{"id":50218,"date":"2025-07-30T22:11:42","date_gmt":"2025-07-30T14:11:42","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/50218.html"},"modified":"2025-07-30T22:11:42","modified_gmt":"2025-07-30T14:11:42","slug":"%e6%95%b0%e6%8d%ae%e5%ba%93%e5%8f%82%e6%95%b0%e8%b0%83%e4%bc%98%e5%ae%9e%e6%88%98%e6%89%8b%e5%86%8c%ef%bc%9a%e5%9f%ba%e4%ba%8e%e6%9c%8d%e5%8a%a1%e5%99%a8%e7%a1%ac%e4%bb%b6%e9%85%8d%e7%bd%ae%e7%9a%84","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/50218.html","title":{"rendered":"\u6570\u636e\u5e93\u53c2\u6570\u8c03\u4f18\u5b9e\u6218\u624b\u518c\uff1a\u57fa\u4e8e\u670d\u52a1\u5668\u786c\u4ef6\u914d\u7f6e\u7684\u53c2\u6570\u4f18\u5316\u64cd\u4f5c"},"content":{"rendered":"<p>\u6570\u636e\u5e93\u53c2\u6570\u662f\u8fde\u63a5\u786c\u4ef6\u8d44\u6e90\u4e0e\u4e1a\u52a1\u8d1f\u8f7d\u7684 \u201c\u6865\u6881\u201d&#xff0c;\u5176\u914d\u7f6e\u5408\u7406\u6027\u76f4\u63a5\u51b3\u5b9a\u6570\u636e\u5e93\u6027\u80fd\u4e0a\u9650\u3002\u65e0\u8bba\u662f MySQL \u7684 my.cnf&#xff08;\u6216 my.ini&#xff09;\u8fd8\u662f Oracle \u7684 init.ora&#xff08;\u6216 spfile&#xff09;&#xff0c;\u53c2\u6570\u8bbe\u7f6e\u90fd\u9700\u4e0e\u670d\u52a1\u5668\u786c\u4ef6\u914d\u7f6e&#xff08;CPU \u6838\u5fc3\u6570\u3001\u5185\u5b58\u5bb9\u91cf\u3001\u78c1\u76d8\u7c7b\u578b\u3001\u7f51\u7edc\u5e26\u5bbd&#xff09;\u6df1\u5ea6\u5339\u914d \u2014\u2014 \u8131\u79bb\u786c\u4ef6\u57fa\u7840\u7684\u53c2\u6570\u8c03\u4f18\u5982\u540c \u201c\u65e0\u7684\u653e\u77e2\u201d&#xff0c;\u4e0d\u4ec5\u65e0\u6cd5\u53d1\u6325\u786c\u4ef6\u6027\u80fd&#xff0c;\u8fd8\u53ef\u80fd\u5bfc\u81f4\u8d44\u6e90\u6d6a\u8d39\u6216\u7cfb\u7edf\u4e0d\u7a33\u5b9a\u3002\u672c\u6587\u5c06\u4ece\u786c\u4ef6\u4e0e\u53c2\u6570\u7684\u5173\u8054\u903b\u8f91\u51fa\u53d1&#xff0c;\u8be6\u89e3 MySQL \u4e0e Oracle \u57fa\u4e8e\u670d\u52a1\u5668\u914d\u7f6e\u7684\u53c2\u6570\u4f18\u5316\u5b9e\u6218\u6280\u5de7&#xff0c;\u5e2e\u52a9\u6570\u636e\u5e93\u7ba1\u7406\u5458&#xff08;DBAs&#xff09;\u6784\u5efa \u201c\u786c\u4ef6\u9002\u914d\u578b\u201d \u53c2\u6570\u4f53\u7cfb\u3002<img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"697\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/07\/20250730141140-688a281c4d531.png\" width=\"1108\" \/><\/p>\n<h3>\u4e00\u3001\u6570\u636e\u5e93\u53c2\u6570\u8c03\u4f18\u7684\u5e95\u5c42\u903b\u8f91&#xff1a;\u786c\u4ef6\u4e0e\u53c2\u6570\u7684\u5339\u914d\u539f\u5219<\/h3>\n<p>\u6570\u636e\u5e93\u53c2\u6570\u7684\u672c\u8d28\u662f\u5bf9\u786c\u4ef6\u8d44\u6e90&#xff08;CPU\u3001\u5185\u5b58\u3001\u78c1\u76d8 I\/O\u3001\u7f51\u7edc&#xff09;\u7684\u5206\u914d\u89c4\u5219\u4e0e\u4f7f\u7528\u9650\u5236\u8fdb\u884c\u5b9a\u4e49\u3002\u4f8b\u5982&#xff0c;\u5185\u5b58\u53c2\u6570\u51b3\u5b9a\u6570\u636e\u5e93\u53ef\u4f7f\u7528\u7684\u7f13\u5b58\u5927\u5c0f&#xff0c;I\/O \u53c2\u6570\u63a7\u5236\u78c1\u76d8\u8bfb\u5199\u7b56\u7565&#xff0c;CPU \u53c2\u6570\u9650\u5236\u5e76\u53d1\u7ebf\u7a0b\u6570\u91cf\u3002\u53c2\u6570\u8c03\u4f18\u7684\u6838\u5fc3\u76ee\u6807\u662f&#xff1a;\u8ba9\u786c\u4ef6\u8d44\u6e90\u7684\u5206\u914d\u4e0e\u4e1a\u52a1\u8d1f\u8f7d\u9700\u6c42 \u201c\u52a8\u6001\u5e73\u8861\u201d\u2014\u2014 \u65e2\u4e0d\u6d6a\u8d39\u8d44\u6e90&#xff08;\u5982\u5185\u5b58\u95f2\u7f6e&#xff09;&#xff0c;\u4e5f\u4e0d\u8d85\u9650\u4f7f\u7528&#xff08;\u5982 CPU\u8fc7\u8f7d&#xff09;\u3002<\/p>\n<h4>1. \u786c\u4ef6\u8d44\u6e90\u4e0e\u53c2\u6570\u7684\u5173\u8054\u7ef4\u5ea6<\/h4>\n<ul>\n<li>CPU \u4e0e\u5e76\u53d1\u53c2\u6570&#xff1a;CPU \u6838\u5fc3\u6570\u51b3\u5b9a\u6570\u636e\u5e93\u53ef\u540c\u65f6\u5904\u7406\u7684\u7ebf\u7a0b\u6570&#xff0c;\u53c2\u6570\u9700\u9650\u5236\u5e76\u53d1\u7ebf\u7a0b\u6570\u91cf&#xff08;\u5982 MySQL \u7684\u00a0max_connections\u3001Oracle \u7684\u00a0processes&#xff09;&#xff0c;\u907f\u514d\u7ebf\u7a0b\u8fc7\u591a\u5bfc\u81f4 CPU \u4e0a\u4e0b\u6587\u5207\u6362\u9891\u7e41&#xff1b;<\/li>\n<li>\u5185\u5b58\u4e0e\u7f13\u5b58\u53c2\u6570&#xff1a;\u5185\u5b58\u5bb9\u91cf\u51b3\u5b9a\u6570\u636e\u5e93\u7f13\u5b58&#xff08;\u5982\u6570\u636e\u7f13\u5b58\u3001\u7d22\u5f15\u7f13\u5b58\u3001\u65e5\u5fd7\u7f13\u5b58&#xff09;\u7684\u5927\u5c0f&#xff0c;\u53c2\u6570\u9700\u5408\u7406\u5206\u914d\u5185\u5b58\u6bd4\u4f8b&#xff08;\u5982 MySQL \u7684\u00a0innodb_buffer_pool_size\u3001Oracle \u7684\u00a0sga_target&#xff09;&#xff0c;\u51cf\u5c11\u78c1\u76d8 I\/O&#xff1b;<\/li>\n<li>\u78c1\u76d8\u7c7b\u578b\u4e0e I\/O \u53c2\u6570&#xff1a;\u673a\u68b0\u786c\u76d8&#xff08;HDD&#xff09;\u4e0e\u56fa\u6001\u786c\u76d8&#xff08;SSD&#xff09;\u7684\u8bfb\u5199\u6027\u80fd\u5dee\u5f02\u663e\u8457&#xff0c;\u53c2\u6570\u9700\u9002\u914d\u78c1\u76d8\u7279\u6027&#xff08;\u5982 MySQL \u7684\u00a0innodb_flush_log_at_trx_commit\u3001Oracle \u7684\u00a0db_writer_processes&#xff09;&#xff0c;\u4f18\u5316 I\/O \u7b56\u7565&#xff1b;<\/li>\n<li>\u7f51\u7edc\u5e26\u5bbd\u4e0e\u8fde\u63a5\u53c2\u6570&#xff1a;\u9ad8\u5e26\u5bbd\u73af\u5883\u53ef\u652f\u6301\u66f4\u591a\u8fdc\u7a0b\u8fde\u63a5&#xff0c;\u53c2\u6570\u9700\u8c03\u6574\u8fde\u63a5\u8d85\u65f6\u65f6\u95f4\u3001\u6570\u636e\u5305\u5927\u5c0f&#xff08;\u5982 MySQL \u7684\u00a0wait_timeout\u3001Oracle \u7684\u00a0sqlnet.recv_timeout&#xff09;&#xff0c;\u907f\u514d\u7f51\u7edc\u74f6\u9888\u3002<\/li>\n<\/ul>\n<h4>2. \u53c2\u6570\u8c03\u4f18\u7684\u6838\u5fc3\u539f\u5219<\/h4>\n<ul>\n<li>\u57fa\u4e8e\u786c\u4ef6\u4e0a\u9650\u8bbe\u9650&#xff1a;\u53c2\u6570\u503c\u4e0d\u5f97\u8d85\u8fc7\u786c\u4ef6\u7269\u7406\u4e0a\u9650&#xff08;\u5982\u5185\u5b58\u53c2\u6570\u603b\u548c\u2264\u670d\u52a1\u5668\u5185\u5b58\u7684 