{"id":77,"date":"2020-10-22T10:21:41","date_gmt":"2020-10-22T02:21:41","guid":{"rendered":"https:\/\/www.db2go.net\/?p=77"},"modified":"2020-10-22T10:23:06","modified_gmt":"2020-10-22T02:23:06","slug":"11g-adg%e7%9a%84%e4%b8%80%e4%ba%9b%e6%9f%a5%e6%bc%8f%e8%a1%a5%e7%bc%ba","status":"publish","type":"post","link":"https:\/\/www.db2go.net\/?p=77","title":{"rendered":"11g ADG\u7684\u4e00\u4e9b\u67e5\u6f0f\u8865\u7f3a"},"content":{"rendered":"<p>11g ADG\u7684\u4e00\u4e9b\u67e5\u6f0f\u8865\u7f3a<br \/>\n<!--more--><\/p>\n<h1>1. \u4fdd\u62a4\u6a21\u5f0f<\/h1>\n<pre><code class=\"language-sql line-numbers\">SELECT DATABASE_ROLE,PROTECTION_MODE,PROTECTION_LEVEL from v$database;\n<\/code><\/pre>\n<h2>1.1. \u6700\u5927\u6027\u80fd(maximize performance)<\/h2>\n<p><strong>\u8fd9\u662fdataguard\u9ed8\u8ba4\u7684\u4fdd\u62a4\u6a21\u5f0f\u3002<\/strong> primay\u4e0a\u7684\u4e8b\u52a1commit\u524d\u4e0d\u9700\u8981\u4ecestandby\u4e0a\u6536\u5230\u53cd\u9988\u4fe1\u606f\uff08\u4e3b\u6570\u636e\u5e93\u7684\u63d0\u4ea4\u64cd\u4f5c\u4e0d\u7b49\u5f85STANDBY\uff09\uff0c\u8be5\u6a21\u5f0f\u5728primary\u6545\u969c\u65f6\u53ef\u80fd\u4e22\u5931\u6570\u636e\uff0c\u4f46standby\u5bf9primary\u7684\u6027\u80fd\u5f71\u54cd\u6700\u5c0f\u3002 \u53ef\u4ee5\u4f7f\u7528LGWR ASYNC\u6216\u8005ARCH\u4e24\u79cd\u4f20\u8f93\u6a21\u5f0f\u3002 ARCH\u4f20\u8f93\u6a21\u5f0f\uff1aPrimary DB\u4e0a\u7684online redo log\u5199\u6ee1\u6216\u5176\u4ed6\u6761\u4ef6\u5f15\u8d77redo log\u5199\u5f52\u6863\u7684\u65f6\u5019\uff0credo log\u751f\u6210\u7684archived log file\u5199\u5230\u672c\u5730\u5f52\u6863\u76ee\u5f55\u7684\u540c\u65f6\uff0c\u5199\u5165\u4e86Standby\u5f52\u6863\u76ee\u5f55\u3002\u53ea\u662fPrimary db\u4e0a\u7684online redo log\u5207\u6362\u4e0d\u5fc5\u7b49Standby\u4e0a\u7684\u5199\u5f52\u6863\u52a8\u4f5c\u7ed3\u675f\u3002<\/p>\n<h2>1.2. \u6700\u5927\u53ef\u7528(maximize