\u7d22\u5f15\u5b66\u4e60-\u5176\u4ed6\u7d22\u5f15\u7c7b\u578b<\/p>\n
1.\u4e0d\u53ef\u89c1\u7d22\u5f15
\n\t1\uff09\u201c\u4e0d\u53ef\u89c1\u201d\u7d22\u5f15\u53ef\u4ee5\u5bf9\u4f18\u5316\u5668\u9690\u85cf\u8be5\u7d22\u5f15
\n\t2\uff09\u5176\u6700\u5927\u7684\u7528\u9014\u662f\u6d4b\u8bd5\u662f\u5426\u5e94\u8be5\u5220\u9664\u67d0\u4e2a\u7d22\u5f15
\n\t3\uff09\u53ef\u4ee5\u5728\u9700\u8981\u65f6\u6307\u5b9a\u4f7f\u7528\u7d22\u5f15\uff0c\u5176\u4f59\u65f6\u95f4\u4f7f\u5176\u4e0d\u53ef\u89c1
\n\t4\uff09\u6570\u636e\u5e93\u8fd8\u662f\u4f1a\u7ee7\u7eed\u7ef4\u62a4\u4e0d\u53ef\u89c1\u7d22\u5f15\u7684
\n\t5\uff09\u5373\u4f7f\u6307\u5b9ahint\u63d0\u793a\u4e5f\u4e0d\u4f1a\u662f\u4f18\u5316\u5668\u4f7f\u7528\u5230\u4e0d\u53ef\u89c1\u7d22\u5f15
\n\t6\uff09\u53ef\u4ee5\u5728\u4f1a\u8bdd\u6216\u8005\u7cfb\u7edf\u7ea7\u522b\u4f7f\u7528\u53c2\u6570 optimizer_use_invisible_indexes\u8bbe\u7f6e\u4e3atrue\u6765\u4f7f\u4f18\u5316\u5668\u4f7f\u7528\u5230\u8fd9\u4e9b\u4e0d\u53ef\u89c1\u7d22\u5f15\uff0c\u4e5f\u53ef\u7528hint\u63d0\u793a\u5728\u6b64\u65f6\u4f7f\u7528\u8fd9\u4e9b\u4e0d\u53ef\u89c1\u7d22\u5f15
\n\t7\uff09\u6570\u636e\u5e93\u5bf9\u4e0d\u53ef\u89c1\u7d22\u5f15\u7684\u7ef4\u62a4\u548c\u7ef4\u62a4\u666e\u901a\u7d22\u5f15\u7684\u65b9\u5f0f\u662f\u4e00\u6837\u7684\uff0c\u53ef\u4ee5\u7528dbms_stats.gather_index_stats\u6765\u6536\u96c6\u4f18\u5316\u5668\u7edf\u8ba1\u4fe1\u606f<\/p>\n
2.\u51fd\u6570\u7d22\u5f15
\n\t1\uff09\u4f7f\u7528\u51fd\u6570\u7d22\u5f15\u7684\u4f18\u52bf\u662f\uff0c\u6570\u636e\u5e93\u5c06\u63d0\u524d\u8ba1\u7b97\u597d\u4e00\u4e2a\u5217\u6216\u8005\u6d89\u53ca\u591a\u4e2a\u5217\u7684\u51fd\u6570\u6216\u8005\u8868\u8fbe\u5f0f\u7684\u503c\uff0c\u5e76\u628a\u503c\u5b58\u50a8\u5728\u6240\u521b\u5efa\u7684\u57fa\u4e8e\u51fd\u6570\u7684\u7d22\u5f15\u4e2d
\n\t2\uff09\u53ef\u4ee5\u4f7f\u7528case\u8bed\u53e5\u521b\u5efa\u51fd\u6570\u7d22\u5f15\uff0c\u8fd9\u6837\u4e00\u6765\u53ef\u4ee5\u5bf9\u611f\u5174\u8da3\u7684\u503c\u8fdb\u884c\u7d22\u5f15\uff0c\u4ee5\u8fbe\u5230\u5bf9\u90e8\u5206\u6570\u636e\u8fdb\u884c\u7d22\u5f15\u7684\u76ee\u7684
\n\t3\uff09\u5728\u521b\u5efa\u57fa\u4e8e\u7528\u6237\u81ea\u5b9a\u4e49\u51fd\u6570\u7684\u7d22\u5f15\u65f6\uff0c\u8be5\u51fd\u6570\u5fc5\u987b\u662f\u786e\u5b9a\u6027\u7684\uff0c\u4f46\u662foracle\u4e0d\u4f1a\u53bb\u9a8c\u8bc1\u51fd\u6570\u672c\u8eab\u7684\u786e\u5b9a\u6027
