{"id":24205,"date":"2021-11-28T16:36:11","date_gmt":"2021-11-28T08:36:11","guid":{"rendered":"https:\/\/aqzt.com\/24205.html"},"modified":"2021-11-28T16:36:11","modified_gmt":"2021-11-28T08:36:11","slug":"%e6%b7%b1%e5%85%a5%e7%90%86%e8%a7%a3jdbc%e7%9a%84%e8%b6%85%e6%97%b6%e8%ae%be%e7%bd%ae","status":"publish","type":"post","link":"https:\/\/aqzt.com\/24205.html","title":{"rendered":"\u6df1\u5165\u7406\u89e3JDBC\u7684\u8d85\u65f6\u8bbe\u7f6e"},"content":{"rendered":"<p>\u6070\u5f53\u7684JDBC\u8d85\u65f6\u8bbe\u7f6e\u80fd\u591f\u6709\u6548\u5730\u51cf\u5c11\u670d\u52a1\u5931\u6548\u7684\u65f6\u95f4\u3002\u672c\u6587\u5c06\u5bf9\u6570\u636e\u5e93\u7684\u5404\u79cd\u8d85\u65f6\u8bbe\u7f6e\u53ca\u5176\u8bbe\u7f6e\u65b9\u6cd5\u505a\u4ecb\u7ecd\u3002\u00a0<\/p>\n<\/p>\n<p>\u771f\u5b9e\u6848\u4f8b\uff1a\u5e94\u7528\u670d\u52a1\u5668\u5728\u906d\u5230DDos\u653b\u51fb\u540e\u65e0\u6cd5\u54cd\u5e94<br \/>\n\u00a0<\/p>\n<p>\u5728\u906d\u5230DDos\u653b\u51fb\u540e\uff0c\u6574\u4e2a\u670d\u52a1\u90fd\u57ae\u6389\u4e86\u3002\u7531\u4e8e\u7b2c\u56db\u5c42\u4ea4\u6362\u673a\u4e0d\u582a\u91cd\u8d1f\uff0c\u7f51\u7edc\u53d8\u5f97\u65e0\u6cd5\u8fde\u63a5\uff0c\u4ece\u800c\u5bfc\u81f4\u4e1a\u52a1\u7cfb\u7edf\u4e5f\u65e0\u6cd5\u6b63\u5e38\u8fd0\u8f6c\u3002\u5b89\u5168\u7ec4\u5f88\u5feb\u5c4f\u853d\u4e86\u6240\u6709\u7684DDos\u653b\u51fb\uff0c\u5e76\u6062\u590d\u4e86\u7f51\u7edc\uff0c\u4f46\u4e1a\u52a1\u7cfb\u7edf\u5374\u8fd8\u662f\u65e0\u6cd5\u5de5\u4f5c\u3002\u00a0<br \/>\n\u901a\u8fc7\u5206\u6790\u7cfb\u7edf\u7684thread dump\u53d1\u73b0\uff0c\u4e1a\u52a1\u7cfb\u7edf\u505c\u5728\u4e86JDBC API\u7684\u8c03\u7528\u4e0a\u300220\u5206\u949f\u540e\uff0c\u7cfb\u7edf\u4ecd\u5904\u4e8eWAITING\u72b6\u6001\uff0c\u65e0\u6cd5\u54cd\u5e94\u300230\u5206\u949f\u540e\uff0c\u7cfb\u7edf\u629b\u51fa\u5f02\u5e38\uff0c\u670d\u52a1\u6062\u590d\u6b63\u5e38\u3002\u00a0<\/p>\n<p>\u4e3a\u4ec0\u4e48\u6211\u4eec\u660e\u660e\u5c06query timeout\u8bbe\u7f6e\u6210\u4e863\u79d2\uff0c\u7cfb\u7edf\u5374\u6301\u7eed\u4e8630\u5206\u949f\u7684WAITING\u72b6\u6001\uff1f\u4e3a\u4ec0\u4e4830\u5206\u949f\u540e\u7cfb\u7edf\u53c8\u6062\u590d\u6b63\u5e38\u4e86\uff1f\u00a0<br \/>\n\u5f53\u4f60\u5bf9\u7406\u89e3\u4e86JDBC\u7684\u8d85\u65f6\u8bbe\u7f6e\u540e\uff0c\u5c31\u80fd\u627e\u5230\u95ee\u9898\u7684\u7b54\u6848\u3002\u00a0<\/p>\n<p>\u4e3a\u4ec0\u4e48\u6211\u4eec\u8981\u4e86\u89e3JDBC\uff1f<br \/>\n\u00a0<\/p>\n<p>\u5f53\u9047\u5230\u6027\u80fd\u95ee\u9898\u6216\u7cfb\u7edf\u51fa\u9519\u65f6\uff0c\u4e1a\u52a1\u7cfb\u7edf\u548c\u6570\u636e\u5e93\u901a\u5e38\u662f\u6211\u4eec\u6700\u5173\u5fc3\u7684\u4e24\u4e2a\u90e8\u5206\u3002\u5728\u516c\u53f8\u91cc\uff0c\u8fd9\u4e24\u4e2a\u90e8\u5206\u662f\u4ea4\u7531\u4e24\u4e2a\u4e0d\u540c\u7684\u90e8\u95e8\u6765\u8d1f\u8d23\u7684\uff0c\u56e0\u6b64\u5404\u4e2a\u90e8\u95e8\u90fd\u4f1a\u96c6\u4e2d\u7cbe\u529b\u5730\u5728\u81ea\u8eab\u9886\u57df\u5185\u5bfb\u627e\u95ee\u9898\uff0c\u8fd9\u6837\u7684\u8bdd\uff0c\u5728\u4e1a\u52a1\u7cfb\u7edf\u548c\u6570\u636e\u5e93\u4e4b\u95f4\u7684\u90e8\u5206\u5c31\u4f1a\u6210\u4e3a\u4e00\u4e2a\u76f2\u533a\u3002\u5bf9\u4e8eJava\u5e94\u7528\u800c\u8a00\uff0c\u8fd9\u4e2a\u76f2\u533a\u5c31\u662fDBCP\u6570\u636e\u5e93\u8fde\u63a5\u6c60\u548cJDBC\uff0c\u672c\u6587\u5c06\u96c6\u4e2d\u4ecb\u7ecdJDBC\u3002\u00a0<\/p>\n<p>\u4ec0\u4e48\u662fJDBC\uff1f<br \/>\n\u00a0<\/p>\n<p>JDBC\u662fJava\u5e94\u7528\u4e2d\u7528\u6765\u8fde\u63a5\u5173\u7cfb\u578b\u6570\u636e\u5e93\u7684\u6807\u51c6API\u3002Sun\u516c\u53f8\u4e00\u5171\u5b9a\u4e49\u4e864\u79cd\u7c7b\u578b\u7684JDBC<br \/>\n\uff0c\u6211\u4eec\u4e3b\u8981\u4f7f\u7528\u7684\u662f\u7b2c4\u79cd\uff0c\u8be5\u7c7b\u578b\u7684Driver\u5b8c\u5168\u7531Java\u4ee3\u7801\u5b9e\u73b0\uff0c\u901a\u8fc7\u4f7f\u7528socket\u4e0e\u6570\u636e\u5e93\u8fdb\u884c\u901a\u4fe1\u3002\u00a0<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/aqzt.com\/wp-content\/uploads\/20220222091156-5.jpg\" alt=\"\" \/><\/p>\n<p>\u00a0<\/p>\n<p>\u56fe1 JDBC Type 4.