availability)<\/h2>\n<p>\u5728\u6b63\u5e38\u60c5\u51b5\u4e0b\uff0c\u6700\u5927\u53ef\u7528\u6a21\u5f0f\u548c\u6700\u5927\u4fdd\u62a4\u6a21\u5f0f\u4e00\u6837\uff1b\u5728standby\u4e0d\u53ef\u7528\u65f6\uff0c\u6700\u5927\u53ef\u7528\u6a21\u5f0f\u4f1a\u81ea\u52a8\u964d\u4f4e\u6210\u6700\u5927\u6027\u80fd\u6a21\u5f0f\uff0c\u6240\u4ee5standby\u6545\u969c\u4e0d\u4f1a\u5bfc\u81f4primay\u4e0d\u53ef\u7528\u3002\u5728\u95ee\u9898\u7ea0\u6b63\u4e4b\u540e\uff0cStandby\u548c\u4e3b\u6570\u636e\u5e93\u8fdb\u884c\u518d\u540c\u6b65\uff0c\u81f3\u5c11\u6709\u4e00\u4e2astandby\u53ef\u7528\u7684\u60c5\u51b5\u4e0b\uff0c\u5373\u4f7fprimary down\u673a\uff0c\u4e5f\u80fd\u4fdd\u8bc1\u4e0d\u4e22\u5931\u6570\u636e\u3002(\u4e0d\u8fc7\u5f53\u95ee\u9898\u4fee\u590d\uff0c\u518d\u540c\u6b65\u4e4b\u524d\u6709\u5fc5\u8981FAILOVER,\u90a3\u4e48\u6709\u4e9b\u6570\u636e\u53ef\u80fd\u4f1a\u4e22\u5931)\u3002\u6700\u5927\u53ef\u7528\u6027\u6a21\u5f0fStandby\u5fc5\u987b\u914d\u7f6eStandby Redo log\uff0cOracle\u63a8\u8350\u6700\u5927\u53ef\u7528\u6a21\u5f0f\u4f7f\u7528LGWR ASYNC\uff08\u5f02\u6b65\uff09\u6a21\u5f0f\u4f20\u8f93\u3002<\/p>\n<p>\u91c7\u7528\u6700\u5927\u53ef\u7528\u7684data guard\u6a21\u5f0f\uff0c\u4e3b\u5e93\u5f80\u5907\u5e93\u4f20\u9012\u5728\u7ebf\u65e5\u5fd7(online redo log)\u4fe1\u606f\uff0c\u5728\u7ebf\u65e5\u5fd7\u4fe1\u606f\u5199\u5165\u5907\u7528\u5e93\u7684standby redo log,\u8fd9\u4e9bstandby redo log\u5f52\u6863\u540e\uff0c\u5907\u7528\u5e93\u5e94\u7528\u5f52\u6863\u65e5\u5fd7\u3002<\/p>\n<h2>1.3. \u6700\u5927\u4fdd\u62a4(maximize protection)<\/h2>\n<p>\u6700\u9ad8\u7ea7\u522b\u7684\u4fdd\u62a4\u6a21\u5f0f\u3002primay\u4e0a\u7684\u4e8b\u52a1\u5728commit\u524d\u5fc5\u987b\u786e\u8ba4redo\u5df2\u7ecf\u4f20\u9012\u5230\u81f3\u5c11\u4e00\u4e2astandby\u4e0a\uff0c\u5982\u679c\u6240\u6709standby\u4e0d\u53ef\u7528\uff0c\u5219primary\u4f1a\u6302\u8d77\u3002\u8be5\u6a21\u5f0f\u80fd\u4fdd\u8bc1\u96f6\u6570\u636e\u4e22\u5931\u3002\u5bf9\u4e8e\u6700\u5927\u4fdd\u62a4\u548c\u6700\u9ad8\u53ef\u7528\u6027\u6a21\u5f0f\uff0cStandby\u6570\u636e\u5e93\u5fc5\u987b\u914d\u7f6estandby redo log\uff0c\u5e76\u4e14oracle\u63a8\u8350\u6240\u6709\u6570\u636e\u5e93\u90fd\u4f7f\u7528LGWR ASYNC\u6a21\u5f0f\u4f20\u8f93\u3002<\/p>\n<h1>2. \u65e5\u5fd7\u7684\u4f20\u8f93\u6a21\u5f0f<\/h1>\n<p>ARCH\u4f20\u8f93\u6a21\u5f0f\uff1aPrimary DB\u4e0a\u7684online redo log\u5199\u6ee1\u6216\u5176\u4ed6\u6761\u4ef6\u5f15\u8d77redo