\n\t4\uff09\u8fd4\u56de\u503c\u7684\u957f\u5ea6\u53d7\u5230\u51fd\u6570\u8fd4\u56de\u6570\u636e\u7c7b\u578b\u7684\u6700\u5927\u957f\u5ea6\u9650\u5236\uff0c\u5982\u679c\u8fd4\u56de\u503c\u8d85\u8fc7\u5141\u8bb8\u7684\u6700\u5927\u957f\u5ea6\uff0coracle\u4e0d\u4f1a\u53d1\u51fa\u4efb\u4f55\u9519\u8bef\u63d0\u793a\uff0c\u800c\u662f\u76f4\u63a5\u622a\u65ad\u503c\u5e76\u8fd4\u56de
\n\t5\uff09\u5728\u4f7f\u7528\u4e86\u590d\u6742\u7684\u7528\u6237\u81ea\u5b9a\u4e49\u51fd\u6570\u540e\uff0coracle\u7684\u63d2\u5165\u53ca\u66f4\u65b0\u64cd\u4f5c\u5c06\u4f1a\u53d8\u5f97\u66f4\u52a0\u7f13\u6162\uff0c\u4f46\u662f\u5bf9\u4e8e\u67e5\u8be2\u5e26\u6765\u4e86\u597d\u5904
\n\t6\uff09oracle\u5728\u540e\u53f0\u5c06\u57fa\u4e8e\u51fd\u6570\u521b\u5efa\u7684\u7d22\u5f15\u8868\u8fbe\u5f0f\u4f7f\u7528\u865a\u62df\u5217\u6765\u8868\u793a\u7684\uff0c\u6545\u53ef\u4ee5\u6536\u96c6\u8fd9\u4e9b\u57fa\u4e8e\u51fd\u6570\u7684\u7d22\u5f15\u7684\u7edf\u8ba1\u4fe1\u606f
\n\t7\uff09oracle\u81ea\u52a8\u5728\u521b\u5efa\u8fd9\u4e9b\u57fa\u4e8e\u51fd\u6570\u7684\u7d22\u5f15\u7684\u65f6\u5019\u4f1a\u6536\u96c6\u5176\u7edf\u8ba1\u4fe1\u606f
\n\t8\uff09\u521b\u5efa\u4e86\u57fa\u4e8e\u51fd\u6570\u7684\u7d22\u5f15\u540e\uff0c\u5fc5\u987b\u9a6c\u4e0a\u6536\u96c6\u9690\u85cf\u5217\u7684\u7edf\u8ba1\u4fe1\u606f
\n\t9\uff09\u4e5f\u53ef\u6536\u96c6\u51fd\u6570\u8868\u8fbe\u5f0f\u7684\u7edf\u8ba1\u4fe1\u606f
\n\t10\uff09\u7d22\u5f15\u8868\u8fbe\u5f0f\u7684\u6570\u636e\u7c7b\u578b\u4e0d\u80fd\u662fvarchar2\u3001raw\u3001long raw\u6216\u8005\u4e0d\u5b9a\u957f\u7684pl\/sql\u6570\u636e\u7c7b\u578b
\n\t11\uff09\u6570\u636e\u5e93\u505aor\u5c55\u5f00\u65f6\uff0c\u4f1a\u5ffd\u7565\u57fa\u4e8e\u51fd\u6570\u7684\u7d22\u5f15
\n\t12\uff09\u7d22\u5f15\u8868\u8fbe\u5f0f\u4e0d\u80fd\u8c03\u7528\u805a\u5408\u51fd\u6570\uff0c\u5982\uff1asum()<\/p>\n
3.\u865a\u62df\u5217\u4e0a\u7684\u7d22\u5f15
\n\t1\uff09\u53ea\u6709\u5f53\u67d0\u4e2a\u865a\u62df\u5217\u7684\u503c\u5907\u67e5\u8be2\u65f6\uff0c\u624d\u4f1a\u8ba1\u7b97\u8be5\u5217\u7684\u503c
\n\t2\uff09\u865a\u62df\u5217\u51cf\u5c11\u4e86\u89e6\u53d1\u5668\u7684\u4f7f\u7528