80%&#xff0c;\u907f\u514d\u5360\u7528\u64cd\u4f5c\u7cfb\u7edf\u9884\u7559\u5185\u5b58&#xff09;&#xff1b;<\/li>\n<li>\u9002\u914d\u4e1a\u52a1\u8d1f\u8f7d\u7279\u6027&#xff1a;\u8bfb\u5bc6\u96c6\u578b\u4e1a\u52a1&#xff08;\u5982\u7535\u5546\u5546\u54c1\u67e5\u8be2&#xff09;\u9700\u52a0\u5927\u7f13\u5b58\u53c2\u6570&#xff0c;\u5199\u5bc6\u96c6\u578b\u4e1a\u52a1&#xff08;\u5982\u652f\u4ed8\u4ea4\u6613&#xff09;\u9700\u4f18\u5316\u65e5\u5fd7\u5237\u65b0\u53c2\u6570&#xff1b;<\/li>\n<li>\u6e10\u8fdb\u5f0f\u8c03\u6574\u4e0e\u9a8c\u8bc1&#xff1a;\u53c2\u6570\u8c03\u4f18\u9700\u5206\u6b65\u8fdb\u884c&#xff0c;\u6bcf\u6b21\u8c03\u6574\u540e\u901a\u8fc7\u6027\u80fd\u6307\u6807&#xff08;\u5982\u54cd\u5e94\u65f6\u95f4\u3001\u541e\u5410\u91cf&#xff09;\u9a8c\u8bc1\u6548\u679c&#xff0c;\u907f\u514d\u4e00\u6b21\u6027\u5927\u5e45\u4fee\u6539\u5bfc\u81f4\u7cfb\u7edf\u5f02\u5e38\u3002<\/li>\n<\/ul>\n<h3>\u4e8c\u3001MySQL \u53c2\u6570\u8c03\u4f18&#xff1a;\u57fa\u4e8e my.cnf \u7684\u786c\u4ef6\u9002\u914d\u5b9e\u6218<\/h3>\n<p>MySQL \u7684\u6838\u5fc3\u53c2\u6570\u96c6\u4e2d\u5728 my.cnf&#xff08;Linux&#xff09;\u6216 my.ini&#xff08;Windows&#xff09;\u914d\u7f6e\u6587\u4ef6\u4e2d&#xff0c;\u4e0d\u540c\u5b58\u50a8\u5f15\u64ce&#xff08;\u5982 InnoDB\u3001MyISAM&#xff09;\u7684\u53c2\u6570\u5dee\u5f02\u8f83\u5927&#xff0c;\u5176\u4e2d InnoDB \u4f5c\u4e3a\u9ed8\u8ba4\u5f15\u64ce&#xff0c;\u5176\u53c2\u6570\u4f18\u5316\u5bf9\u6027\u80fd\u5f71\u54cd\u6700\u663e\u8457\u3002\u4ee5\u4e0b\u4ece\u786c\u4ef6\u914d\u7f6e\u51fa\u53d1&#xff0c;\u8be6\u89e3\u5173\u952e\u53c2\u6570\u7684\u8c03\u6574\u6280\u5de7\u3002<\/p>\n<h4>1. \u57fa\u4e8e CPU \u914d\u7f6e\u7684\u53c2\u6570\u4f18\u5316<\/h4>\n<p>CPU \u6838\u5fc3\u6570\u51b3\u5b9a MySQL \u53ef\u5e76\u884c\u5904\u7406\u7684\u4efb\u52a1\u6570&#xff0c;\u53c2\u6570\u9700\u5e73\u8861\u5e76\u53d1\u91cf\u4e0e CPU \u8d1f\u8f7d&#xff1a;<\/p>\n<ul>\n<li>max_connections&#xff08;\u6700\u5927\u8fde\u63a5\u6570&#xff09;&#xff1a;\u9700\u6839\u636e CPU \u6838\u5fc3\u6570\u4e0e\u4e1a\u52a1\u5e76\u53d1\u91cf\u8bbe\u7f6e&#xff0c;\u901a\u5e38\u5efa\u8bae\u503c\u4e3a \u201cCPU \u6838\u5fc3\u6570 \u00d78~16\u201d\u3002\u4f8b\u5982&#xff0c;16 \u6838 CPU \u53ef\u8bbe\u7f6e\u4e3a 128~256&#xff0c;\u907f\u514d\u8fde\u63a5\u8fc7\u591a\u5bfc\u81f4 CPU \u8fc7\u8f7d\u3002\u82e5\u4e1a\u52a1\u5e76\u53d1\u91cf\u8d85\u8fc7\u6b64\u503c&#xff0c;\u9700\u901a\u8fc7\u8fde\u63a5\u6c60&#xff08;\u5982 PgBouncer&#xff09;\u63a7\u5236&#xff0c;\u800c\u975e\u76f2\u76ee\u8c03\u5927\u53c2\u6570&#xff1b;<\/li>\n<li>innodb_thread_concurrency&#xff08;InnoDB \u5e76\u53d1\u7ebf\u7a0b\u6570&#xff09;&#xff1a;\u9650\u5236 InnoDB \u5185\u6838\u7684\u5e76\u53d1\u7ebf\u7a0b\u6570&#xff0c;\u5efa\u8bae\u503c\u4e3a \u201cCPU \u6838\u5fc3\u6570 \u00d72\u201d&#xff08;\u5982 16 \u6838 CPU \u8bbe\u4e3a 32&#xff09;&#xff0c;\u907f\u514d\u7ebf\u7a0b\u7ade\u4e89 