<\/p>\n<p>\u7b2c4\u79cd\u7c7b\u578b\u7684JDBC\u901a\u8fc7socket\u5bf9\u5b57\u8282\u6d41\u8fdb\u884c\u5904\u7406\uff0c\u56e0\u6b64\u4e5f\u4f1a\u6709\u4e00\u4e9b\u57fa\u672c\u7f51\u7edc\u64cd\u4f5c\uff0c\u7c7b\u4f3c\u4e8eHttpClient\u8fd9\u79cd\u7528\u4e8e\u7f51\u7edc\u64cd\u4f5c\u7684\u4ee3\u7801\u5e93\u3002\u5f53\u5728\u7f51\u7edc\u64cd\u4f5c\u4e2d\u9047\u5230\u95ee\u9898\u7684\u65f6\u5019\uff0c\u5c06\u4f1a\u6d88\u8017\u5927\u91cf\u7684cpu\u8d44\u6e90\uff0c\u5e76\u4e14\u5931\u53bb\u54cd\u5e94\u8d85\u65f6\u3002\u5982\u679c\u4f60\u4e4b\u524d\u7528\u8fc7HttpClient\uff0c\u90a3\u4e48\u4f60\u4e00\u5b9a\u9047\u5230\u8fc7\u672a\u8bbe\u7f6etimeout\u9020\u6210\u7684\u9519\u8bef\u3002\u540c\u6837\uff0c\u7b2c4\u79cd\u7c7b\u578b\u7684JDBC\uff0c\u82e5\u6ca1\u6709\u5408\u7406\u5730\u8bbe\u7f6esocket timeout\uff0c\u4e5f\u4f1a\u6709\u76f8\u540c\u7684\u9519\u8bef\u2014\u2014\u8fde\u63a5\u88ab\u963b\u585e\u3002\u00a0<\/p>\n<p>\u63a5\u4e0b\u6765\uff0c\u5c31\u8ba9\u6211\u4eec\u6765\u5b66\u4e60\u4e00\u4e0b\u5982\u4f55\u6b63\u786e\u5730\u8bbe\u7f6esocket timeout\uff0c\u4ee5\u53ca\u9700\u8981\u8003\u8651\u7684\u95ee\u9898\u3002\u00a0<\/p>\n<p>\u5e94\u7528\u4e0e\u6570\u636e\u5e93\u95f4\u7684timeout\u5c42\u7ea7\u00a0<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/aqzt.com\/wp-content\/uploads\/20220222091156-5.jpg\" alt=\"\" \/><\/p>\n<p>\u00a0<\/p>\n<p>\u56fe2 Timeout Class.<\/p>\n<p>\u4e0a\u56fe\u5c55\u793a\u4e86\u7b80\u5316\u540e\u5e94\u7528\u4e0e\u6570\u636e\u5e93\u95f4\u7684timeout\u5c42\u7ea7\u3002\uff08\u8bd1\u8005\u6ce8\uff1aWAS\/BLOC\u662f\u4f5c\u8005\u516c\u53f8\u7684\u5177\u4f53\u5e94\u7528\u540d\u79f0\uff0c\u65e0\u9700\u6df1\u7a76\uff09\u00a0<\/p>\n<p>\u9ad8\u7ea7\u522b\u7684timeout\u4f9d\u8d56\u4e8e\u4f4e\u7ea7\u522b\u7684timeout\uff0c\u53ea\u6709\u5f53\u4f4e\u7ea7\u522b\u7684timeout\u65e0\u8bef\u65f6\uff0c\u9ad8\u7ea7\u522b\u7684timeout\u624d\u80fd\u786e\u4fdd\u6b63\u5e38\u3002\u4f8b\u5982\uff0c\u5f53socket timeout\u51fa\u73b0\u95ee\u9898\u65f6\uff0c\u9ad8\u7ea7\u522b\u7684statement timeout\u548ctransaction timeout\u90fd\u5c06\u5931\u6548\u3002\u00a0<\/p>\n<p>\u6211\u4eec\u6536\u5230\u7684\u5f88\u591a\u8bc4\u8bba\u4e2d\u63d0\u5230\uff1a\u00a0<\/p>\n<p>\u5f15\u7528<\/p>\n<p>\u5373\u4f7f\u8bbe\u7f6e\u4e86statement timeout\uff0c\u5f53\u7f51\u7edc\u51fa\u9519\u65f6\uff0c\u5e94\u7528\u4e5f\u65e0\u6cd5\u4ece\u9519\u8bef\u4e2d\u6062\u590d\u3002<\/p>\n<p>statement timeout\u65e0\u6cd5\u5904\u7406\u7f51\u7edc\u8fde\u63a5\u5931\u8d25\u65f6\u7684\u8d85\u65f6\uff0c\u5b83\u80fd\u505a\u7684\u4ec5\u4ec5\u662f\u9650\u5236statement\u7684\u64cd\u4f5c\u65f6\u95f4\u3002\u7f51\u7edc\u8fde\u63a5\u5931\u8d25\u65f6\u7684timeout\u5fc5\u987b\u4ea4\u7531JDBC\u6765\u5904\u7406\u3002\u00a0<\/p>\n<p>JDBC\u7684socket timeout\u4f1a\u53d7\u5230\u64cd\u4f5c\u7cfb\u7edfsocket timeout\u8bbe\u7f6e\u7684\u5f71\u54cd\uff0c\u8fd9\u5c31\u89e3\u91ca\u4e86\u4e3a\u4ec0\u4e48\u5728\u4e4b\u524d\u7684\u6848\u4f8b\u4e2d\uff0cJDBC\u8fde\u63a5\u4f1a\u5728\u7f51\u7edc\u51fa\u9519\u540e\u963b\u585e30\u5206\u949f\uff0c\u7136\u540e\u53c8\u5947\u8ff9\u822c\u6062\u590d\uff0c\u5373\u4f7f\u6211\u4eec\u5e76\u6ca1\u6709\u5bf9JDBC\u7684socket timeout\u8fdb\u884c\u8bbe\u7f6e\u3002\u00a0<\/p>\n<p>DBCP\u8fde\u63a5\u6c60\u4f4d\u4e8e\u56fe2\u7684\u5de6\u4fa7\uff0c\u4f60\u4f1a\u53d1\u73b0timeout\u5c42\u7ea7\u4e0eDBCP\u662f\u76f8\u4e92\u72ec\u7acb\u7684\u3002DBCP\u8d1f\u8d23\u7684\u662f\u6570\u636e\u5e93\u8fde\u63a5\u7684\u521b\u5efa\u548c\u7ba1\u7406\uff0c\u5e76\u4e0d\u5e72\u6d89timeout\u7684\u5904\u7406\u3002\u5f53\u8fde\u63a5\u5728DBCP\u4e2d\u521b\u5efa\uff0c\u6216\u662fDBCP\u53d1\u9001\u6821\u9a8cquery\u68c0\u67e5\u8fde\u63a5\u6709\u6548\u6027\u7684\u65f6\u5019\uff0csocket timeout\u5c06\u4f1a\u5f71\u54cd\u8fd9\u4e9b\u8fc7\u7a0b\uff0c\u4f46\u5e76\u4e0d\u76f4\u63a5\u5bf9\u5e94\u7528\u9020\u6210\u5f71\u54cd\u3002\u00a0<\/p>\n<p>\u5f53\u5728\u5e94\u7528\u4e2d\u8c03\u7528DBCP\u7684getConnection()\u65b9\u6cd5\u65f6\uff0c\u4f60\u53ef\u4ee5\u8bbe\u7f6e\u83b7\u53d6\u6570\u636e\u5e93\u8fde\u63a5\u7684\u8d85\u65f6\u65f6\u95f4\uff0c\u4f46\u662f\u8fd9\u548cJDBC\u7684timeout\u6beb\u4e0d\u76f8\u5173\u3002\u00a0<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/aqzt.com\/wp-content\/uploads\/20220222091156-5.jpg\" alt=\"\" \/><\/p>\n<p>\u00a0<\/p>\n<p>\u56fe3 Timeout for Each Levels.