\n\t3\uff09\u5728\u865a\u62df\u5217\u4e0a\u521b\u5efa\u7d22\u5f15\uff0c\u5c06\u662f\u57fa\u4e8e\u51fd\u6570\u7684\u7d22\u5f15
\n\t4\uff09\u53ef\u4ee5\u7528\u6dfb\u52a0\u4e00\u4e2a\u865a\u62df\u5217\u5e76\u5bf9\u4ed6\u521b\u5efa\u7d22\u5f15\u7684\u529e\u6cd5\uff0c\u4ee3\u66ff\u5728\u8868\u4e2d\u7684\u4e00\u4e2a\u6216\u8005\u591a\u4e2a\u5217\u4e0a\u521b\u5efa\u57fa\u4e8e\u51fd\u6570\u7684\u7d22\u5f15
\n\t5\uff09\u5982\u679c\u91cd\u65b0\u7f16\u8bd1\u4e86\u51fd\u6570\uff0c\u90a3\u4e48\u5c31\u5fc5\u987b\u91cd\u5efa\u865a\u62df\u5217\u4e0a\u7684\u7d22\u5f15\uff0c\u5728\u91cd\u65b0\u542f\u7528\u865a\u62df\u5217\u4e0a\u7684\u7ea6\u675f\u540e\uff0c\u5fc5\u987b\u91cd\u65b0\u6536\u96c6\u8868\u4e0a\u7684\u7edf\u8ba1\u4fe1\u606f<\/p>\n
4.\u952e\u538b\u7f29\u7d22\u5f15
\n\t1\uff09\u952e\u538b\u7f29\u5141\u8bb8\u5728\u4e00\u4e2a\u7d22\u5f15\u5757\u7684\u540e\u7f00\u6761\u76ee\u5171\u4eab\u524d\u7f00\u6761\u76ee\uff0c\u4ece\u800c\u80fd\u5728\u6bcf\u4e2a\u7d22\u5f15\u5757\u4e2d\u5b58\u50a8\u66f4\u591a\u7684\u952e
\n\t2)11G\u4e2d\uff0c\u65b0\u7684oltp\u8868\u538b\u7f29\u529f\u80fd\u53ef\u4ee5\u5728\u6240\u6709\u7684dml\u4e2d\u542f\u7528\u6570\u636e\u538b\u7f29\uff0c\u53ef\u5728\u5728\u7ebf\u73af\u5883\u4e2d\u4f7f\u7528\uff0coracle\u8bfb\u53d6\u538b\u7f29\u6570\u636e\u65f6\u4e0d\u7528\u89e3\u538b\u4ed6\u4eec\uff0c\u6570\u636e\u5728\u9ad8\u901f\u7f13\u5b58\u4e2d\u4e5f\u4fdd\u6301\u538b\u7f29\u683c\u5f0f\u3002
\n\t3\uff09oracle\u53ea\u538b\u7f29\u7d22\u5f15\u4e2d\u7684\u524d\u5bfc\u5217
\n\t4\uff09\u5728\u590d\u5408\u7d22\u5f15\u4e2d\u786e\u4fdd\u524d\u5bfc\u5217\u662f\u4f4e\u57fa\u6570\u7684\u60c5\u51b5\u4e0b\u4f1a\u4ea7\u751f\u826f\u597d\u7684\u538b\u7f29\u6548\u679c
\n\t5\uff09\u65e0\u8bba\u662f\u524d\u7f00\u503c\u8fd8\u662f\u540e\u7f00\u503c\uff0c\u90fd\u5b58\u50a8\u5728\u76f8\u540c\u7684\u7d22\u5f15\u5757\u4e2d
\n\t6\uff09\u5728\u4f7f\u7528\u9ed8\u8ba4\u952e\u538b\u7f29\u65f6\uff0c\u5c06\u4f1a\u538b\u7f29\u524d\u5bfc\u5217\u4e2d\u7684\u6240\u6709\u5217
\n\t7\uff09compress\u5173\u952e\u5b57\u540e\u8fb9\u7684\u6570\u5b57\uff0c\u544a\u8bc9oracle\u6570\u636e\u5e93\u5e94\u8be5\u538b\u7f29\u591a\u5c11\u5217\u3002\u5728\u975e\u552f\u4e00\u7d22\u5f15\u4e2d\uff0c\u9ed8\u8ba4\u662f\u538b\u7f29\u6240\u6709\u5217\uff1b\u5728\u552f\u4e00\u7d22\u5f15\u4e2d\uff0c\u662f\u538b\u7f29\u603b\u5217\u6570\u51cf1