CPU \u8d44\u6e90&#xff1b;<\/li>\n<li>query_cache_type&#xff08;\u67e5\u8be2\u7f13\u5b58\u5f00\u5173&#xff09;&#xff1a;\u9ad8\u5e76\u53d1\u573a\u666f\u4e0b\u5efa\u8bae\u5173\u95ed&#xff08;\u8bbe\u4e3a 0&#xff09;&#xff0c;\u56e0\u67e5\u8be2\u7f13\u5b58\u7684\u9501\u673a\u5236\u4f1a\u5bfc\u81f4 CPU \u989d\u5916\u5f00\u9500&#xff0c;\u5c24\u5176\u5728\u5199\u64cd\u4f5c\u9891\u7e41\u65f6\u6027\u80fd\u635f\u8017\u66f4\u660e\u663e\u3002<\/li>\n<\/ul>\n<h4>2. \u57fa\u4e8e\u5185\u5b58\u914d\u7f6e\u7684\u53c2\u6570\u4f18\u5316<\/h4>\n<p>\u5185\u5b58\u662f MySQL \u6027\u80fd\u4f18\u5316\u7684 \u201c\u6838\u5fc3\u6218\u573a\u201d&#xff0c;\u5408\u7406\u5206\u914d\u5185\u5b58\u53ef\u663e\u8457\u51cf\u5c11\u78c1\u76d8 I\/O&#xff1a;<\/p>\n<ul>\n<li>innodb_buffer_pool_size&#xff08;InnoDB \u7f13\u51b2\u6c60\u5927\u5c0f&#xff09;&#xff1a;\u4f5c\u4e3a\u6700\u5173\u952e\u7684\u5185\u5b58\u53c2\u6570&#xff0c;\u5efa\u8bae\u503c\u4e3a\u670d\u52a1\u5668\u5185\u5b58\u7684 50%~70%&#xff08;\u5982 64GB \u5185\u5b58\u8bbe\u4e3a 40GB&#xff09;\u3002\u7f13\u51b2\u6c60\u7528\u4e8e\u7f13\u5b58\u6570\u636e\u9875\u548c\u7d22\u5f15\u9875&#xff0c;\u503c\u8d8a\u5927&#xff0c;\u67e5\u8be2\u547d\u4e2d\u7f13\u5b58\u7684\u6982\u7387\u8d8a\u9ad8&#xff0c;\u78c1\u76d8 I\/O \u8d8a\u5c11&#xff1b;<\/li>\n<li>innodb_log_buffer_size&#xff08;\u65e5\u5fd7\u7f13\u51b2\u533a\u5927\u5c0f&#xff09;&#xff1a;\u7528\u4e8e\u7f13\u5b58\u4e8b\u52a1\u65e5\u5fd7&#xff0c;\u5efa\u8bae\u503c\u4e3a 16MB~64MB&#xff08;\u6839\u636e\u4e8b\u52a1\u91cf\u8c03\u6574&#xff09;\u3002\u503c\u8fc7\u5c0f\u4f1a\u5bfc\u81f4\u65e5\u5fd7\u9891\u7e41\u5237\u76d8&#xff0c;\u503c\u8fc7\u5927\u5219\u53ef\u80fd\u589e\u52a0\u5d29\u6e83\u6062\u590d\u65f6\u95f4&#xff1b;<\/li>\n<li>key_buffer_size&#xff08;MyISAM \u7d22\u5f15\u7f13\u5b58\u5927\u5c0f&#xff09;&#xff1a;\u82e5\u4f7f\u7528 MyISAM \u5f15\u64ce&#xff0c;\u5efa\u8bae\u503c\u4e3a\u670d\u52a1\u5668\u5185\u5b58\u7684 10%~20%&#xff08;\u5982 64GB \u5185\u5b58\u8bbe\u4e3a 8GB&#xff09;&#xff0c;\u4f46 InnoDB \u5f15\u64ce\u4e0b\u6b64\u53c2\u6570\u53ef\u8bbe\u4e3a\u8f83\u5c0f\u503c&#xff08;\u5982 64MB&#xff09;&#xff1b;<\/li>\n<li>\u5185\u5b58\u5206\u914d\u539f\u5219&#xff1a;\u6240\u6709\u5185\u5b58\u53c2\u6570\u603b\u548c\u9700\u2264\u670d\u52a1\u5668\u5185\u5b58\u7684 80%&#xff0c;\u9884\u7559 20% \u7ed9\u64cd\u4f5c\u7cfb\u7edf\u4e0e\u5176\u4ed6\u8fdb\u7a0b&#xff08;\u5982\u76d1\u63a7\u5de5\u5177\u3001\u5907\u4efd\u8fdb\u7a0b&#xff09;\u3002<\/li>\n<\/ul>\n<h4>3. \u57fa\u4e8e\u78c1\u76d8\u7c7b\u578b\u7684 I\/O \u53c2\u6570\u4f18\u5316<\/h4>\n<p>\u78c1\u76d8 I\/O \u662f\u6570\u636e\u5e93\u6027\u80fd\u7684\u5e38\u89c1\u74f6\u9888&#xff0c;\u53c2\u6570\u9700\u9002\u914d\u78c1\u76d8\u7c7b\u578b&#xff1a;<\/p>\n<ul>\n<li>\u673a\u68b0\u786c\u76d8&#xff08;HDD&#xff09;\u573a\u666f&#xff1a;HDD \u968f\u673a\u8bfb\u5199\u6027\u80fd\u5dee&#xff0c;\u9700\u51cf\u5c11 I\/O \u6b21\u6570&#xff1a;\n<ul>\n<li>innodb_flush_log_at_trx_commit&#061;2&#xff1a;\u4e8b\u52a1\u63d0\u4ea4\u65f6&#xff0c;\u65e5\u5fd7\u5148\u5199\u5165\u64cd\u4f5c\u7cfb\u7edf\u7f13\u5b58&#xff0c;\u518d\u7531\u64cd\u4f5c\u7cfb\u7edf\u5b9a\u671f\u5237\u76d8&#xff08;\u5982\u6bcf\u79d2\u4e00\u6b21&#xff09;&#xff0c;\u51cf\u5c11\u78c1\u76d8 I\/O \u6b21\u6570&#xff08;\u727a\u7272\u90e8\u5206\u5b89\u5168\u6027&#xff0c;\u9002\u5408\u975e\u6838\u5fc3\u4e1a\u52a1&#xff09;&#xff1b;<\/li>\n<li>innodb_read_io_threads&#061;4\u3001innodb_write_io_threads&#061;4&#xff1a;\u589e\u52a0 I\/O \u7ebf\u7a0b\u6570&#xff0c;\u5e76\u884c\u5904\u7406\u8bfb\u5199\u8bf7\u6c42&#xff1b;<\/li>\n<\/ul>\n<\/li>\n<li>\u56fa\u6001\u786c\u76d8&#xff08;SSD&#xff09;\u573a\u666f&#xff1a;SSD \u8bfb\u5199\u901f\u5ea6\u5feb&#xff0c;\u4f46\u5bff\u547d\u53d7\u5199\u5165\u6b21\u6570\u5f71\u54cd&#xff0c;\u9700\u5e73\u8861\u6027\u80fd\u4e0e\u5bff\u547d&#xff1a;\n<ul>\n<li>innodb_flush_log_at_trx_commit&#061;1&#xff1a;\u4e8b\u52a1\u63d0\u4ea4\u65f6\u7acb\u5373\u5237\u76d8&#xff08;\u9ed8\u8ba4\u503c&#xff09;&#xff0c;\u786e\u4fdd\u6570\u636e\u5b89\u5168&#xff0c;\u9002\u5408\u6838\u5fc3\u4e1a\u52a1&#xff1b;<\/li>\n<li>innodb_page_size&#061;16k&#xff1a;\u8bbe\u7f6e\u8f83\u5927\u9875\u5927\u5c0f&#xff08;\u9ed8\u8ba4 16k&#xff09;&#xff0c;\u51cf\u5c11\u9875\u6570\u91cf&#xff0c;\u964d\u4f4e\u5199\u5165\u6b21\u6570&#xff1b;<\/li>\n<\/ul>\n<\/li>\n<li>\u901a\u7528\u4f18\u5316&#xff1a;innodb_file_per_table&#061;1&#xff08;\u72ec\u7acb\u8868\u7a7a\u95f4&#xff09;&#xff0c;\u907f\u514d\u5355\u6587\u4ef6\u8fc7\u5927\u5bfc\u81f4\u7684 I\/O \u6548\u7387\u4e0b\u964d&#xff1b;innodb_flush_method&#061;O_DIRECT&#xff08;\u7ed5\u8fc7\u64cd\u4f5c\u7cfb\u7edf\u7f13\u5b58&#xff09;&#xff0c;\u51cf\u5c11\u53cc\u91cd\u7f13\u5b58\u6d6a\u8d39\u3002<\/li>\n<\/ul>\n<h4>4. \u57fa\u4e8e\u4e1a\u52a1\u573a\u666f\u7684\u53c2\u6570\u8865\u5145<\/h4>\n<ul>\n<li>\u8bfb\u5bc6\u96c6\u578b\u4e1a\u52a1&#xff08;\u5982\u7535\u5546\u5546\u54c1\u67e5\u8be2&#xff09;&#xff1a;\u52a0\u5927\u00a0innodb_buffer_pool_size&#xff0c;\u5f00\u542f\u67e5\u8be2\u7f13\u5b58&#xff08;\u82e5\u9002\u7528&#xff09;&#xff0c;\u8bbe\u7f6e\u00a0innodb_read_ahead_threshold&#061;8&#xff08;\u9884\u8bfb\u66f4\u591a\u6570\u636e\u9875&#xff09;&#xff1b;<\/li>\n<li>\u5199\u5bc6\u96c6\u578b\u4e1a\u52a1&#xff08;\u5982\u652f\u4ed8\u4ea4\u6613&#xff09;&#xff1a;\u8c03\u5927\u00a0innodb_log_file_size&#xff08;\u5982 1GB&#xff09;&#xff0c;\u51cf\u5c11\u65e5\u5fd7\u6587\u4ef6\u5207\u6362\u9891\u7387&#xff1b;\u8bbe\u7f6e\u00a0innodb_flush_neighbors&#061;0&#xff08;\u5173\u95ed\u90bb\u63a5\u9875\u5237\u65b0&#xff09;&#xff0c;\u907f\u514d SSD \u4e0b\u7684\u65e0\u6548\u5199\u5165&#xff1b;<\/li>\n<li>\u9ad8\u5e76\u53d1\u4e1a\u52a1&#xff1a;\u8c03\u5927\u00a0max_connections&#xff08;\u914d\u5408\u8fde\u63a5\u6c60\u4f7f\u7528&#xff09;&#xff0c;\u8bbe\u7f6e\u00a0back_log&#061;1024&#xff08;\u8fde\u63a5\u961f\u5217\u957f\u5ea6&#xff09;&#xff0c;\u907f\u514d\u8fde\u63a5\u62d2\u7edd\u3002<\/li>\n<\/ul>\n<h3>\u4e09\u3001Oracle \u53c2\u6570\u8c03\u4f18&#xff1a;\u57fa\u4e8e init.ora \u7684\u786c\u4ef6\u9002\u914d\u5b9e\u6218<\/h3>\n<p>Oracle \u6570\u636e\u5e93\u7684\u53c2\u6570\u4f53\u7cfb\u66f4\u590d\u6742&#xff0c;\u6838\u5fc3\u53c2\u6570\u5b58\u50a8\u5728 init.ora&#xff08;\u6587\u672c\u6587\u4ef6&#xff09;\u6216 spfile&#xff08;\u4e8c\u8fdb\u5236\u6587\u4ef6&#xff09;\u4e2d&#xff0c;\u5206\u4e3a\u9759\u6001\u53c2\u6570&#xff08;\u9700\u91cd\u542f\u751f\u6548&#xff09;\u4e0e\u52a8\u6001\u53c2\u6570&#xff08;\u53ef\u5728\u7ebf\u4fee\u6539&#xff09;\u3002\u5176\u8c03\u4f18\u9700\u56f4\u7ed5\u7cfb\u7edf\u5168\u5c40\u533a&#xff08;SGA&#xff09;\u3001\u7a0b\u5e8f\u5168\u5c40\u533a&#xff08;PGA&#xff09;\u3001\u8fdb\u7a0b\u7ba1\u7406\u7b49\u6838\u5fc3\u7ef4\u5ea6&#xff0c;\u9002\u914d\u786c\u4ef6\u914d\u7f6e\u3002<\/p>\n<h4>1. \u57fa\u4e8e CPU \u914d\u7f6e\u7684\u53c2\u6570\u4f18\u5316<\/h4>\n<p>Oracle \u5bf9 CPU \u7684\u5229\u7528\u66f4\u7cbe\u7ec6\u5316&#xff0c;\u53c2\u6570\u9700\u63a7\u5236\u8fdb\u7a0b\u4e0e\u7ebf\u7a0b\u6570\u91cf&#xff1a;<\/p>\n<ul>\n<li>processes&#xff08;\u6700\u5927\u8fdb\u7a0b\u6570&#xff09;&#xff1a;\u5efa\u8bae\u503c\u4e3a CPU \u6838\u5fc3\u6570\u7684 10~15 \u500d&#xff08;\u5982 16 \u6838 CPU \u8bbe\u4e3a 200&#xff09;&#xff0c;\u5305\u542b\u7528\u6237\u8fdb\u7a0b\u3001\u540e\u53f0\u8fdb\u7a0b&#xff0c;\u503c\u8fc7\u5927\u6613\u5bfc\u81f4 CPU \u8fc7\u8f7d&#xff1b;<\/li>\n<li>sessions&#xff08;\u6700\u5927\u4f1a\u8bdd\u6570&#xff09;&#xff1a;\u901a\u5e38\u8bbe\u4e3a\u00a0processes\u00a0\u7684 1.1~1.5 \u500d&#xff08;\u5982 processes&#061;200 \u65f6\u8bbe\u4e3a 250&#xff09;&#xff0c;\u907f\u514d\u4f1a\u8bdd\u6570\u8d85\u8fc7\u8fdb\u7a0b\u627f\u8f7d\u80fd\u529b&#xff1b;<\/li>\n<li>parallel_max_servers&#xff08;\u6700\u5927\u5e76\u884c\u670d\u52a1\u5668\u6570&#xff09;&#xff1a;\u63a7\u5236\u5e76\u884c\u67e5\u8be2\u7684\u8fdb\u7a0b\u6570&#xff0c;\u5efa\u8bae\u503c\u4e3a CPU \u6838\u5fc3\u6570\u7684 2~4 \u500d&#xff08;\u5982 16 \u6838 CPU \u8bbe\u4e3a 32&#xff09;&#xff0c;\u907f\u514d\u5e76\u884c\u8fdb\u7a0b\u8fc7\u591a\u62a2\u5360 CPU \u8d44\u6e90\u3002<\/li>\n<\/ul>\n<h4>2. \u57fa\u4e8e\u5185\u5b58\u914d\u7f6e\u7684\u53c2\u6570\u4f18\u5316<\/h4>\n<p>Oracle \u5185\u5b58\u5206\u4e3a SGA&#xff08;\u7cfb\u7edf\u5168\u5c40\u533a&#xff09;\u4e0e PGA&#xff08;\u7a0b\u5e8f\u5168\u5c40\u533a&#xff09;&#xff0c;\u53c2\u6570\u9700\u5408\u7406\u5206\u914d\u4e24\u8005\u6bd4\u4f8b&#xff1a;<\/p>\n<ul>\n<li>sga_target&#xff08;SGA \u76ee\u6807\u5927\u5c0f&#xff09;&#xff1a;SGA \u7528\u4e8e\u7f13\u5b58\u6570\u636e\u3001\u7d22\u5f15\u3001\u65e5\u5fd7\u7b49\u5168\u5c40\u4fe1\u606f&#xff0c;\u5efa\u8bae\u503c\u4e3a\u670d\u52a1\u5668\u5185\u5b58\u7684 40%~60%&#xff08;\u5982 64GB \u5185\u5b58\u8bbe\u4e3a 32GB&#xff09;&#xff1b;<\/li>\n<li>pga_aggregate_target&#xff08;PGA \u603b\u76ee\u6807\u5927\u5c0f&#xff09;&#xff1a;PGA \u7528\u4e8e\u5355\u4e2a\u4f1a\u8bdd\u7684\u6392\u5e8f\u3001\u54c8\u5e0c\u7b49\u64cd\u4f5c&#xff0c;\u5efa\u8bae\u503c\u4e3a\u670d\u52a1\u5668\u5185\u5b58\u7684 10%~20%&#xff08;\u5982 64GB \u5185\u5b58\u8bbe\u4e3a 12GB&#xff09;&#xff1b;<\/li>\n<li>db_cache_size&#xff08;\u6570\u636e\u7f13\u51b2\u533a\u5927\u5c0f&#xff09;&#xff1a;SGA \u7684\u6838\u5fc3\u7ec4\u6210\u90e8\u5206&#xff0c;\u5efa\u8bae\u503c\u4e3a SGA \u7684 50%~70%&#xff08;\u5982 SGA&#061;32GB \u65f6\u8bbe\u4e3a 20GB&#xff09;&#xff0c;\u7528\u4e8e\u7f13\u5b58\u6570\u636e\u5757&#xff0c;\u51cf\u5c11\u78c1\u76d8 I\/O&#xff1b;<\/li>\n<li>shared_pool_size&#xff08;\u5171\u4eab\u6c60\u5927\u5c0f&#xff09;&#xff1a;\u7528\u4e8e\u7f13\u5b58 SQL \u8bed\u53e5\u3001\u5b58\u50a8\u8fc7\u7a0b&#xff0c;\u5efa\u8bae\u503c\u4e3a SGA \u7684 15%~25%&#xff08;\u5982 SGA&#061;32GB \u65f6\u8bbe\u4e3a 8GB&#xff09;&#xff0c;\u503c\u8fc7\u5c0f\u4f1a\u5bfc\u81f4 SQL \u9891\u7e41\u89e3\u6790&#xff0c;\u503c\u8fc7\u5927\u6613\u9020\u6210\u5185\u5b58\u6d6a\u8d39\u3002<\/li>\n<\/ul>\n<h4>3. \u57fa\u4e8e\u78c1\u76d8\u7c7b\u578b\u7684 I\/O \u53c2\u6570\u4f18\u5316<\/h4>\n<p>Oracle \u7684 I\/O \u53c2\u6570\u9700\u9002\u914d\u78c1\u76d8\u6027\u80fd\u4e0e\u4e1a\u52a1\u5b89\u5168\u6027\u9700\u6c42&#xff1a;<\/p>\n<ul>\n<li>\u673a\u68b0\u786c\u76d8&#xff08;HDD&#xff09;\u573a\u666f&#xff1a;\n<ul>\n<li>db_writer_processes&#061;4&#xff08;\u6839\u636e CPU \u6838\u5fc3\u6570\u8c03\u6574&#xff09;&#xff1a;\u589e\u52a0\u6570\u636e\u5e93\u5199\u5165\u8fdb\u7a0b&#xff0c;\u5e76\u884c\u5904\u7406\u810f\u6570\u636e\u5757\u5199\u5165&#xff1b;<\/li>\n<li>log_buffer&#061;16M&#xff1a;\u52a0\u5927\u65e5\u5fd7\u7f13\u51b2\u533a&#xff0c;\u51cf\u5c11\u65e5\u5fd7\u5199\u5165\u6b21\u6570&#xff1b;<\/li>\n<li>fast_start_mttr_target&#061;300&#xff08;\u5355\u4f4d\u79d2&#xff09;&#xff1a;\u8bbe\u7f6e\u5b9e\u4f8b\u6062\u590d\u65f6\u95f4\u76ee\u6807\u4e3a 5 \u5206\u949f&#xff0c;\u5e73\u8861\u6062\u590d\u901f\u5ea6\u4e0e I\/O \u5f00\u9500&#xff1b;<\/li>\n<\/ul>\n<\/li>\n<li>\u56fa\u6001\u786c\u76d8&#xff08;SSD&#xff09;\u573a\u666f&#xff1a;\n<ul>\n<li>db_writer_processes&#061;8&#xff1a;\u5229\u7528 SSD \u9ad8\u5e76\u53d1\u7279\u6027&#xff0c;\u589e\u52a0\u5199\u5165\u8fdb\u7a0b&#xff1b;<\/li>\n<li>log_checkpoint_interval&#061;10000&#xff1a;\u8c03\u5927\u68c0\u67e5\u70b9\u95f4\u9694&#xff0c;\u51cf\u5c11\u68c0\u67e5\u70b9\u89e6\u53d1\u7684 I\/O \u64cd\u4f5c&#xff1b;<\/li>\n<li>filesystemio_options&#061;SETALL&#xff1a;\u542f\u7528\u5f02\u6b65 I\/O \u4e0e\u76f4\u63a5 