log\u5199\u5f52\u6863\u7684\u65f6\u5019\uff0credo log\u751f\u6210\u7684archived log file\u5199\u5230\u672c\u5730\u5f52\u6863\u76ee\u5f55\u7684\u540c\u65f6\uff0c\u5199\u5165\u4e86Standby\u5f52\u6863\u76ee\u5f55\u3002\u53ea\u662fPrimary db\u4e0a\u7684online redo log\u5207\u6362\u4e0d\u5fc5\u7b49Standby\u4e0a\u7684\u5199\u5f52\u6863\u52a8\u4f5c\u7ed3\u675f\u3002 LGWR\u8fd8\u5206\u4e3aLGWR ASYNC(\u5f02\u6b65)\u548cLGWR SYNC(\u540c\u6b65)\u4e24\u79cd\u3002<\/p>\n<table>\n<thead>\n<tr>\n<th><\/th>\n<th>\u6700\u5927\u4fdd\u62a4<\/th>\n<th>\u6700\u5927\u53ef\u7528<\/th>\n<th>\u6700\u5927\u6027\u80fd<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u8fdb\u7a0b<\/td>\n<td>LGWR<\/td>\n<td>LGWR<\/td>\n<td>LGWR\u6216ARCH<\/td>\n<\/tr>\n<tr>\n<td>\u7f51\u7edc\u4f20\u8f93\u6a21\u5f0f<\/td>\n<td>SYNC<\/td>\n<td>SYNC<\/td>\n<td>LGWR\u65f6\u8bbe\u7f6eASYNC<\/td>\n<\/tr>\n<tr>\n<td>\u78c1\u76d8\u5199\u64cd\u4f5c<\/td>\n<td>AFFIRM<\/td>\n<td>AFFIRM<\/td>\n<td>NOAFFIRM<\/td>\n<\/tr>\n<tr>\n<td>\u5907\u7528\u65e5\u5fd7<\/td>\n<td>YES<\/td>\n<td>\u7269\u7406\u5907\u7528\u9700\u8981<\/td>\n<td>LGWR\u548c\u7269\u7406\u5907\u7528\u65f6\u9700\u8981<\/td>\n<\/tr>\n<tr>\n<td>\u5907\u5e93\u7c7b\u578b<\/td>\n<td>\u7269\u7406<\/td>\n<td>ALL<\/td>\n<td>ALL<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h1>3. \u91cd\u8981\u53c2\u6570LOG_ARCHIVE_DEST_n\u8bf4\u660e<\/h1>\n<p>\u8fd9\u662fData Guard\u91cd\u505a\u4f20\u8f93\u7684\u4e3b\u8981\u53c2\u6570\uff0c\u901a\u5e38\u5728\u4e3b\u6570\u636e\u5e93\u4e0a\u53d1\u6325\u4f5c\u7528\u3002\u8be5\u53c2\u6570\u80fd\u7528\u4e8e\u6307\u5b9aORL\u6587\u4ef6\u6216\u8005SRL\u6587\u4ef6\u7684\u5f52\u6863\u65e5\u5fd7\u6587\u4ef6\u5e94\u8be5\u53bb\u5f80\u54ea\u91cc\u3002<\/p>\n<p>\u8be5\u53c2\u6570\u670917\u4e2a\u7279\u6027\uff0c\u8981\u4f7f\u7528Data Guard\u5c06\u91cd\u505a\u6570\u636e\u6b63\u786e\u4f20\u8f93\u5230\u5907\u7528\u6570\u636e\u5e93\uff0c\u53ea\u9700\u8bbe\u7f6e\u5176\u4e2d7\u4e2a\u7279\u6027\u3002<\/p>\n<p>7\u4e2a\u7279\u6027\uff1a<\/p>\n<h2>3.1. SERVICE<\/h2>\n<p>\u6307\u5b9a\u521b\u5efa\u7684\u6307\u5411\u5907\u7528\u6570\u636e\u5e93\u7684<code>TNSNAMES<\/code>\u63cf\u