<\/p>\n<p>\u4ec0\u4e48\u662fTransaction Timeout\uff1f<br \/>\n\u00a0<\/p>\n<p>transaction timeout\u4e00\u822c\u5b58\u5728\u4e8e\u6846\u67b6\uff08Spring, EJB\uff09\u6216\u5e94\u7528\u7ea7\u3002transaction timeout\u6216\u8bb8\u662f\u4e2a\u76f8\u5bf9\u964c\u751f\u7684\u6982\u5ff5\uff0c\u7b80\u5355\u5730\u8bf4\uff0ctransaction timeout\u5c31\u662f\u201cstatement Timeout * N\uff08\u9700\u8981\u6267\u884c\u7684statement\u6570\u91cf\uff09 + @\uff08\u5783\u573e\u56de\u6536\u7b49\u5176\u4ed6\u65f6\u95f4\uff09\u201d\u3002transaction timeout\u7528\u6765\u9650\u5236\u6267\u884cstatement\u7684\u603b\u65f6\u957f\u3002\u00a0<\/p>\n<p>\u4f8b\u5982\uff0c\u5047\u8bbe\u6267\u884c\u4e00\u4e2astatement\u9700\u89810.1\u79d2\uff0c\u90a3\u4e48\u6267\u884c\u5c11\u91cfstatement\u4e0d\u4f1a\u6709\u4ec0\u4e48\u95ee\u9898\uff0c\u4f46\u82e5\u662f\u8981\u6267\u884c100,000\u4e2astatement\u5219\u9700\u898110,000\u79d2\uff08\u7ea67\u4e2a\u5c0f\u65f6\uff09\u3002\u8fd9\u65f6\uff0ctransaction timeout\u5c31\u6d3e\u4e0a\u7528\u573a\u4e86\u3002EJB CMT (Container Managed Transaction)\u5c31\u662f\u4e00\u79cd\u5178\u578b\u7684\u5b9e\u73b0\uff0c\u5b83\u63d0\u4f9b\u4e86\u591a\u79cd\u65b9\u6cd5\u4f9b\u5f00\u53d1\u8005\u9009\u62e9\u3002\u4f46\u6211\u4eec\u5e76\u4e0d\u4f7f\u7528EJB\uff0cSpring\u7684transaction timeout\u8bbe\u7f6e\u4f1a\u66f4\u5e38\u7528\u4e00\u4e9b\u3002\u5728Spring\u4e2d\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528\u4e0b\u9762\u5c55\u793a\u7684XML\u6216\u662f\u5728\u6e90\u7801\u4e2d\u4f7f\u7528@Transactional\u6ce8\u89e3\u6765\u8fdb\u884c\u8bbe\u7f6e\u3002\u00a0<\/p>\n<p>Xml\u4ee3\u7801<\/p>\n<ol>\n<li>&lt;<\/li>\n<\/ol>\n<p>tx:attributes<\/p>\n<blockquote>\n<p>\u00a0\u00a0<\/p>\n<\/blockquote>\n<ol>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/li>\n<\/ol>\n<p>&lt;<br \/>\ntx:method\u00a0<br \/>\nname=<br \/>\n\u201c\u2026\u201d\u00a0<br \/>\ntimeout=<br \/>\n\u201c3\u2033<br \/>\n\/&gt;\u00a0\u00a0<\/p>\n<ol>\n<li>&lt;\/<\/li>\n<\/ol>\n<p>tx:attributes<\/p>\n<blockquote>\n<p>\u00a0\u00a0<\/p>\n<\/blockquote>\n<p>Spring\u63d0\u4f9b\u7684transaction timeout\u914d\u7f6e\u975e\u5e38\u7b80\u5355\uff0c\u5b83\u4f1a\u8bb0\u5f55\u6bcf\u4e2a\u4e8b\u52a1\u7684\u5f00\u59cb\u65f6\u95f4\u548c\u6d88\u8017\u65f6\u95f4\uff0c\u5f53\u7279\u5b9a\u7684\u4e8b\u4ef6\u53d1\u751f\u65f6\u5c31\u4f1a\u5bf9\u6d88\u8017\u65f6\u95f4\u505a\u6821\u9a8c\uff0c\u5f53\u8d85\u51fatimeout\u503c\u65f6\u5c06\u629b\u51fa\u5f02\u5e38\u3002\u00a0<\/p>\n<p>Spring\u4e2d\uff0c\u6570\u636e\u5e93\u8fde\u63a5\u88ab\u4fdd\u5b58\u5728ThreadLocal\u91cc\uff0c\u8fd9\u88ab\u79f0\u4e3a\u4e8b\u52a1\u540c\u6b65\uff08Transaction Synchronization\uff09\uff0c\u4e0e\u6b64\u540c\u65f6\uff0c\u4e8b\u52a1\u7684\u5f00\u59cb\u65f6\u95f4\u548c\u6d88\u8017\u65f6\u95f4\u4e5f\u88ab\u4fdd\u5b58\u4e0b\u6765\u3002\u5f53\u4f7f\u7528\u8fd9\u79cd\u4ee3\u7406\u8fde\u63a5\u521b\u5efastatement\u65f6\uff0c\u5c31\u4f1a\u6821\u9a8c\u4e8b\u52a1\u7684\u6d88\u8017\u65f6\u95f4\u3002EJB CMT\u7684\u5b9e\u73b0\u65b9\u5f0f\u4e0e\u4e4b\u7c7b\u4f3c\uff0c\u5176\u7ed3\u6784\u672c\u8eab\u4e5f\u5341\u5206\u7b80\u5355\u3002\u00a0<\/p>\n<p>\u5f53\u4f60\u9009\u7528\u7684\u5bb9\u5668\u6216\u6846\u67b6\u5e76\u4e0d\u652f\u6301transaction timeout\u8fd9\u4e00\u7279\u6027\uff0c\u4f60\u53ef\u4ee5\u8003\u8651\u81ea\u5df1\u6765\u5b9e\u73b0\u3002transaction timeout\u5e76\u6ca1\u6709\u6807\u51c6\u7684API\u3002Lucy\u6846\u67b6\u76841.5\u548c1.6\u7248\u672c\u90fd\u4e0d\u652f\u6301transaction