306b\u306f\u3001\u4ee5\u4e0b\u306eT-SQL\u30b3\u30de\u30f3\u30c9\u3092\u5b9f\u884c\u3057\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-sql\">SELECT \n    name AS DatabaseName, \n    recovery_model_desc AS RecoveryModel, \n    log_reuse_wait_desc AS LogReuseWaitReason\nFROM sys.databases\nWHERE name = 'YourDatabaseName';\n<\/code><\/pre>\n<p>\u307e\u305f\u3001\u4ee5\u4e0b\u306e\u30b3\u30de\u30f3\u30c9\u3067\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3 \u30ed\u30b0\u306e\u73fe\u5728\u306e\u4f7f\u7528\u72b6\u6cc1\u3092\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-sql\">DBCC SQLPERF(LOGSPACE);\n<\/code><\/pre>\n<h3>\u4e00\u822c\u7684\u306a <code>log_reuse_wait_desc<\/code> \u306e\u72b6\u614b<\/h3>\n<ol>\n<li><strong>LOG_BACKUP:<\/strong> \u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u304c\u5b8c\u5168\u5fa9\u65e7\u30e2\u30c7\u30eb\u307e\u305f\u306f\u4e00\u62ec\u30ed\u30b0\u5fa9\u65e7\u30e2\u30c7\u30eb\u3067\u3042\u308a\u3001\u6700\u8fd1\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3 \u30ed\u30b0\u306e\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u304c\u53d6\u5f97\u3055\u308c\u3066\u3044\u307e\u305b\u3093\u3002\u3053\u308c\u304c\u6700\u3082\u4e00\u822c\u7684\u306a\u539f\u56e0\u3067\u3059\u3002<\/li>\n<li><strong>ACTIVE_TRANSACTION:<\/strong> \u9577\u6642\u9593\u5b9f\u884c\u3055\u308c\u3066\u3044\u308b\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\uff08\u5927\u898f\u6a21\u306a\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u518d\u69cb\u7bc9\u3084\u3001\u30b3\u30df\u30c3\u30c8\u3055\u308c\u3066\u3044\u306a\u3044\u5fd8\u308c\u3089\u308c\u305f\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u306a\u3069\uff09\u304c\u30ed\u30b0\u3092\u30a2\u30af\u30c6\u30a3\u30d6\u306b\u4fdd\u6301\u3057\u3066\u3044\u307e\u3059\u3002<\/li>\n<li><strong>REPLICATION \/ CDC:<\/strong> \u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3 \u30ec\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u307e\u305f\u306f\u5909\u66f4\u30c7\u30fc\u30bf \u30ad\u30e3\u30d7\u30c1\u30e3\uff08CDC\uff09\u304c\u6709\u52b9\u306b\u306a\u3063\u3066\u304a\u308a\u3001\u30ed\u30b0 \u30ea\u30fc\u30c0\u30fc \u30a8\u30fc\u30b8\u30a7\u30f3\u30c8\u304c\u307e\u3060\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u3092\u51e6\u7406\u3057\u3066\u3044\u307e\u305b\u3093\u3002<\/li>\n<li><strong>AVAILABILITY_REPLICA:<\/strong> AlwaysOn\u53ef\u7528\u6027\u30b0\u30eb\u30fc\u30d7\u306b\u304a\u3044\u3066\u3001\u30bb\u30ab\u30f3\u30c0\u30ea \u30ec\u30d7\u30ea\u30ab\u304c\u5207\u65ad\u3055\u308c\u3066\u3044\u308b\u304b\u540c\u671f\u304c\u9045\u3059\u304e\u308b\u305f\u3081\u3001\u30d7\u30e9\u30a4\u30de\u30ea \u30ec\u30d7\u30ea\u30ab\u304c\u30bb\u30ab\u30f3\u30c0\u30ea\u3067\u30ed\u30b0 \u30ec\u30b3\u30fc\u30c9\u304c\u53cd\u6620\u3055\u308c\u308b\u307e\u3067\u4fdd\u6301\u305b\u3056\u308b\u3092\u5f97\u306a\u3044\u72b6\u614b\u3067\u3059\u3002<\/li>\n<\/ol>\n<h2>\u8fc5\u901f\u306a\u5fa9\u65e7\u6226\u7565\uff1a\u672c\u756a\u74b0\u5883\u3067\u306e\u554f\u984c\u89e3\u6c7a<\/h2>\n<p>\u8fd4\u3055\u308c\u305f <code>log_reuse_wait_desc<\/code> \u306b\u5fdc\u3058\u3066\u3001\u7dca\u6025\u5bfe\u5fdc\u306f\u7570\u306a\u308a\u307e\u3059\u3002\u6700\u3082\u4e00\u822c\u7684\u306a\u30b7\u30ca\u30ea\u30aa\u306b\u5bfe\u3059\u308b\u8fc5\u901f\u306a\u5fa9\u65e7\u6226\u7565\u3092\u4ee5\u4e0b\u306b\u793a\u3057\u307e\u3059\u3002<\/p>\n<h3>\u30b7\u30ca\u30ea\u30aa1\uff1a\u30ed\u30b0 \u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u306e\u6b20\u843d\u307e\u305f\u306f\u5931\u6557\uff08<code>LOG_BACKUP<\/code>\uff09<\/h3>\n<p>\u5f85\u6a5f\u30bf\u30a4\u30d7\u304c <code>LOG_BACKUP<\/code> \u306e\u5834\u5408\u3001\u89e3\u6c7a\u7b56\u306f\u5358\u7d14\u3067\u3059\u3002\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3 \u30ed\u30b0\u3092\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-sql\">BACKUP LOG [YourDatabaseName] \nTO DISK = 'N:BackupsYourDatabaseName_EmergencyLog.trn' \nWITH COMPRESSION, STATS = 10;\n<\/code><\/pre>\n<p>\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u304c\u5b8c\u4e86\u3059\u308b\u3068\u3001\u975e\u30a2\u30af\u30c6\u30a3\u30d6\u306aVLF\u304c\u5207\u308a\u6368\u3066\u3089\u308c\u3001SQL Server\u306f\u901a\u5e38\u306e\u52d5\u4f5c\u3092\u518d\u958b\u3057\u307e\u3059\u3002\u30d0\u30c3\u30af\u30a2\u30c3\u30d7 \u30c9\u30e9\u30a4\u30d6\u304c\u3044\u3063\u3071\u3044\u306e\u5834\u5408\u306f\u3001\u4e00\u6642\u7684\u306a\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5171\u6709\u3084null\u30c7\u30d0\u30a4\u30b9\u3078\u306e\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u304c\u5fc5\u8981\u306b\u306a\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\uff08\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u304c\u5bb9\u6613\u306b\u518d\u73fe\u53ef\u80fd\u3067\u306a\u3044\u9650\u308a\u3001\u30ed\u30b0 \u30c1\u30a7\u30fc\u30f3\u304c\u5207\u65ad\u3055\u308c\u308b\u305f\u3081\u5f37\u304f\u63a8\u5968\u3055\u308c\u307e\u305b\u3093\uff09\u3002<\/p>\n<pre><code class=\"language-sql\">-- \u8b66\u544a: \u3053\u308c\u306f\u30ed\u30b0 \u30c1\u30a7\u30fc\u30f3\u3092\u65ad\u3061\u5207\u308a\u3001\u30dd\u30a4\u30f3\u30c8\u30a4\u30f3\u30bf\u30a4\u30e0\u5fa9\u65e7\u3092\u4e0d\u53ef\u80fd\u306b\u3057\u307e\u3059\u3002\n-- \u7d76\u5bfe\u306b\u5fc5\u8981\u306a\u5834\u5408\u306b\u306e\u307f\u4f7f\u7528\u3057\u3001\u76f4\u5f8c\u306b\u5b8c\u5168\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u3092\u53d6\u5f97\u3057\u3066\u304f\u3060\u3055\u3044\u3002\nBACKUP LOG [YourDatabaseName] TO DISK = 