8ff0\u7b26\u3002<\/p>\n<h2>3.2. SYNC<\/h2>\n<p>\u6307\u5b9a\u51c6\u5907\u4f7f\u7528\u540c\u6b65\u65b9\u6cd5\u4f20\u8f93\u91cd\u505a\u6570\u636e\uff0c\u8fd9\u610f\u5473\u7740LGWR\u8fdb\u7a0b\u5c06\u7b49\u5f85\u6765\u81eaLNS\u7684\u786e\u8ba4\u6d88\u606f\uff0c\u7136\u540e\u624d\u544a\u77e5\u5ba2\u6237\u7aef\u4e8b\u52a1\u5df2\u7ecf\u63d0\u4ea4\u3002<\/p>\n<h2>3.3. ASYNC<\/h2>\n<p>\u5f02\u6b65\u4f20\u8f93\u65b9\u5f0f\u3002\u9ed8\u8ba4\u65b9\u5f0f\u3002<\/p>\n<h2>3.4. NET_TIMEOUT<\/h2>\n<p>\uff08\u6700\u9ad8\u53ef\u7528\u6027\u6a21\u5f0f\uff09\u6307\u5b9aLGWR\u8fdb\u7a0b\u7b49\u5f85LNS\u8fdb\u7a0b\u505a\u51fa\u54cd\u5e94\u7684\u79d2\u6570\uff0c\u5982\u679c\u8d85\u8fc7\u6307\u5b9a\u65f6\u95f4\uff0c\u5c06\u56e0\u6545\u969c\u653e\u5f03\u5907\u7528\u3002\u9ed8\u8ba4\u662f30\u79d2\uff0c\u4f46\u6839\u636e\u7f51\u7edc\u7684\u53ef\u9760\u6027\uff0c 10\uff5e15\u79d2\u4f1a\u662f\u66f4\u6070\u5f53\u7684\u503c\uff0c\u5177\u4f53\u53d6\u51b3\u4e8e\u7f51\u7edc\u53ef\u9760\u6027\u3002\u4e0d\u80fd\u8bbe\u7f6e\u4e3a\u4f4e\u4e8e10\u79d2\uff0c\u90a3\u6837\u5728\u5907\u7528\u6570\u636e\u5e93\u6062\u590d\u540e\uff0c\u5c06\u9047\u5230\u91cd\u8fde\u5931\u8d25\u7684\u60c5\u5f62\uff0c\u56e0\u4e3a\u5b8c\u6210\u6240\u6709\u91cd\u8fde\u9700\u8981\u8017\u8d39\u51e0\u79d2\u949f\u7684\u65f6\u95f4\u3002<\/p>\n<h2>3.5. REOPEN<\/h2>\n<p>\u63a7\u5236Data Guard\u5141\u8bb8\u4e3b\u6570\u636e\u5e93\u5c1d\u8bd5\u91cd\u8fde\u6545\u969c\u5907\u7528\u6570\u636e\u5e93\u524d\u7b49\u5f85\u7684\u65f6\u95f4\u3002 \u9ed8\u8ba4\u4e3a300\u79d2\uff0c\u4e5f\u5c31\u662f\u8bf4\uff0c\u4e0d\u8bba\u5907\u5e93\u662f\u5426\u6062\u590d\uff0c\u4e5f\u8981\u7b49300\u79d2\u540e\u624d\u91cd\u8fde\u5907\u5e93\u3002\u53ef\u4ee5\u5c06\u5176\u8bbe\u7f6e\u4e3a30\u79d2\u751a\u81f315\u79d2\u3002<\/p>\n<h2>3.6. DB_UNIQUE_NAME<\/h2>\n<p>\u8981\u5728LOG_ARCHIVE_DEST_n\u53c2\u6570\u4e2d\u4f7f\u7528\u8be5\u7279\u6027\uff0c\u8fd8\u9700\u8981\u8bbe\u7f6eLOG_ARCHIVE_CONFIG\u53c2\u6570\uff1b\u5426\u5219Data Guard\u5c06\u62d2\u7edd\u8fde\u63a5\u5230\u8be5\u76ee\u6807\u3002\u8fd9\u4e2a\u7528\u4f5cSERVICE\u76ee\u6807\uff08\u8fdc\u7a0b\uff09\u7684\u540d\u79f0\u662f\u4e3a\u8fde\u63a5\u53e6\u4e00\u7aef\u7684\u6570\u636e\u5e93\u6307\u5b9a\u7684\u552f\u4e00\u540d\u79f0\uff08\u5907\u7528\u6570\u636e\u5e93\uff09\u3002 \u5fc5\u987b\u5c06\u8fd9\u4e2a\u552f\u4e00\u540d\u79f0\u8f93\u5165\u4e24\u7aef\u6570\u636e\u5e93\u7684LOG_ARCHIVE_CONFIG\u53c2\u6570\u4e2d\u3002\u5f53\u4e3b\u6570\u636e\u5e93\u8fde\u63a5\u5907\u7528\u6570\u636e\u5e93\u65f6\uff0c\u4f1a\u5411\u5907\u7528\u53d1\u9001\u81ea\u5df1\u7684\u552f\u4e00\u6570\u636e\u5e93\u540d\uff0c\u540c\u65f6\u8981\u6c42\u5907\u7528\u8fd4\u56de\u552f\u4e00\u540d\u79f0\u3002\u5907\u7528\u5c06\u68c0\u67e5\u914d\u7f6e\u53c2\u6570LOG_ARCHIVE_CONFIG\uff0c\u786e\u4fdd\u4e3b\u6570\u636e\u5e93\u7684\u552f\u4e00\u540d\u79f0\u7684\u786e\u5b58\u5728\u3002\u5982\u679c\u4e0d\u5b58\u5728\uff0c\u5c06\u62d2\u7edd\u8fde\u63a5\u3002\u5982\u679c\u5b58\u5728\uff0c\u5907\u7528\u6570\u636e\u5e93\u4f1a\u5c06\u81ea\u5df1\u7684\u552f\u4e00\u540d\u79f0\u53d1\u56de\u5230\u4e3bLNS\u8fdb\u7a0b\u3002\u5982\u679c\u8fd4\u56de\u503c\u4e0e\u8be5\u7279\u6027\u4e2d\u6307\u5b9a\u7684\u503c\u4e0d\u5339\u914d\uff0c\u8fde\u63a5\u5c06\u7ec8\u6b62\u3002<\/p>\n<h2>3.7. VALID_FOR<\/h2>\n<p>\u5efa\u8bae\u4f7f\u7528\u8be5\u7279\u6027\uff0c\u5b83\u7684\u4e3b\u8981\u4f5c\u7528\u662f\u5b9a\u4e49\u4f55\u65f6\u4f7f\u7528LOG_ARCHIVE_DEST_n\u76ee\u6807\u53c2\u6570\uff0c\u4ee5\u53ca\u5e94\u5728\u54ea\u7c7b\u91cd\u505a\u65e5\u5fd7\u6587\u4ef6\u4e0a\u8fd0\u884c\u3002<\/p>\n<p>\u4e0b\u9762\u662f\u65e5\u5fd7\u6587\u4ef6\u5408\u6cd5\u503c\uff1a<\/p>\n<pre><code class=\"language-text line-numbers\">      ONLINE_LOGFILE    \u4ec5\u5f52\u6863ORL\u6587\u4ef6\u65f6\u6709\u6548\n      STANDBY_LOGFILE   \u4ec5\u5f52\u6863SRL\u6587\u4ef6\u65f6\u6709\u6548\n      ALL_LOGFILES      \u65e0\u8bba\u5bf9\u4e8e\u90a3\u79cd\u91cd\u505a\u65e5\u5fd7\u6587\u4ef6\u7c7b\u578b\u90fd\u6709\u6548\n<\/code><\/pre>\n<p>\u4e0b\u9762\u662f\u89d2\u8272\u5408\u6cd5\u503c\uff1a<\/p>\n<pre><code class=\"language-text line-numbers\">     PRIMAMRY_ROLE     \u4ec5\u5bf9\u62c5\u5f53\u4e3b\u89d2\u8272\u7684\u6570\u636e\u5e93\u6709\u6548\n     STANDBY_ROLE      \u4ec5\u5bf9\u62c5\u5f53\u5907\u7528\u89d2\u8272\u7684\u6570\u636e\u5e93\u6709\u6548\n     