timeout\uff0c\u4f46\u662f\u4f60\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528Spring\u7684Transaction Manager\u6765\u8fbe\u5230\u4e0e\u4e4b\u540c\u6837\u7684\u6548\u679c\u3002\u00a0<\/p>\n<p>\u5047\u8bbe\u67d0\u4e2a\u4e8b\u52a1\u4e2d\u5305\u542b5\u4e2astatement\uff0c\u6bcf\u4e2astatement\u7684\u6267\u884c\u65f6\u95f4\u662f200ms\uff0c\u5176\u4ed6\u4e1a\u52a1\u903b\u8f91\u7684\u6267\u884c\u65f6\u95f4\u662f100ms\uff0c\u90a3\u4e48transaction timeout\u81f3\u5c11\u5e94\u8be5\u8bbe\u7f6e\u4e3a1,100ms\uff08200 * 5 + 100\uff09\u3002\u00a0<\/p>\n<p>\u4ec0\u4e48\u662fStatement Timeout\uff1f<br \/>\n\u00a0<\/p>\n<p>statement timeout\u7528\u6765\u9650\u5236statement\u7684\u6267\u884c\u65f6\u957f\uff0ctimeout\u7684\u503c\u901a\u8fc7\u8c03\u7528JDBC\u7684java.sql.Statement.setQueryTimeout(int timeout) API\u8fdb\u884c\u8bbe\u7f6e\u3002\u4e0d\u8fc7\u73b0\u5728\u5f00\u53d1\u8005\u5df2\u7ecf\u5f88\u5c11\u76f4\u63a5\u5728\u4ee3\u7801\u4e2d\u8bbe\u7f6e\uff0c\u800c\u591a\u662f\u901a\u8fc7\u6846\u67b6\u6765\u8fdb\u884c\u8bbe\u7f6e\u3002\u00a0<\/p>\n<p>\u4ee5iBatis\u4e3a\u4f8b\uff0cstatement timeout\u7684\u9ed8\u8ba4\u503c\u53ef\u4ee5\u901a\u8fc7sql-map-config.xml\u4e2d\u7684defaultStatementTimeout \u5c5e\u6027\u8fdb\u884c\u8bbe\u7f6e\u3002\u540c\u65f6\uff0c\u4f60\u8fd8\u53ef\u4ee5\u8bbe\u7f6esqlmap\u4e2dselect\uff0cinsert\uff0cupdate\u6807\u7b7e\u7684timeout\u5c5e\u6027\uff0c\u4ece\u800c\u5bf9\u4e0d\u540csql\u8bed\u53e5\u7684\u8d85\u65f6\u65f6\u95f4\u8fdb\u884c\u72ec\u7acb\u7684\u914d\u7f6e\u3002\u00a0<\/p>\n<p>\u5982\u679c\u4f60\u4f7f\u7528\u7684\u662fLucy1.5\u62161.6\u7248\u672c\uff0c\u901a\u8fc7\u8bbe\u7f6equeryTimeout\u5c5e\u6027\u53ef\u4ee5\u5728datasource\u5c42\u9762\u5bf9statement timeout\u8fdb\u884c\u8bbe\u7f6e\u3002\u00a0<\/p>\n<p>statement timeout\u7684\u5177\u4f53\u503c\u9700\u8981\u4f9d\u636e\u5e94\u7528\u672c\u8eab\u7684\u7279\u6027\u800c\u5b9a\uff0c\u5e76\u6ca1\u6709\u53ef\u4f9b\u63a8\u8350\u7684\u914d\u7f6e\u3002\u00a0<\/p>\n<p>JDBC\u7684statement timeout\u5904\u7406\u8fc7\u7a0b<br \/>\n\u00a0<\/p>\n<p>\u4e0d\u540c\u7684\u5173\u7cfb\u578b\u6570\u636e\u5e93\uff0c\u4ee5\u53ca\u4e0d\u540c\u7684JDBC\u9a71\u52a8\uff0c\u5176statement timeout\u5904\u7406\u8fc7\u7a0b\u4f1a\u6709\u6240\u4e0d\u540c\u3002\u5176\u4e2d\uff0cOracle\u548cMS SQLServer\u7684\u5904\u7406\u76f8\u7c7b\u4f3c\uff0cMySQL\u548cCUBRID<br \/>\n\u7c7b\u4f3c\u3002\u00a0<\/p>\n<p>Oracle JDBC Statement\u7684QueryTimeout\u5904\u7406\u8fc7\u7a0b<br \/>\n\u00a0<\/p>\n<ol>\n<li>\n<p>\u901a\u8fc7\u8c03\u7528Connection\u7684createStatement()\u65b9\u6cd5\u521b\u5efastatement\u00a0<\/p>\n<\/li>\n<li>\n<p>\u8c03\u7528Statement\u7684executeQuery()\u65b9\u6cd5\u00a0<\/p>\n<\/li>\n<li>\n<p>statement\u901a\u8fc7\u81ea\u8eabconnection\u5c06query\u53d1\u9001\u7ed9Oracle\u6570\u636e\u5e93\u00a0<\/p>\n<\/li>\n<li>\n<p>statement\u5728OracleTimeoutPollingThread\uff08\u6bcf\u4e2aclassloader\u4e00\u4e2a\uff09\u4e0a\u8fdb\u884c\u6ce8\u518c\u00a0<\/p>\n<\/li>\n<li>\n<p>\u8fbe\u5230\u8d85\u65f6\u65f6\u95f4\u00a0<\/p>\n<\/li>\n<li>\n<p>OracleTimeoutPollingThread\u8c03\u7528OracleStatement\u7684cancel()\u65b9\u6cd5\u00a0<\/p>\n<\/li>\n<li>\n<p>\u901a\u8fc7connection\u5411\u6b63\u5728\u6267\u884c\u7684query\u53d1\u9001cancel\u6d88\u606f\u00a0<\/p>\n<\/li>\n<\/ol>\n<p><img decoding=\"async\" src=\"https:\/\/aqzt.com\/wp-content\/uploads\/20220222091156-5.jpg\" alt=\"\" \/><\/p>\n<p>\u00a0<\/p>\n<p>\u56fe4 Query Timeout Execution Process for Oracle JDBC Statement.