'NUL';\n<\/code><\/pre>\n<h3>\u30b7\u30ca\u30ea\u30aa2\uff1a\u9577\u6642\u9593\u5b9f\u884c\u3055\u308c\u3066\u3044\u308b\u30a2\u30af\u30c6\u30a3\u30d6\u306a\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\uff08<code>ACTIVE_TRANSACTION<\/code>\uff09<\/h3>\n<p>\u5358\u4e00\u306e\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u304c\u6570\u6642\u9593\u5b9f\u884c\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u3001\u305d\u306e\u671f\u9593\u4e2d\u305a\u3063\u3068\u30ed\u30b0\u306e\u5207\u308a\u6368\u3066\u304c\u59a8\u3052\u3089\u308c\u307e\u3059\u3002\u307e\u305a\u3001\u554f\u984c\u3068\u306a\u3063\u3066\u3044\u308b\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u3092\u7279\u5b9a\u3057\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-sql\">DBCC OPENTRAN('YourDatabaseName');\n<\/code><\/pre>\n<p>\u3053\u306e\u30b3\u30de\u30f3\u30c9\u306f\u3001\u6700\u3082\u53e4\u3044\u30a2\u30af\u30c6\u30a3\u30d6\u306a\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u3068\u305d\u306e\u30b5\u30fc\u30d0\u30fc \u30d7\u30ed\u30bb\u30b9ID\uff08SPID\uff09\u3092\u8fd4\u3057\u307e\u3059\u3002\u52d5\u7684\u7ba1\u7406\u30d3\u30e5\u30fc\uff08DMV\uff09\u3092\u30af\u30a8\u30ea\u3059\u308b\u3053\u3068\u3067\u3001\u305d\u306eSPID\u304c\u4f55\u3092\u3057\u3066\u3044\u308b\u304b\u8a73\u7d30\u3092\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-sql\">SELECT \n    s.session_id,\n    s.login_name,\n    s.host_name,\n    r.start_time,\n    r.status,\n    r.command,\n    t.text AS QueryText\nFROM sys.dm_exec_sessions s\nJOIN sys.dm_exec_requests r ON s.session_id = r.session_id\nCROSS APPLY sys.dm_exec_sql_text(r.sql_handle) t\nWHERE s.session_id = &lt;SPID_FROM_DBCC_OPENTRAN&gt;;\n<\/code><\/pre>\n<p>\u3082\u3057\u305d\u306e\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u304c\u4e0d\u6b63\u306a\u30af\u30a8\u30ea\u3084\u505c\u6b62\u3057\u305f\u30d7\u30ed\u30bb\u30b9\u3067\u3042\u308b\u5834\u5408\u306f\u3001\u30ed\u30b0\u3092\u89e3\u653e\u3059\u308b\u305f\u3081\u306b\u5f37\u5236\u7d42\u4e86\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002<\/p>\n<pre><code class=\"language-sql\">KILL &lt;SPID&gt;;\n<\/code><\/pre>\n<p><em>\u6ce8\u610f\uff1a\u5927\u898f\u6a21\u306a\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u3092\u5f37\u5236\u7d42\u4e86\u3059\u308b\u3068\u30ed\u30fc\u30eb\u30d0\u30c3\u30af\u304c\u30c8\u30ea\u30ac\u30fc\u3055\u308c\u307e\u3059\u3002\u3053\u308c\u306b\u306f\u304b\u306a\u308a\u306e\u6642\u9593\u304c\u304b\u304b\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u3001\u4e00\u6642\u7684\u306b\u8ffd\u52a0\u306e\u30ed\u30b0 \u30a2\u30af\u30c6\u30a3\u30d3\u30c6\u30a3\u304c\u767a\u751f\u3057\u307e\u3059\u3002\u30ed\u30fc\u30eb\u30d0\u30c3\u30af\u4e2d\u306bSQL