ALL_ROLES         \u65e0\u8bba\u4f55\u79cd\u6570\u636e\u5e93\u89d2\u8272\u90fd\u6709\u6548\n<\/code><\/pre>\n<h2>3.8. \u5b9e\u4f8b<\/h2>\n<p>\u73b0\u5728\u770b\u4e00\u4e0bLOG_ARCHIVE_DEST_n\uff0c\u4f8b\u5982\uff0c\u4e3a\u4e3b\u5e93\u914d\u7f6e\u4e00\u4e2a\u6700\u9ad8\u53ef\u7528\u6027\u6a21\u5f0f\u7684\u5907\u5e93\uff0c\u5219\u5728\u4e3b\u5e93\u4e2d\u8bbe\u7f6eLOG_ARCHIVE_DEST_n\u53c2\u6570\uff0c\u914d\u7f6e\u53ef\u80fd\u5982\u4e0b\uff1a<\/p>\n<pre><code class=\"language-sql line-numbers\">log_archive_dest_2='service=tyqxdg1\n                  SYNC REOPEN=15 NET_TIMEOUT=15\n                  valid_for=(ONLINE_LOGFILES,PRIMARY_ROLE)\n                  db_unique_name=tyqxdg'\n<\/code><\/pre>\n<p>\u518d\u6dfb\u52a0\u4e00\u4e2a\u6700\u9ad8\u6027\u80fd\u6a21\u5f0f\u7684\u5907\u5e93\uff1a<\/p>\n<pre><code class=\"language-sql line-numbers\">log_archive_dest_3='service=tyqxdg2\n                  ASYNC REOPEN=15\n                  valid_for=(ONLINE_LOGFILES,PRIMARY_ROLE)\n                  db_unique_name=tyqxdg2'\n<\/code><\/pre>\n<p>\u56e0\u4e3a\u4f7f\u7528\u9002\u5f53\u7684DB_UNIQUE_NAME\u7279\u6027\uff0c\u6211\u4eec\u4e5f\u9700\u8981\u5b9a\u4e49LOG_ARCHIVE_CONFIG\u53c2\u6570\uff1a<\/p>\n<pre><code class=\"language-sql line-numbers\"> log_archive_config='dg_config=(tyqx,tyqxdg1,tyqxdg2)'\n<\/code><\/pre>\n<p>\u4ee5\u4e0b\u7684\u7279\u6027\u4e3a\u53ef\u9009\u7279\u6027\uff1a<\/p>\n<ul>\n<li>AFFIRM\uff1aSYNC\u6a21\u5f0f\u7684\u9ed8\u8ba4\u65b9\u5f0f\u3002\u8981\u6c42LNS\u8fdb\u7a0b\u7b49\u5f85RFS\u5bf9SRL\u6587\u4ef6\u6267\u884c\u76f4\u63a5I\/O\u540e\u624d\u8fd4\u56de\u6210\u529f\u6d88\u606f\u3002<\/li>\n<li>\u5728Oracle Database 11g\u4e2d\uff0c\u4f1a\u4e3aASYNC\u76ee\u6807\u5ffd\u7565AFFIRM\u3002<\/li>\n<li>NOAFFIRM\uff1a\u5982\u679c\u672a\u6307\u5b9a\uff0c\u5c06\u662fASYNC\u76ee\u6807\u7684\u9ed8\u8ba4\u65b9\u5f0f\u3002<\/li>\n<li>COMPRESSION\uff1a\u53d1\u9001\u95f4\u9694\u7684ARCH\u8fdb\u7a0b\u5728\u53d1\u9001\u65f6\u538b\u7f29\u5f52\u6863\u5185\u5bb9\u3002<\/li>\n<li>COMPRESSION=ENABLE<\/li>\n<li>MAX_CONNECTIONS\uff1a\u6307\u5b9a\u5b50\u53d1\u9001\u95f4\u9694\u65f6\u7528\u4e8e\u5907\u7528