<\/p>\n<p>JTDS (MS SQLServer) Statement\u7684QueryTimeout\u5904\u7406\u8fc7\u7a0b<br \/>\n\u00a0<\/p>\n<ol>\n<li>\n<p>\u901a\u8fc7\u8c03\u7528Connection\u7684createStatement()\u65b9\u6cd5\u521b\u5efastatement\u00a0<\/p>\n<\/li>\n<li>\n<p>\u8c03\u7528Statement\u7684executeQuery()\u65b9\u6cd5\u00a0<\/p>\n<\/li>\n<li>\n<p>statement\u901a\u8fc7\u81ea\u8eabconnection\u5c06query\u53d1\u9001\u7ed9MS SqlServer\u6570\u636e\u5e93\u00a0<\/p>\n<\/li>\n<li>\n<p>statement\u5728TimerThread\u4e0a\u8fdb\u884c\u6ce8\u518c\u00a0<\/p>\n<\/li>\n<li>\n<p>\u8fbe\u5230\u8d85\u65f6\u65f6\u95f4\u00a0<\/p>\n<\/li>\n<li>\n<p>TimerThread\u8c03\u7528JtdsStatement\u5b9e\u4f8b\u4e2d\u7684TsdCore.cancel()\u65b9\u6cd5\u00a0<\/p>\n<\/li>\n<li>\n<p>\u901a\u8fc7ConnectionJDBC\u5411\u6b63\u5728\u6267\u884c\u7684query\u53d1\u9001cancel\u6d88\u606f\u00a0<\/p>\n<\/li>\n<\/ol>\n<p><img decoding=\"async\" src=\"https:\/\/aqzt.com\/wp-content\/uploads\/20220222091156-5.jpg\" alt=\"\" \/><\/p>\n<p>\u00a0<\/p>\n<p>\u56fe5 QueryTimeout Execution Process for JTDS (MS SQLServer) Statement.<\/p>\n<p>MySQL JDBC Statement\u7684QueryTimeout\u5904\u7406\u8fc7\u7a0b<br \/>\n\u00a0<\/p>\n<ol>\n<li>\n<p>\u901a\u8fc7\u8c03\u7528Connection\u7684createStatement()\u65b9\u6cd5\u521b\u5efastatement\u00a0<\/p>\n<\/li>\n<li>\n<p>\u8c03\u7528Statement\u7684executeQuery()\u65b9\u6cd5\u00a0<\/p>\n<\/li>\n<li>\n<p>statement\u901a\u8fc7\u81ea\u8eabconnection\u5c06query\u53d1\u9001\u7ed9MySQL\u6570\u636e\u5e93\u00a0<\/p>\n<\/li>\n<li>\n<p>statement\u521b\u5efa\u4e00\u4e2a\u65b0\u7684timeout-execution\u7ebf\u7a0b\u7528\u4e8e\u8d85\u65f6\u5904\u7406\u00a0<\/p>\n<\/li>\n<li>\n<p>5.1\u7248\u672c\u540e\u6539\u4e3a\u6bcf\u4e2aconnection\u5206\u914d\u4e00\u4e2atimeout-execution\u7ebf\u7a0b\u00a0<\/p>\n<\/li>\n<li>\n<p>\u5411timeout-execution\u7ebf\u7a0b\u8fdb\u884c\u6ce8\u518c\u00a0<\/p>\n<\/li>\n<li>\n<p>\u8fbe\u5230\u8d85\u65f6\u65f6\u95f4\u00a0<\/p>\n<\/li>\n<li>\n<p>TimerThread\u8c03\u7528JtdsStatement\u5b9e\u4f8b\u4e2d\u7684TsdCore.cancel()\u65b9\u6cd5\u00a0<\/p>\n<\/li>\n<li>\n<p>timeout-execution\u7ebf\u7a0b\u521b\u5efa\u4e00\u4e2a\u548cstatement\u914d\u7f6e\u76f8\u540c\u7684connection\u00a0<\/p>\n<\/li>\n<li>\n<p>\u4f7f\u7528\u65b0\u521b\u5efa\u7684connection\u5411\u8d85\u65f6query\u53d1\u9001cancel query\uff08KILL QUERY \u201cconnectionId\u201d\uff09\u00a0<\/p>\n<\/li>\n<\/ol>\n<p><img decoding=\"async\" src=\"https:\/\/aqzt.com\/wp-content\/uploads\/20220222091156-5.jpg\" alt=\"\" \/><\/p>\n<p>\u00a0<\/p>\n<p>\u56fe6 QueryTimeout Execution Process for MySQL JDBC Statement (5.0.8).<\/p>\n<p>CUBRID JDBC Statement\u7684QueryTimeout\u5904\u7406\u8fc7\u7a0b<br \/>\n\u00a0<\/p>\n<ol>\n<li>\n<p>\u901a\u8fc7\u8c03\u7528Connection\u7684createStatement()\u65b9\u6cd5\u521b\u5efastatement\u00a0<\/p>\n<\/li>\n<li>\n<p>\u8c03\u7528Statement\u7684executeQuery()\u65b9\u6cd5\u00a0<\/p>\n<\/li>\n<li>\n<p>statement\u901a\u8fc7\u81ea\u8eabconnection\u5c06query\u53d1\u9001\u7ed9CUBRID\u6570\u636e\u5e93\u00a0<\/p>\n<\/li>\n<li>\n<p>statement\u521b\u5efa\u4e00\u4e2a\u65b0\u7684timeout-execution\u7ebf\u7a0b\u7528\u4e8e\u8d85\u65f6\u5904\u7406\u00a0<\/p>\n<\/li>\n<li>\n<p>5.1\u7248\u672c\u540e\u6539\u4e3a\u6bcf\u4e2aconnection\u5206\u914d\u4e00\u4e2atimeout-execution\u7ebf\u7a0b\u00a0<\/p>\n<\/li>\n<li>\n<p>\u5411timeout-execution\u7ebf\u7a0b\u8fdb\u884c\u6ce8\u518c\u00a0<\/p>\n<\/li>\n<li>\n<p>\u8fbe\u5230\u8d85\u65f6\u65f6\u95f4\u00a0<\/p>\n<\/li>\n<li>\n<p>TimerThread\u8c03\u7528JtdsStatement\u5b9e\u4f8b\u4e2d\u7684TsdCore.cancel()\u65b9\u6cd5\u00a0<\/p>\n<\/li>\n<li>\n<p>timeout-execution\u7ebf\u7a0b\u521b\u5efa\u4e00\u4e2a\u548cstatement\u914d\u7f6e\u76f8\u540c\u7684connection\u00a0<\/p>\n<\/li>\n<li>\n<p>\u4f7f\u7528\u65b0\u521b\u5efa\u7684connection\u5411\u8d85\u65f6query\u53d1\u9001cancel\u6d88\u606f\u00a0<\/p>\n<\/li>\n<\/ol>\n<p><img decoding=\"async\" src=\"https:\/\/aqzt.com\/wp-content\/uploads\/20220222091156-5.jpg\" alt=\"\" \/><\/p>\n<p>\u00a0<\/p>\n<p>\u56fe7 QueryTimeout Execution Process for CUBRID JDBC Statement.