\n\t8\uff09\u5728\u4efb\u4f55\u65f6\u5019\u90fd\u53ef\u4ee5\u5229\u7528nocompress\u5b50\u53e5\u6765\u91cd\u5efa\u7d22\u5f15\u6765\u7981\u7528\u7d22\u5f15\u952e\u538b\u7f29
\n\t9\uff09\u53ea\u8981\u662fB\u6811\u7d22\u5f15\uff0c\u5c31\u53ef\u4ee5\u7528\u952e\u538b\u7f29\u6765\u538b\u7f29\u4ed6\u7684\u4e00\u4e2a\u6216\u8005\u591a\u4e2a\u5206\u533a
\n\t10\uff09\u952e\u538b\u7f29\u53ef\u4ee5\u51cf\u5c11\u7d22\u5f15\u7684\u53f6\u5757\u6570
\n\t11\uff09\u53ef\u4ee5\u4f7f\u7528\u89c6\u56feindex_stats\u7684opt_cmpr_count\u548copt_cmpr_pctsave\u6765\u4f30\u7b97\u538b\u7f29\u6548\u7387\uff08\u6ce8\u610f\uff0c\u89c6\u56feindex_stats\u5728\u6536\u96c6\u4e86\u6307\u5b9a\u7d22\u5f15\u7684\u7edf\u8ba1\u4fe1\u606f\u540e\u624d\u4f1a\u586b\u5145\u503c\u8fdb\u53bb\uff09<\/p>\n
5.\u590d\u5408\u7d22\u5f15
\n\t1\uff09\u5f53\u67e5\u8be2\u7684where\u5b50\u53e5\u4e2d\u5f15\u7528\u4e86\u7d22\u5f15\u7684\u6240\u6709\u5217\u6216\u8005\u751a\u81f3\u53ea\u662f\u524d\u5bfc\u5217\u65f6\uff0c\u4f18\u5316\u5668\u4f1a\u8003\u8651\u4f7f\u7528\u590d\u5408\u7d22\u5f15
\n\t2\uff09\u5982\u679c\u67e5\u8be2\u4e0d\u5305\u542b\u590d\u5408\u7d22\u5f15\u7684\u524d\u5bfc\u5217\u65f6\uff0c\u4f18\u5316\u5668\u4f1a\u5ffd\u7565\u7d22\u5f15\uff08\u4ee5\u524d\u7684\u7248\u672c\uff09\uff0c\u5728\u4ee5\u540e\u7684\u7248\u672c\u4e2d\uff0c\u5c06\u4f1a\u4f7f\u7528\u7d22\u5f15\u8df3\u8dc3\u5f0f\u626b\u9762\uff0c\u8df3\u8fc7\u524d\u5bfc\u5217\uff08\u6b64\u65f6\u4f7f\u7528\u7684\u662f\u903b\u8f91\u5b50\u7d22\u5f15\uff09\u3002
\n\t3\uff09\u5982\u679c\u7b26\u5408\u7d22\u5f15\u7684\u524d\u5bfc\u5217\u53ea\u6709\u90e8\u5206\u5c11\u91cf\u7684\u4e0d\u540c\u503c\uff0c\u800c\u7d22\u5f15\u7684\u975e\u524d\u5bfc\u90e8\u5206\u5374\u5305\u542b\u4e86\u5927\u91cf\u4e0d\u540c\u7684\u503c\uff0c\u8fd9\u4e2a\u65f6\u5019\u5c31\u975e\u5e38\u9002\u5408\u4f7f\u7528\u8df3\u8dc3\u5f0f\u626b\u63cf
\n\t4\uff09oracle\u5efa\u8bae\u5c06\u8bbf\u95ee\u9891\u7e41\u7684\u5217\u653e\u5728\u7d22\u5f15\u4e2d\u7684\u6700\u9760\u524d\u7684\u4f4d\u7f6e
\n\t5\uff09\u5728\u51b3\u5b9a\u4f7f\u7528\u54ea\u4e00\u4e2a\u5217\u4f5c\u4e3a\u524d\u5bfc\u5217\u65f6\uff0c\u5efa\u8bae\u4f7f\u7528\u805a\u7c07\u56e0\u5b50\u4f5c\u4e3a\u6807\u51c6\uff08\u805a\u7c07\u56e0\u5b50\u8868\u793a\u4e0e\u7d22\u5f15\u6761\u76ee\u4e2d\u7684\u6392\u5217\u65b9\u5f0f\u6bd4\u8f83\uff0c\u8868\u4e2d\u884c\u7684\u6709\u5e8f\u7a0b\u5ea6\uff09<\/p>\n