\u76ee\u6807\u7684\u5f52\u6863\u8fdb\u7a0b\u6570\u91cf\u3002<\/li>\n<li>MAX_CONNECTIONS=5<\/li>\n<li>DELAY\uff1a\u6307\u5b9a\u76ee\u6807\u5907\u7528\u6570\u636e\u5e93\u7684\u5e94\u7528\u8fdb\u7a0b\u5728\u8be5\u7279\u6027\u5b9a\u4e49\u7684\u5ef6\u8fdf\u79d2\u6570\u4e4b\u540e\u518d\u5e94\u7528\u91cd\u505a\u6570\u636e\u3002\u57fa\u672c\u5e9f\u5f03\u3002<\/li>\n<li>ALTERNATE\uff1a\u4f7f\u7528\u66ff\u4ee3\u76ee\u6807\uff0c\u53ef\u4ee5\u91cd\u5b9a\u5411\u5f52\u6863\u8fdb\u7a0b\uff0c\u4ee5\u4fbf\u4e3a\u5f52\u6863\u65e5\u5fd7\u4f7f\u7528\u5907\u7528\u78c1\u76d8\u3002<\/li>\n<\/ul>\n<h1>4. \u4e3b\u5907\u5e93\u7684srl\u548crl<\/h1>\n<h2>4.1. \u4e3b\u5e93<\/h2>\n<ul>\n<li>\u4e3b\u5e93\u7684rl\u7684\u4f5c\u7528\u4e0d\u591a\u8bf4<\/li>\n<li>\u4e3b\u5e93\u7684srl\u5728\u914d\u7f6e\u5b8c\u6210\u65f6\uff0c\u5176\u5b9e\u662f\u6ca1\u4ec0\u4e48\u7528\u7684\uff0c\u53ea\u6709\u5f53\u505a\u5207\u6362\u7684\u65f6\u5019\uff0c\u89d2\u8272\u53d8\u4e3astandby\u65f6\u624d\u4f1a\u6709\u7528<\/li>\n<\/ul>\n<h2>4.2. \u5907\u5e93<\/h2>\n<ul>\n<li>\u5907\u5e93\u7684rl\u5176\u5b9e\u6ca1\u4ec0\u4e48\u7528\u7684\uff0crl\u5728\u4e0d\u5b58\u5728\u7684\u65f6\u5019\uff0c\u6bcf\u6b21\u542f\u52a8\u65f6alert\u4f1a\u6709\u8b66\u544a\uff0c\u4e00\u65e6\u5207\u6362\u4e3a\u4e3b\u5e93\u65f6\u4f1a\u81ea\u52a8\u521b\u5efa<\/li>\n<li>\u5907\u5e93\u7684srl\u7684\u4f5c\u7528\u5728\u4e8e\u63a5\u6536\u4e3b\u5e93\u4f20\u8fc7\u6765\u7684redo log\uff0c\u5907\u5e93\u518d\u91cd\u65b0apply\uff0c\u8fd9\u6837\u5c31\u53ef\u4ee5\u505a\u5230adg\u7684\u5b9e\u65f6\u540c\u6b65\u3002<\/li>\n<li>\u5f53\u7136\uff0c\u5176\u5b9e\u5907\u5e93\u6ca1\u6709srl\u4e5f\u662f\u53ef\u4ee5\u7684\uff0c\u8fd9\u6837\u53ea\u662f\u4e0d\u80fd\u505a\u5b9e\u65f6\u540c\u6b65\u4e86\uff0c\u5907\u5e93\u5c31\u53ea\u80fd\u6536\u5230\u4e3b\u5e93\u4f20\u6765\u7684\u5f52\u6863\u65e5\u5fd7\u624d\u53ef\u4ee5recover\uff0c\u800c\u4e14\u4e3b\u5e93\u914d\u7f6elog_archive_dest_n\u53c2\u6570\u7684\u65f6\u5019\u4e0d\u80fd\u7528lgwr\u548csync\u4e86\u3002<\/li>\n<\/ul>\n<h1>5. \u7ea7\u8054\u66f4\u65b0<\/h1>\n<p>\u6709\u65f6\u5019\u751f\u4ea7\u4e0a\uff0c\u4e00\u4e3b\u591a\u5907\u7684\u9700\u6c42\u4f1a\u53d8\u6210\uff1a\u4e00\u4e3b\u4e00\u5907\u4e00\u7ea7\u8054\u3002 \u8fd9\u4e2a\u65f6\u5019\uff0c\u5bf9\u4e8e\u7ea7\u8054\u5e93\u7684\u4e3b\u5907\u5e93\u914d\u7f6e\u548c\u666e\u901a\u7684\u4e3b\u5907\u5e93\u7c7b\u4f3c\uff0c\u53ea\u662f\u9700\u8981\u6ce8\u610f\u53d1\u9001\u65e5\u5fd7\u7684\u53c2\u6570\u91cc\u9762\uff0clog_archive_dest_n\u8981\u914d\u7f6e\u6210standby\u7684\uff0c\u4ee5\u53ca\u89d2\u8272\u8981\u53d8\u4e3a<code>standby_logfile<\/code>\uff0c<code>standby_role<\/code><\/p>\n","protected":false},"excerpt":{"rendered":"<p>11g ADG\u7684\u4e00\u4e9b\u67e5\u6f0f\u8865\u7f3a<\/p>\n <a href=\"https:\/\/www.db2go.net\/?p=77\" title=\"11g ADG\u7684\u4e00\u4e9b\u67e5\u6f0f\u8865\u7f3a\" class=\"entry-more-link\"><span>Read More<\/span> <span class=\"screen-reader-text\">11g ADG\u7684\u4e00\u4e9b\u67e5\u6f0f\u8865\u7f3a<\/span><\/a>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"Layout":"","footnotes":""},"categories":[4],"tags":[],"class_list":["entry","author-suredandan","has-more-link","post-77","post","type-post","status-publish","format-standard","category-oracle"],"views":1348,"_links":{"self":[{"href":"https:\/\/www.db2go.net\/index.php?rest_route=\/wp\/v2\/posts\/77","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.db2go.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.db2go.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.db2go.net\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.db2go.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=77"}],"version-history":[{"count":3,"href":"https:\/\/www.db2go.net\/index.php?rest_route=\/wp\/v2\/posts\/77\/revisions"}],"predecessor-version":[{"id":80,"href":"https:\/\/www.db2go.net\/index.php?rest_route=\/wp\/v2\/posts\/77\/revisions\/80"}],"wp:attachment":[{"href":"https:\/\/www.db2go.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=77"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.db2go.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=77"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.db2go.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=77"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}