<\/p>\n<p>\u4ec0\u4e48\u662fJDBC\u7684socket timeout\uff1f<br \/>\n\u00a0<\/p>\n<p>\u7b2c4\u79cd\u7c7b\u578b\u7684JDBC\u4f7f\u7528socket\u4e0e\u6570\u636e\u5e93\u8fde\u63a5\uff0c\u6570\u636e\u5e93\u5e76\u4e0d\u5bf9\u5e94\u7528\u4e0e\u6570\u636e\u5e93\u95f4\u7684\u8fde\u63a5\u8d85\u65f6\u8fdb\u884c\u5904\u7406\u3002\u00a0<\/p>\n<p>JDBC\u7684socket timeout\u5728\u6570\u636e\u5e93\u88ab\u7a81\u7136\u505c\u6389\u6216\u662f\u53d1\u751f\u7f51\u7edc\u9519\u8bef\uff08\u7531\u4e8e\u8bbe\u5907\u6545\u969c\u7b49\u539f\u56e0\uff09\u65f6\u5341\u5206\u91cd\u8981\u3002\u7531\u4e8eTCP\/IP\u7684\u7ed3\u6784\u539f\u56e0\uff0csocket\u6ca1\u6709\u529e\u6cd5\u63a2\u6d4b\u5230\u7f51\u7edc\u9519\u8bef\uff0c\u56e0\u6b64\u5e94\u7528\u4e5f\u65e0\u6cd5\u4e3b\u52a8\u53d1\u73b0\u6570\u636e\u5e93\u8fde\u63a5\u65ad\u5f00\u3002\u5982\u679c\u6ca1\u6709\u8bbe\u7f6esocket timeout\u7684\u8bdd\uff0c\u5e94\u7528\u5728\u6570\u636e\u5e93\u8fd4\u56de\u7ed3\u679c\u524d\u4f1a\u65e0\u671f\u9650\u5730\u7b49\u4e0b\u53bb\uff0c\u8fd9\u79cd\u8fde\u63a5\u88ab\u79f0\u4e3adead connection\u3002\u00a0<\/p>\n<p>\u4e3a\u4e86\u907f\u514ddead connections\uff0csocket\u5fc5\u987b\u8981\u6709\u8d85\u65f6\u914d\u7f6e\u3002socket timeout\u53ef\u4ee5\u901a\u8fc7JDBC\u8bbe\u7f6e\uff0csocket timeout\u80fd\u591f\u907f\u514d\u5e94\u7528\u5728\u53d1\u751f\u7f51\u7edc\u9519\u8bef\u65f6\u4ea7\u751f\u65e0\u4f11\u6b62\u7b49\u5f85\u7684\u60c5\u51b5\uff0c\u7f29\u77ed\u670d\u52a1\u5931\u6548\u7684\u65f6\u95f4\u3002\u00a0<\/p>\n<p>\u4e0d\u63a8\u8350\u4f7f\u7528socket timeout\u6765\u9650\u5236statement\u7684\u6267\u884c\u65f6\u957f\uff0c\u56e0\u6b64socket timeout\u7684\u503c\u5fc5\u987b\u8981\u9ad8\u4e8estatement timeout\uff0c\u5426\u5219\uff0csocket timeout\u5c06\u4f1a\u5148\u751f\u6548\uff0c\u8fd9\u6837statement timeout\u5c31\u53d8\u5f97\u6beb\u65e0\u610f\u4e49\uff0c\u4e5f\u65e0\u6cd5\u751f\u6548\u3002\u00a0<\/p>\n<p>\u4e0b\u9762\u5c55\u793a\u4e86socket timeout\u7684\u4e24\u4e2a\u8bbe\u7f6e\u9879\uff0c\u4e0d\u540c\u7684JDBC\u9a71\u52a8\u5176\u914d\u7f6e\u65b9\u5f0f\u4f1a\u6709\u6240\u4e0d\u540c\u3002\u00a0<\/p>\n<ul>\n<li>socket\u8fde\u63a5\u65f6\u7684timeout\uff1a\u901a\u8fc7Socket.connect(SocketAddress endpoint, int timeout)\u8bbe\u7f6e<\/li>\n<li>socket\u8bfb\u5199\u65f6\u7684timeout\uff1a\u901a\u8fc7Socket.setSoTimeout(int timeout)\u8bbe\u7f6e<\/li>\n<\/ul>\n<p>\u901a\u8fc7\u67e5\u770bCUBRID\uff0cMySQL\uff0cMS SQL Server (JTDS)\u548cOracle\u7684JDBC\u9a71\u52a8\u6e90\u7801\uff0c\u6211\u4eec\u53d1\u73b0\u6240\u6709\u7684\u9a71\u52a8\u5185\u90e8\u90fd\u662f\u4f7f\u7528\u4e0a\u9762\u76842\u4e2aAPI\u6765\u8bbe\u7f6esocket timeout\u7684\u3002\u00a0<\/p>\n<p>\u4e0b\u9762\u662f\u4e0d\u540c\u9a71\u52a8\u7684socket timeout\u914d\u7f6e\u65b9\u5f0f\u3002\u00a0<\/p>\n<table>\n<thead>\n<tr>\n<th><\/th>\n<th><\/th>\n<th><\/th>\n<th><\/th>\n<th><\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>JDBC Driver<\/td>\n<td>connectTimeout\u914d\u7f6e\u9879<\/td>\n<td>socketTimeout\u914d\u7f6e\u9879<\/td>\n<td>url\u683c\u5f0f<\/td>\n<td>\u793a\u4f8b<\/td>\n<\/tr>\n<tr>\n<td>MySQL Driver<\/td>\n<td>connectTimeout\uff08\u9ed8\u8ba4\u503c\uff1a0\uff0c\u5355\u4f4d\uff1ams\uff09<\/td>\n<td>socketTimeout\uff08\u9ed8\u8ba4\u503c\uff1a0\uff0c\u5355\u4f4d\uff1ams\uff09<\/td>\n<td>jdbc:mysql:\/\/[host:port],[host:port]\u2026\/[database][?propertyName1][=propertyValue1][&amp;propertyName2][=propertyValue2]\u2026<\/td>\n<td>jdbc:mysql:\/\/xxx.xx.xxx.xxx:3306\/database?connectTimeout=60000&amp;socketTimeout=60000<\/td>\n<\/tr>\n<tr>\n<td>MS-SQL DriverjTDS Driver<\/td>\n<td>loginTimeout\uff08\u9ed8\u8ba4\u503c\uff1a0\uff0c\u5355\u4f4d\uff1as\uff09<\/td>\n<td>socketTimeout\uff08\u9ed8\u8ba4\u503c\uff1a0\uff0c\u5355\u4f4d\uff1as\uff09<\/td>\n<td>jdbc:jtds:&lt;server_type&gt;:\/\/<!-- -->&lt;server&gt;<!-- -->[:<!-- -->&lt;port&gt;<!-- -->][\/<!-- -->&lt;database&gt;<!-- -->][;<!-- -->&lt;property&gt;<!-- -->=<!-- -->&lt;value&gt;<!