6.\u865a\u62df\u7d22\u5f15
\n\t1\uff09\u5728\u521b\u5efa\u7d22\u5f15\u65f6\u6307\u5b9anosegment\u5b50\u53e5\u51fa\u6765\u7684\u662f\u865a\u62df\u7d22\u5f15
\n\t2\uff09\u865a\u62df\u7d22\u5f15\u4e0d\u5360\u7528\u4efb\u4f55\u5b58\u50a8\u7a7a\u95f4\uff0c\u5e76\u5728\u9ed8\u8ba4\u60c5\u51b5\u4e0b\u5bf9\u57fa\u4e8e\u6210\u672c\u7684\u4f18\u5316\u5668\u65f6\u4e0d\u53ef\u89c1\u7684
\n\t3\uff09\u5728\u89c6\u56fedba_indexes\u4e2d\u6307\u5b58\u50a8\u6709\u5b9e\u9645\u7d22\u5f15\u6bb5\u7684\u4fe1\u606f\u7684\u7d22\u5f15
\n\t4\uff09\u5728\u5c06\u53c2\u6570 _use_nosegment_indexes\u4e3atrue\u540e\uff0c\u865a\u62df\u7d22\u5f15\u624d\u5bf9\u4f18\u5316\u5668\u53ef\u89c1
\n\t5\uff09\u5728\u6d4b\u8bd5\u4e00\u4e2a\u6f5c\u5728\u7d22\u5f15\u7684\u6709\u6548\u6027\u65f6\uff0c\u5efa\u8bae\u4f7f\u7528\u4e0d\u53ef\u89c1\u7d22\u5f15
\n\t6\uff09\u53ea\u6709\u5728\u884c\u5f04\u6e05\u695a\u5982\u679c\u5efa\u7acb\u4e00\u4e2a\u7d22\u5f15\u4f1a\u53d1\u751f\u4ec0\u4e48\uff0c\u4f46\u53c8\u4e0d\u60f3\u901a\u8fc7\u5b9e\u9645\u7684\u521b\u5efa\u7d22\u5f15\u7684\u673a\u5236\u6765\u6d4b\u8bd5\u65f6\uff0c\u624d\u9002\u5408\u521b\u5efa\u865a\u62df\u7d22\u5f15
\n\t7\uff09\u4e0d\u80fd\u5bf9\u65e0\u6bb5\u7d22\u5f15\u8fdb\u884c\u91cd\u5efa\u548c\u4fee\u6539
\n\t8\uff09\u5728\u521b\u5efa\u65e0\u6bb5\u7d22\u5f15\u7684\u65f6\u5019\u53ea\u662f\u586b\u5145\u4e86\u51e0\u4e2a\u6570\u636e\u5b57\u5178\u800c\u5df2\uff0c\u5e76\u6ca1\u6709\u4e0e\u8be5\u7d22\u5f15\u7684\u7d22\u5f15\u6811\u5b58\u5728
\n\t9\uff09\u521b\u5efa\u65e0\u6bb5\u7d22\u5f15\u53ef\u4ee5\u5728\u6ca1\u6709\u8017\u8d39\u78c1\u76d8\u7a7a\u95f4\u7684\u60c5\u51b5\u4e0b\u6d4b\u8bd5\u7d22\u5f15\u7684\u53ef\u7528\u6027<\/p>\n
7.\u53cd\u5411\u952e\u7d22\u5f15
\n\t1\uff09\u53cd\u5411\u952e\u7d22\u5f15\u9002\u5408\u5728rac\u73af\u5883\u4f7f\u7528
\n\t2\uff09\u5728rac\u73af\u5883\u4e2d\uff0c\u5f53\u5927\u91cf\u5e76\u53d1\u4f1a\u8bdd\u540c\u65f6\u63d2\u5165\u6570\u636e\u5230\u5355\u8c03\u9012\u589e\u7684\u7d22\u5f15\u8282\u70b9\u65f6\uff0c\u4f1a\u5bfc\u81f4\u5bf9\u76f8\u540c\u7d22\u5f15\u5757\u7684\u4e89\u7528