Server\u30b5\u30fc\u30d3\u30b9\u3092\u518d\u8d77\u52d5\u3057\u306a\u3044\u3067\u304f\u3060\u3055\u3044\u3002\u518d\u8d77\u52d5\u3059\u308b\u3068\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306f\u5fa9\u65e7\u30e2\u30fc\u30c9\u306b\u5165\u3063\u3066\u3057\u307e\u3044\u307e\u3059\u3002<\/em><\/p>\n<h3>\u30b7\u30ca\u30ea\u30aa3\uff1a\u7dca\u6025\u306e\u9818\u57df\u5272\u308a\u5f53\u3066\uff08\u30c7\u30a3\u30b9\u30af\u304c100%\u30d5\u30eb\uff09<\/h3>\n<p>LDF\u30d5\u30a1\u30a4\u30eb\u304c\u30c9\u30e9\u30a4\u30d6\u5168\u4f53\u3092\u6d88\u8cbb\u3057\u3066\u3057\u307e\u3063\u305f\u5834\u5408\u3001SQL Server\u81ea\u4f53\u304c\u30d0\u30c3\u30af\u30a2\u30c3\u30d7 \u30a4\u30d9\u30f3\u30c8\u3092\u8a18\u9332\u3059\u308b\u305f\u3081\u306b\u308f\u305a\u304b\u306a\u30ed\u30b0\u9818\u57df\u3092\u5fc5\u8981\u3068\u3059\u308b\u305f\u3081\u3001\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u3059\u3089\u5b9f\u884c\u3067\u304d\u307e\u305b\u3093\u3002\u3053\u306e\u30b7\u30ca\u30ea\u30aa\u3067\u306f\u3001\u7a7a\u304d\u5bb9\u91cf\u306e\u3042\u308b\u5225\u306e\u30c9\u30e9\u30a4\u30d6\u306b\u30bb\u30ab\u30f3\u30c0\u30ea \u30ed\u30b0 \u30d5\u30a1\u30a4\u30eb\u3092\u8ffd\u52a0\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-sql\">ALTER DATABASE [YourDatabaseName]\nADD LOG FILE \n(\n    NAME = N'YourDatabaseName_Log2',\n    FILENAME = N'E:TempLogsYourDatabaseName_Log2.ldf',\n    SIZE = 5GB,\n    MAXSIZE = 50GB,\n    FILEGROWTH = 1GB\n);\n<\/code><\/pre>\n<p>\u3053\u308c\u306b\u3088\u308a\u3001SQL Server\u306b\u5373\u5ea7\u306b\u4f59\u88d5\u304c\u751f\u307e\u308c\u307e\u3059\u3002\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u304c\u30aa\u30f3\u30e9\u30a4\u30f3\u306b\u306a\u3063\u305f\u3089\u3001\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3 \u30ed\u30b0\u306e\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u3092\u53d6\u5f97\u3057\u3001\u30bb\u30ab\u30f3\u30c0\u30ea \u30ed\u30b0 \u30d5\u30a1\u30a4\u30eb\u3092\u7a7a\u306b\u3057\u3066\u304b\u3089\u524a\u9664\u3057\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-sql\">-- 1. \u30ed\u30b0\u3092\u5207\u308a\u6368\u3066\u308b\u305f\u3081\u306b\u30ed\u30b0 \u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u3092\u53d6\u5f97\nBACKUP LOG [YourDatabaseName] TO DISK = '...';\n\n-- 2. \u4e00\u6642\u30ed\u30b0 \u30d5\u30a1\u30a4\u30eb\u3092\u7a7a\u306b\u3059\u308b\nDBCC SHRINKFILE (N'YourDatabaseName_Log2', EMPTYFILE);\n\n-- 3. \u4e00\u6642\u30ed\u30b0 \u30d5\u30a1\u30a4\u30eb\u3092\u524a\u9664\u3059\u308b\nALTER DATABASE [YourDatabaseName] REMOVE FILE [YourDatabaseName_Log2];\n<\/code><\/pre>\n<h2>\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3 \u30ed\u30b0\u306e\u4e88\u9632\u3068\u7ba1\u7406\u306e\u305f\u3081\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/h2>\n<p>\u4e8b\u5f8c\u5bfe\u5fdc\u306e\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u306f\u30b9\u30c8\u30ec\u30b9\u304c\u5927\u304d\u304f\u3001SLA\u306b\u3082\u5f71\u97ff\u3057\u307e\u3059\u3002\u30a8\u30f3\u30bf\u30fc\u30d7\u30e9\u30a4\u30ba \u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306e\u5b89\u5b9a\u6027\u306e\u305f\u3081\u306b\u3001\u4e88\u9632\u7684\u306a\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u304a\u3088\u3073\u904b\u7528\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u3092\u5b9f\u88c5\u3059\u308b\u3053\u3068\u304c\u4e0d\u53ef\u6b20\u3067\u3059\u3002<\/p>\n<h3>1. \u5805\u7262\u3067\u81ea\u52d5\u5316\u3055\u308c\u305f\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u6226\u7565\u306e\u5b9f\u88c5<\/h3>\n<p>\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u304c\u5b8c\u5168\u5fa9\u65e7\u30e2\u30c7\u30eb\u306e\u5834\u5408\u3001\u983b\u7e41\u306a\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3 \u30ed\u30b0 \u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u304c\u5fc5\u9808\u3067\u3059\u3002\u76ee\u6a19\u5fa9\u65e7\u6642\u70b9\uff08RPO\uff09\u3068\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u91cf\u306b\u5fdc\u3058\u3066\u3001\u30ed\u30b0 \u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u306f5\u301c15\u5206\u3054\u3068\u306b\u5b9f\u884c\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>CloudSave\u306e\u3088\u3046\u306a\u30a8\u30f3\u30bf\u30fc\u30d7\u30e9\u30a4\u30ba \u30d0\u30c3\u30af\u30a2\u30c3\u30d7 \u30bd\u30ea\u30e5\u30fc\u30b7\u30e7\u30f3\u306f\u3001\u3053\u306e\u30d7\u30ed\u30bb\u30b9\u3092\u5927\u5e45\u306b\u7c21\u7d20\u5316\u3057\u307e\u3059\u3002VDI\uff08\u4eee\u60f3\u30c7\u30d0\u30a4\u30b9 \u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\uff09\u3092\u4ecb\u3057\u3066SQL Server\u3068\u76f4\u63a5\u7d71\u5408\u3059\u308b\u3053\u3068\u3067\u3001CloudSave\u306fDBA\u304c\u30dd\u30ea\u30b7\u30fc\u4e3b\u5c0e\u306e\u9ad8\u983b\u5ea6\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3 \u30ed\u30b0 \u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u3092\u69cb\u6210\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u8907\u96d1\u306a\u30ab\u30b9\u30bf\u30e0SQL\u30a8\u30fc\u30b8\u30a7\u30f3\u30c8 \u30b8\u30e7\u30d6\u3092\u5fc5\u8981\u3068\u305b\u305a\u306b\u3001\u30ed\u30b0\u304c\u7d99\u7d9a\u7684\u306b\u5207\u308a\u6368\u3066\u3089\u308c\u3001\u5b89\u5168\u306b\u6697\u53f7\u5316\u3055\u308c\u3001\u30aa\u30d5\u30b5\u30a4\u30c8\u307e\u305f\u306f\u4e0d\u5909\u306e\u30af\u30e9\u30a6\u30c9 \u30b9\u30c8\u30ec\u30fc\u30b8\u306b\u4fdd\u5b58\u3055\u308c\u308b\u305f\u3081\u3001<code>LOG_BACKUP<\/code> \u5f85\u6a5f\u72b6\u614b\u3092\u9632\u3050\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<h3>2. \u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3 \u30ed\u30b0\u306e\u9069\u5207\u306a\u30b5\u30a4\u30ba\u8a2d\u5b9a\u3068VLF\u306e\u7ba1\u7406<\/h3>\n<p>\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3 \u30ed\u30b0\u306e\u30b5\u30a4\u30ba\u7ba1\u7406\u3092\u81ea\u52d5\u62e1\u5f35\u306b\u983c\u308b\u306e\u306f\u5371\u967a\u306a\u30a2\u30f3\u30c1\u30d1\u30bf\u30fc\u30f3\u3067\u3059\u3002\u81ea\u52d5\u62e1\u5f35\u64cd\u4f5c\u306f\u8ca0\u8377\u304c\u9ad8\u304f\u3001\u30c7\u30a3\u30b9\u30af\u304c\u30bc\u30ed\u521d\u671f\u5316\u3055\u308c\u308b\u9593\uff08\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9 \u30d5\u30a1\u30a4\u30eb\u521d\u671f\u5316\u304c\u6709\u52b9\u3067\u306a\u3044\u9650\u308a\u3002\u306a\u304a\u3001\u30ed\u30b0 \u30d5\u30a1\u30a4\u30eb\u306b\u306f\u9069\u7528\u3055\u308c\u307e\u305b\u3093\uff09\u3001\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u51e6\u7406\u304c\u4e00\u6642\u505c\u6b62\u3057\u307e\u3059\u3002<\/p>\n<p>\u3055\u3089\u306b\u3001\u983b\u7e41\u3067\u5c0f\u3055\u306a\u81ea\u52d5\u62e1\u5f35\uff08\u4e00\u5ea6\u306b10%\u308450MB\u305a\u3064\u306a\u3069\uff09\u306f\u3001<strong>VLF\u306e\u65ad\u7247\u5316<\/strong>\u3092\u62db\u304d\u307e\u3059\u3002\u6570\u5343\u3082\u306e\u5c0f\u3055\u306aVLF\u3092\u6301\u3064\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3 \u30ed\u30b0\u306f\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306e\u8d77\u52d5\u6642\u9593\u3001\u30d0\u30c3\u30af\u30a2\u30c3\u30d7 \u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3001\u30ec\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u9045\u5ef6\u3092\u8457\u3057\u304f\u4f4e\u4e0b\u3055\u305b\u307e\u3059\u3002<\/p>\n<ul>\n<li><strong>\u30ed\u30b0\u306e\u4e8b\u524d\u30b5\u30a4\u30ba\u8a2d\u5b9a:<\/strong> \u6700\u5927\u306e\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u64cd\u4f5c\uff08\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u518d\u69cb\u7bc9\u306a\u3069\uff09\u3092\u5206\u6790\u3057\u3001\u62e1\u5f35\u304c\u767a\u751f\u3057\u306a\u3044\u3088\u3046\u306bLDF\u30d5\u30a1\u30a4\u30eb\u3092\u4e8b\u524d\u306b\u30b5\u30a4\u30ba\u8a2d\u5b9a\u3057\u307e\u3059\u3002<\/li>\n<li><strong>\u56fa\u5b9a\u306e\u81ea\u52d5\u62e1\u5f35\u3092\u8a2d\u5b9a:<\/strong> \u81ea\u52d5\u62e1\u5f35\u3092\u30d1\u30fc\u30bb\u30f3\u30c6\u30fc\u30b8\u3067\u306f\u306a\u304f\u56fa\u5b9a\u30b5\u30a4\u30ba\uff081GB\u30845GB\u306a\u3069\uff09\u306b\u5909\u66f4\u3057\u3001VLF\u304c\u9069\u5207\u306a\u30b5\u30a4\u30ba\u3067\u4f5c\u6210\u3055\u308c\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002<\/li>\n<\/ul>\n<p>\u4ee5\u4e0b\u306e\u30af\u30a8\u30ea\u3092\u4f7f\u7528\u3057\u3066VLF\u6570\u3092\u78ba\u8a8d\u3067\u304d\u307e\u3059\uff08SQL Server 2017\u4ee5\u964d\uff09\u3002<\/p>\n<pre><code class=\"language-sql\">SELECT \n    db_name(database_id) AS DatabaseName,\n    COUNT(vlf_sequence_number) AS VLF_Count\nFROM