-- -->[;&#8230;]]<\/td>\n<td>jdbc:jtds:sqlserver:\/\/server:port\/database;loginTimeout=60;socketTimeout=60<\/td>\n<\/tr>\n<tr>\n<td>Oracle Thin Driver<\/td>\n<td>oracle.net.CONNECT_TIMEOUT \uff08\u9ed8\u8ba4\u503c\uff1a0\uff0c\u5355\u4f4d\uff1ams\uff09<\/td>\n<td>oracle.jdbc.ReadTimeout\uff08\u9ed8\u8ba4\u503c\uff1a0\uff0c\u5355\u4f4d\uff1ams\uff09<\/td>\n<td>\u4e0d\u652f\u6301\u901a\u8fc7url\u914d\u7f6e\uff0c\u53ea\u80fd\u901a\u8fc7OracleDatasource.setConnectionProperties() API\u8bbe\u7f6e\uff0c\u4f7f\u7528DBCP\u65f6\u53ef\u4ee5\u8c03\u7528BasicDatasource.setConnectionProperties()\u6216BasicDatasource.addConnectionProperties()\u8fdb\u884c\u8bbe\u7f6e<\/td>\n<td>\u00a0<\/td>\n<\/tr>\n<tr>\n<td>CUBRID Thin Driver<\/td>\n<td>\u65e0\u72ec\u7acb\u914d\u7f6e\u9879\uff08\u9ed8\u8ba4\u503c\uff1a5,000\uff0c\u5355\u4f4d\uff1ams\uff09<\/td>\n<td>\u65e0\u72ec\u7acb\u914d\u7f6e\u9879\uff08\u9ed8\u8ba4\u503c\uff1a5,000\uff0c\u5355\u4f4d\uff1ams\uff09<\/td>\n<td>\u00a0<\/td>\n<td>\u00a0<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><div class=\"codecolorer-container text solarized-dark language-bash\" style=\"overflow:auto;white-space:nowrap;width:800px;\"><table cellspacing=\"0\" cellpadding=\"0\"><tbody><tr><td class=\"line-numbers\"><div>1<br \/><\/div><\/td><td><div class=\"text codecolorer\">1<\/div><\/td><\/tr><\/tbody><\/table><\/div>\n<\/p>\n<ul>\n<li>connectTimeout\u548csocketTimeout\u7684\u9ed8\u8ba4\u503c\u4e3a0\u65f6\uff0ctimeout\u4e0d\u751f\u6548\u3002<\/li>\n<li>\u9664\u4e86\u8c03\u7528DBCP\u7684API\u4ee5\u5916\uff0c\u8fd8\u53ef\u4ee5\u901a\u8fc7properties\u5c5e\u6027\u8fdb\u884c\u914d\u7f6e\u3002<\/li>\n<\/ul>\n<p>\u901a\u8fc7properties\u5c5e\u6027\u8fdb\u884c\u914d\u7f6e\u65f6\uff0c\u9700\u8981\u4f20\u5165key\u4e3a\u201cconnectionProperties\u201d\u7684\u952e\u503c\u5bf9\uff0cvalue\u7684\u683c\u5f0f\u4e3a\u201c[propertyName=property;]*\u201d\u3002\u4e0b\u9762\u662fiBatis\u4e2d\u7684properties\u914d\u7f6e\u3002\u00a0<\/p>\n<p>Xml\u4ee3\u7801<\/p>\n<ol>\n<li>&lt;<\/li>\n<\/ol>\n<p>transactionManager\u00a0<br \/>\ntype=<br \/>\n\u201cJDBC\u201d<\/p>\n<blockquote>\n<p>\u00a0\u00a0<\/p>\n<\/blockquote>\n<ol>\n<li>\u00a0\u00a0<\/li>\n<\/ol>\n<p>&lt;<br \/>\ndataSource\u00a0<br \/>\ntype=<br \/>\n\u201ccom.nhncorp.lucy.db.DbcpDSFactory\u201d<\/p>\n<blockquote>\n<p>\u00a0\u00a0<\/p>\n<\/blockquote>\n<ol>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0\u2026.\u00a0\u00a0<\/li>\n<li>\u00a0\u00a0\u00a0\u00a0\u00a0<\/li>\n<\/ol>\n<p>&lt;<br \/>\nproperty\u00a0<br \/>\nname=<br \/>\n\u201cconnectionProperties\u201d\u00a0<br \/>\nvalue=<br \/>\n\u201coracle.net.CONNECT_TIMEOUT=6000;oracle.jdbc.ReadTimeout=6000\u2033<br \/>\n\/&gt;\u00a0\u00a0\u00a0<\/p>\n<ol>\n<li>\u00a0\u00a0<\/li>\n<\/ol>\n<p>&lt;\/<br \/>\ndataSource<\/p>\n<blockquote>\n<p>\u00a0\u00a0<\/p>\n<\/blockquote>\n<ol>\n<li>&lt;\/<\/li>\n<\/ol>\n<p>transactionManager<\/p>\n<blockquote>\n<p>\u00a0\u00a0<\/p>\n<\/blockquote>\n<p>\u64cd\u4f5c\u7cfb\u7edf\u7684socket timeout\u914d\u7f6e<br \/>\n\u00a0<\/p>\n<p>\u5982\u679c\u4e0d\u8bbe\u7f6esocket timeout\u6216connect timeout\uff0c\u5e94\u7528\u591a\u6570\u60c5\u51b5\u4e0b\u662f\u65e0\u6cd5\u53d1\u73b0\u7f51\u7edc\u9519\u8bef\u7684\u3002\u56e0\u6b64\uff0c\u5f53\u7f51\u7edc\u9519\u8bef\u53d1\u751f\u540e\uff0c\u5728\u8fde\u63a5\u91cd\u65b0\u8fde\u63a5\u6210\u529f\u6216\u6210\u529f\u63a5\u6536\u5230\u6570\u636e\u4e4b\u524d\uff0c\u5e94\u7528\u4f1a\u65e0\u9650\u5236\u5730\u7b49\u4e0b\u53bb\u3002\u4f46\u662f\uff0c\u901a\u8fc7\u672c\u6587\u5f00\u7bc7\u5904\u7684\u5b9e\u9645\u6848\u4f8b\u6211\u4eec\u53d1\u73b0\uff0c30\u5206\u949f\u540e\u5e94\u7528\u7684\u8fde\u63a5\u95ee\u9898\u5947\u8ff9\u822c\u7684\u89e3\u51b3\u4e86\uff0c\u8fd9\u662f\u56e0\u4e3a\u64cd\u4f5c\u7cfb\u7edf\u540c\u6837\u80fd\u591f\u5bf9socket timeout\u8fdb\u884c\u914d\u7f6e\u3002\u516c\u53f8\u7684Linux\u670d\u52a1\u5668\u5c06socket timeout\u8bbe\u7f6e\u4e3a\u4e8630\u5206\u949f\uff0c\u4ece\u800c\u4f1a\u5728\u64cd\u4f5c\u7cfb\u7edf\u7684\u5c42\u9762\u5bf9\u7f51\u7edc\u8fde\u63a5\u505a\u6821\u9a8c\uff0c\u56e0\u6b64\u5373\u4f7fJDBC\u7684socket