I\/O&#xff0c;\u5145\u5206\u53d1\u6325 SSD \u6027\u80fd\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h4>4. \u57fa\u4e8e\u4e1a\u52a1\u573a\u666f\u7684\u53c2\u6570\u8865\u5145<\/h4>\n<ul>\n<li>\u6570\u636e\u4ed3\u5e93&#xff08;\u8bfb\u5bc6\u96c6\u3001\u5927\u67e5\u8be2&#xff09;&#xff1a;\u8c03\u5927\u00a0pga_aggregate_target&#xff08;\u5982\u670d\u52a1\u5668\u5185\u5b58\u7684 30%&#xff09;&#xff0c;\u652f\u6301\u590d\u6742\u6392\u5e8f\u4e0e\u54c8\u5e0c\u64cd\u4f5c&#xff1b;\u5f00\u542f\u5e76\u884c\u67e5\u8be2&#xff08;parallel_query&#061;true&#xff09;&#xff1b;<\/li>\n<li>OLTP&#xff08;\u8054\u673a\u4e8b\u52a1\u5904\u7406&#xff0c;\u5199\u5bc6\u96c6&#xff09;&#xff1a;\u8c03\u5927\u00a0log_buffer\u00a0\u4e0e\u00a0db_cache_size&#xff0c;\u51cf\u5c11\u4e8b\u52a1\u65e5\u5fd7\u4e0e\u6570\u636e\u5757\u7684 I\/O&#xff1b;\u8bbe\u7f6e\u00a0cursor_sharing&#061;FORCE&#xff08;\u5171\u4eab\u76f8\u4f3c SQL \u6e38\u6807&#xff09;&#xff0c;\u51cf\u5c11\u786c\u89e3\u6790&#xff1b;<\/li>\n<li>\u9ad8\u53ef\u7528\u573a\u666f&#xff1a;\u542f\u7528\u00a0fast_start_failover&#xff08;\u5feb\u901f\u542f\u52a8\u6545\u969c\u8f6c\u79fb&#xff09;&#xff0c;\u8bbe\u7f6e\u00a0log_archive_dest\u00a0\u591a\u8def\u5f84\u5f52\u6863&#xff0c;\u786e\u4fdd\u65e5\u5fd7\u5197\u4f59\u3002<\/li>\n<\/ul>\n<h3>\u56db\u3001\u53c2\u6570\u8c03\u4f18\u7684\u5168\u6d41\u7a0b\u64cd\u4f5c\u6280\u5de7<\/h3>\n<p>\u53c2\u6570\u8c03\u4f18\u5e76\u975e \u201c\u4e00\u52b3\u6c38\u9038\u201d&#xff0c;\u9700\u9075\u5faa \u201c\u76d1\u63a7 &#8211; \u5206\u6790 &#8211; \u8c03\u6574 &#8211; \u9a8c\u8bc1\u201d \u7684\u95ed\u73af\u6d41\u7a0b&#xff0c;\u7ed3\u5408\u786c\u4ef6\u4e0e\u4e1a\u52a1\u53d8\u5316\u52a8\u6001\u4f18\u5316\u3002<\/p>\n<h4>1. \u8c03\u4f18\u524d\u7684\u51c6\u5907\u5de5\u4f5c<\/h4>\n<ul>\n<li>\u5168\u9762\u6536\u96c6\u786c\u4ef6\u4fe1\u606f&#xff1a;\u8bb0\u5f55\u670d\u52a1\u5668 CPU \u6838\u5fc3\u6570\u3001\u5185\u5b58\u5bb9\u91cf\u3001\u78c1\u76d8\u7c7b\u578b&#xff08;HDD\/SSD&#xff09;\u3001\u78c1\u76d8\u9635\u5217&#xff08;RAID&#xff09;\u914d\u7f6e\u3001\u7f51\u7edc\u5e26\u5bbd\u7b49\u53c2\u6570&#xff0c;\u4f5c\u4e3a\u8c03\u4f18\u57fa\u51c6&#xff1b;<\/li>\n<li>\u8bc4\u4f30\u4e1a\u52a1\u8d1f\u8f7d\u7279\u6027&#xff1a;\u901a\u8fc7\u76d1\u63a7\u5de5\u5177&#xff08;\u5982 MySQL \u7684 Performance Schema\u3001Oracle \u7684 AWR \u62a5\u544a&#xff09;\u5206\u6790\u4e1a\u52a1\u7c7b\u578b&#xff08;\u8bfb \/ \u5199\u5bc6\u96c6&#xff09;\u3001\u9ad8\u5cf0\u65f6\u6bb5\u5e76\u53d1\u91cf\u3001\u67e5\u8be2\u54cd\u5e94\u65f6\u95f4\u7b49&#xff0c;\u660e\u786e\u6027\u80fd\u74f6\u9888&#xff08;\u5982 CPU \u9ad8\u3001I\/O \u7b49\u5f85\u957f&#xff09;&#xff1b;<\/li>\n<li>\u5907\u4efd\u914d\u7f6e\u6587\u4ef6&#xff1a;\u8c03\u4f18\u524d\u5907\u4efd\u539f\u914d\u7f6e\u6587\u4ef6&#xff08;\u5982 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