sys.dm_db_log_info(DB_ID('YourDatabaseName'));\n<\/code><\/pre>\n<p>VLF\u6570\u304c500\u3092\u8d85\u3048\u308b\u5834\u5408\u306f\u3001\u9759\u304b\u306a\u6642\u9593\u5e2f\u3092\u5f85\u3061\u3001\u30ed\u30b0\u3092\u6700\u5c0f\u30b5\u30a4\u30ba\u307e\u3067\u7e2e\u5c0f\u3057\u3066\u304b\u3089\u3001\u5fc5\u8981\u306a\u30b5\u30a4\u30ba\u307e\u3067\u5927\u304d\u306a\u30c1\u30e3\u30f3\u30af\u3067\u624b\u52d5\u3067\u62e1\u5f35\u3057\u76f4\u3059\u3053\u3068\u3092\u691c\u8a0e\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<h3>3. \u30a4\u30f3\u30c7\u30c3\u30af\u30b9 \u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u64cd\u4f5c\u306e\u6700\u9069\u5316<\/h3>\n<p>\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306e\u518d\u69cb\u7bc9\u306f\u3001\u4e00\u62ec\u30ed\u30b0\u5fa9\u65e7\u30e2\u30c7\u30eb\u3067\u3042\u3063\u3066\u3082\uff08\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306e\u7a2e\u985e\u306b\u3088\u308a\u307e\u3059\u304c\uff09\u3001\u5b8c\u5168\u306b\u30ed\u30b0\u306b\u8a18\u9332\u3055\u308c\u308b\u64cd\u4f5c\u3067\u3059\u3002500GB\u306e\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092\u518d\u69cb\u7bc9\u3059\u308b\u3068\u3001\u5c11\u306a\u304f\u3068\u3082500GB\u306e\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3 \u30ed\u30b0 \u30ec\u30b3\u30fc\u30c9\u304c\u751f\u6210\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u4e2d\u306e\u30ed\u30b0\u80a5\u5927\u5316\u3092\u8efd\u6e1b\u3059\u308b\u306b\u306f\uff1a<br \/>\n*   \u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u518d\u69cb\u7bc9\u6642\u306b <code>SORT_IN_TEMPDB = ON<\/code> \u3092\u4f7f\u7528\u3057\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u30bd\u30fc\u30c8 \u30d5\u30a7\u30fc\u30ba\u304cTempDB\u306b\u30aa\u30d5\u30ed\u30fc\u30c9\u3055\u308c\u3001\u30e6\u30fc\u30b6\u30fc \u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306e\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3 \u30ed\u30b0\u3078\u306e\u8ca0\u8377\u304c\u8efd\u6e1b\u3055\u308c\u307e\u3059\u3002<br \/>\n*   \u53ef\u80fd\u306a\u5834\u5408\u306f\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306e<em>\u518d\u69cb\u7bc9<\/em>\u304b\u3089\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306e<em>\u518d\u69cb\u6210<\/em>\u306b\u5207\u308a\u66ff\u3048\u307e\u3059\u3002\u518d\u69cb\u6210\u306f\u30ed\u30b0\u52b9\u7387\u304c\u9ad8\u304f\u3001\u64cd\u4f5c\u5168\u4f53\u3092\u30ed\u30fc\u30eb\u30d0\u30c3\u30af\u3059\u308b\u3053\u3068\u306a\u304f\u4e2d\u65ad\u3067\u304d\u308b\u305f\u3081\u3067\u3059\u3002<br \/>\n*   \u5927\u898f\u6a21\u306a <code>DELETE<\/code> \u3084 <code>UPDATE<\/code> \u64cd\u4f5c\u3092\u30d0\u30c3\u30c1\u51e6\u7406\u3057\u307e\u3059\u30021\u3064\u306e\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u30671,000\u4e07\u884c\u3092\u524a\u9664\u3059\u308b\u306e\u3067\u306f\u306a\u304f\u30015\u4e07\u884c\u305a\u3064\u306e\u30c1\u30e3\u30f3\u30af\u306b\u5206\u3051\u3066\u524a\u9664\u3057\u3001\u30b3\u30df\u30c3\u30c8\u3057\u3066\u30d0\u30c3\u30c1\u9593\u3067\u30ed\u30b0 \u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u304c\u30ed\u30b0\u3092\u5207\u308a\u6368\u3066\u3089\u308c\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002<\/p>\n<h3>4. \u9ad8\u53ef\u7528\u6027\u3068\u30ec\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3 \u30c8\u30dd\u30ed\u30b8\u306e\u76e3\u8996<\/h3>\n<p>AlwaysOn\u53ef\u7528\u6027\u30b0\u30eb\u30fc\u30d7\u3067\u306f\u3001\u3059\u3079\u3066\u306e\u540c\u671f\u304a\u3088\u3073\u975e\u540c\u671f\u30bb\u30ab\u30f3\u30c0\u30ea \u30ec\u30d7\u30ea\u30ab\u3067\u30ed\u30b0 \u30ec\u30b3\u30fc\u30c9\u304c\u53cd\u6620\u3055\u308c\u308b\u307e\u3067\u3001\u30d7\u30e9\u30a4\u30de\u30ea \u30ec\u30d7\u30ea\u30ab\u306f\u30ed\u30b0\u3092\u5207\u308a\u6368\u3066\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u305b\u3093\u3002<\/p>\n<p>\u30bb\u30ab\u30f3\u30c0\u30ea \u30ec\u30d7\u30ea\u30ab\u304c\u30aa\u30d5\u30e9\u30a4\u30f3\u306b\u306a\u3063\u305f\u308a\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5e2f\u57df\u5e45\u304c\u30d7\u30e9\u30a4\u30de\u30ea\u306e\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u751f\u6210\u901f\u5ea6\u306b\u8ffd\u3044\u3064\u304b\u306a\u304b\u3063\u305f\u308a\u3059\u308b\u3068\u3001\u30d7\u30e9\u30a4\u30de\u30ea\u306e\u9001\u4fe1\u30ad\u30e5\u30fc\u304c\u5927\u304d\u304f\u306a\u308a\u3001\u30ed\u30b0\u304c\u3044\u3063\u3071\u3044\u306b\u306a\u308a\u307e\u3059\uff08<code>AVAILABILITY_REPLICA<\/code> \u5f85\u6a5f\u30bf\u30a4\u30d7\uff09\u3002<\/p>\n<p><code>SQLServer:Replica &gt; Log Send Queue<\/code> \u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9 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\u30ed\u30b0\u304c\u3044\u3063\u3071\u3044\u306b\u306a\u308b\u3053\u3068\u306f\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u7ba1\u7406\u8005\u306b\u3068\u3063\u3066\u306e\u901a\u904e\u5100\u793c\u3067\u3059\u304c\u3001\u9577\u6642\u9593\u306e\u30c0\u30a6\u30f3\u30bf\u30a4\u30e0\u3092\u62db\u304f\u5fc5\u8981\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u5148\u884c\u66f8\u304d\u8fbc\u307f\u30ed\u30b0\u3068VLF\u306e\u30e1\u30ab\u30cb\u30ba\u30e0\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u3067\u3001<code>sys.databases<\/code> \u3092\u4f7f\u7528\u3057\u3066\u6839\u672c\u539f\u56e0\u3092\u8fc5\u901f\u306b\u8a3a\u65ad\u3057\u3001\u9069\u5207\u306a\u8fc5\u901f\u5fa9\u65e7\u6226\u7565\u3092\u9069\u7528\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u9577\u671f\u7684\u306a\u5b89\u5b9a\u6027\u306f\u3001\u4e8b\u5f8c\u5bfe\u5fdc\u306e\u4fee\u6b63\u304b\u3089\u8131\u5374\u3059\u308b\u3053\u3068\u306b\u304b\u304b\u3063\u3066\u3044\u307e\u3059\u3002\u30ed\u30b0 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