timeout\u8bbe\u7f6e\u4e3a0\uff0c\u7531\u7f51\u7edc\u9519\u8bef\u9020\u6210\u7684\u6570\u636e\u5e93\u8fde\u63a5\u95ee\u9898\u7684\u6301\u7eed\u65f6\u95f4\u4e5f\u4e0d\u4f1a\u8d85\u8fc730\u5206\u949f\u3002\u00a0<\/p>\n<p>\u901a\u5e38\uff0c\u5e94\u7528\u4f1a\u5728\u8c03\u7528Socket.read()\u65f6\u7531\u4e8e\u7f51\u7edc\u95ee\u9898\u88ab\u963b\u585e\u4f4f\uff0c\u800c\u5f88\u5c11\u5728\u8c03\u7528Socket.write()\u65f6\u8fdb\u5165waiting\u72b6\u6001\uff0c\u8fd9\u53d6\u51b3\u4e8e\u7f51\u7edc\u6784\u6210\u548c\u9519\u8bef\u7c7b\u578b\u3002\u5f53Socket.write()\u88ab\u8c03\u7528\u65f6\uff0c\u6570\u636e\u88ab\u5199\u5165\u5230\u64cd\u4f5c\u7cfb\u7edf\u5185\u6838\u7684\u7f13\u51b2\u533a\uff0c\u63a7\u5236\u6743\u7acb\u5373\u56de\u5230\u5e94\u7528\u624b\u4e0a\u3002\u56e0\u6b64\uff0c\u4e00\u65e6\u6570\u636e\u88ab\u5199\u5165\u5185\u6838\u7f13\u51b2\u533a\uff0cSocket.write()\u8c03\u7528\u5c31\u5fc5\u7136\u4f1a\u6210\u529f\u3002\u4f46\u662f\uff0c\u5982\u679c\u7cfb\u7edf\u5185\u6838\u7f13\u51b2\u533a\u7531\u4e8e\u67d0\u79cd\u7f51\u7edc\u9519\u8bef\u800c\u6ee1\u4e86\u7684\u8bdd\uff0cSocket.write()\u4e5f\u4f1a\u8fdb\u5165waiting\u72b6\u6001\u3002\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u64cd\u4f5c\u7cfb\u7edf\u4f1a\u5c1d\u8bd5\u91cd\u65b0\u53d1\u5305\uff0c\u5f53\u8fbe\u5230\u91cd\u8bd5\u7684\u65f6\u95f4\u9650\u5236\u65f6\uff0c\u5c06\u4ea7\u751f\u7cfb\u7edf\u9519\u8bef\u3002\u5728\u6211\u4eec\u516c\u53f8\uff0c\u91cd\u65b0\u53d1\u5305\u7684\u8d85\u65f6\u65f6\u95f4\u88ab\u8bbe\u7f6e\u4e3a15\u5206\u949f\u3002\u00a0<\/p>\n<p>\u81f3\u6b64\uff0c\u6211\u5df2\u7ecf\u5bf9JDBC\u7684\u5185\u90e8\u64cd\u4f5c\u505a\u4e86\u8bb2\u89e3\uff0c\u5e0c\u671b\u80fd\u591f\u8ba9\u5927\u5bb6\u5b66\u4f1a\u5982\u4f55\u6b63\u786e\u7684\u914d\u7f6e\u8d85\u65f6\u65f6\u95f4\uff0c\u4ece\u800c\u51cf\u5c11\u9519\u8bef\u7684\u53d1\u751f\u3002\u00a0<\/p>\n<p>\u6700\u540e\uff0c\u6211\u5c06\u5217\u51fa\u4e00\u4e9b\u5e38\u89c1\u7684\u95ee\u9898\u3002\u00a0<\/p>\n<p>FAQ<br \/>\n\u00a0<\/p>\n<p>Q1. \u6211\u5df2\u7ecf\u4f7f\u7528Statement.setQueryTimeout()\u65b9\u6cd5\u8bbe\u7f6e\u4e86\u67e5\u8be2\u8d85\u65f6\uff0c\u4f46\u5728\u7f51\u7edc\u51fa\u9519\u65f6\u5e76\u6ca1\u6709\u4ea7\u751f\u4f5c\u7528\u3002\u00a0<\/p>\n<p>\u2794 \u67e5\u8be2\u8d85\u65f6\u4ec5\u5728socket timeout\u751f\u6548\u7684\u524d\u63d0\u4e0b\u624d\u6709\u6548\uff0c\u5b83\u5e76\u4e0d\u80fd\u7528\u6765\u89e3\u51b3\u5916\u90e8\u7684\u7f51\u7edc\u9519\u8bef\uff0c\u8981\u89e3\u51b3\u8fd9\u79cd\u95ee\u9898\uff0c\u5fc5\u987b\u8bbe\u7f6eJDBC\u7684socket timeout\u3002\u00a0<\/p>\n<p>Q2. transaction timeout\uff0cstatement timeout\u548csocket timeout\u548cDBCP\u7684\u914d\u7f6e\u6709\u4ec0\u4e48\u5173\u7cfb\uff1f\u00a0<\/p>\n<p>\u2794 \u5f53\u901a\u8fc7DBCP\u83b7\u53d6\u6570\u636e\u5e93\u8fde\u63a5\u65f6\uff0c\u9664\u4e86DBCP\u83b7\u53d6\u8fde\u63a5\u65f6\u7684waitTimeout\u914d\u7f6e\u4ee5\u5916\uff0c\u5176\u4ed6\u914d\u7f6e\u5bf9JDBC\u6ca1\u6709\u4ec0\u4e48\u5f71\u54cd\u3002\u00a0<\/p>\n<p>Q3. \u5982\u679c\u8bbe\u7f6e\u4e86JDBC\u7684socket timeout\uff0c\u90a3DBCP\u8fde\u63a5\u6c60\u4e2d\u5904\u4e8eIDLE\u72b6\u6001\u7684\u8fde\u63a5\u662f\u5426\u4e5f\u4f1a\u5728\u8fbe\u5230\u8d85\u65f6\u65f6\u95f4\u540e\u88ab\u5173\u95ed\uff1f\u00a0<\/p>\n<p>\u2794 \u4e0d\u4f1a\u3002socket\u7684\u8bbe\u7f6e\u53ea\u4f1a\u5728\u4ea7\u751f\u6570\u636e\u8bfb\u5199\u65f6\u751f\u6548\uff0c\u800c\u4e0d\u4f1a\u5bf9DBCP\u4e2d\u7684IDLE\u8fde\u63a5\u4ea7\u751f\u5f71\u54cd\u3002\u5f53DBCP\u4e2d\u53d1\u751f\u65b0\u8fde\u63a5\u521b\u5efa\uff0c\u8001\u7684IDLE\u8fde\u63a5\u88ab\u79fb\u9664\uff0c\u6216\u662f\u8fde\u63a5\u6709\u6548\u6027\u6821\u9a8c\u7684\u65f6\u5019\uff0csocket\u8bbe\u7f6e\u4f1a\u5bf9\u5176\u4ea7\u751f\u4e00\u5b9a\u7684\u5f71\u54cd\uff0c\u4f46\u9664\u975e\u53d1\u751f\u7f51\u7edc\u95ee\u9898\uff0c\u5426\u5219\u5f71\u54cd\u5f88\u5c0f\u3002\u00a0<\/p>\n<p>Q4. socket timeout\u5e94\u8be5\u8bbe\u7f6e\u4e3a\u591a\u5c11\uff1f\u00a0<\/p>\n<p>\u2794 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