\n\t3\uff09\u53cd\u5411\u952e\u7d22\u5f15\uff0c\u53ea\u662f\u5728\u63d2\u5165\u7d22\u5f15\u6570\u636e\u4e4b\u524d\u53cd\u8f6c\u7d22\u5f15\u5217\u7684\u503c
\n\t4\uff09\u5728rac\u73af\u5883\u4e2d\u4f7f\u7528\u53cd\u8f6c\u952e\u503c\u7d22\u5f15\uff0c\u5f80\u5f80\u4f1a\u52a0\u5feb\u6279\u91cf\u6570\u636e\u52a0\u8f7d\u901f\u5ea6
\n\t5\uff09\u53cd\u8f6c\u952e\u503c\u7d22\u5f15\u53ef\u4ee5\u5927\u5927\u51cf\u7f13\u7f13\u51b2\u533a\u5fd9\u7b49\u5f85
\n\t6\uff09\u4f7f\u7528\u53cd\u8f6c\u952e\u503c\u7d22\u5f15\u65f6\uff0c\u5c31\u4e0d\u80fd\u4f7f\u7528\u8be5\u7d22\u5f15\u7684\u8303\u56f4\u626b\u63cf\uff08\u5982\u8c13\u8bed\u4e3abetween\uff0c<=,<,>,>=\uff09\uff0c\u4f46\u662f\u53ef\u4ee5\u4f7f\u7528\u7d22\u5f15\u5feb\u901f\u5168\u626b\u63cf\uff0c\u4f46\u6709\u8f7b\u5fae\u7684cpu\u5f00\u9500
\n\t7\uff09\u5728\u67e5\u8be2\u6709\u76f8\u7b49\u8c13\u8bcd\u65f6\u624d\u80fd\u4f7f\u7528\u53cd\u5411\u952e\u7d22\u5f15
\n\t8\uff09\u5206\u533a\u7d22\u5f15\u5177\u6709\u591a\u4e2a\u7d22\u5f15\u7684\u6839\u5757\uff0c\u53ef\u4ee5\u51cf\u5c11\u7d22\u5f15\u6839\u5757\u7684\u4e89\u7528
\n\t9\uff09\u53ef\u4ee5\u4f7f\u7528in\u5b50\u53e5\u6765\u4ee3\u66ff\u8c13\u8bcd\u4ee5\u66f2\u7ebf\u4ee3\u66ff\u8303\u56f4\uff0c\u5728oracle\u4e2d\uff0c\u6570\u636e\u5e93\u4f1a\u5c06in\u66ff\u6362\u6210or\uff0c\u800cor\u53ef\u4ee5\u7528\u5230\u53cd\u8f6c\u952e\u503c\u7d22\u5f15
\n\t10\uff09\u5982\u679c\u6267\u884c\u975e\u552f\u4e00\u53cd\u5411\u952e\u7d22\u5f15\u4e0a\u7684\u7b49\u503c\u641c\u7d22\uff0c\u7531\u4e8e\u91cd\u590d\u7684\u503c\u5b58\u50a8\u5728\u7d22\u5f15\u7ed3\u6784\u4e2d\uff0c\u6570\u636e\u5e93\u5c06\u6267\u884c\u7d22\u5f15\u8303\u56f4\u626b\u63cf\uff08\u8fd9\u4e2a\u5176\u5b9e\u5c31\u662f\u56e0\u4e3a\u6709\u91cd\u590d\u503c\u5b58\u5728\uff0c\u4e5f\u5c31\u662f\u5c0f\u8303\u56f4\u7684\u8303\u56f4\u626b\u63cf\uff09
\n\t11\uff09\u6563\u5217\u5206\u533a\u5168\u5c40\u7d22\u5f15\u53ef\u4ee5\u901a\u8fc7\u5206\u6563\u63d2\u5165\u63d0\u9ad8\u63d2\u5165\u6027\u80fd
\n\t12\uff09\u5728rac\u4e2d\u5efa\u8bae\u4f7f\u7528noorder\u548ccache\uff08\u4e00\u822c\u662f\u589e\u5927\u7f13\u51b2\u5927\u5c0f\uff09\u9009\u9879\u6765\u521b\u5efa\u5e8f\u5217\uff0c\u4ee5\u51cf\u5c11\u7d22\u5f15\u4e89\u7528
\n\t13\uff09\u5728\u7d22\u5f15\u5757\u9762\u4e34\u4e89\u7528\u65f6\uff0c\u5c06\u51fa\u73b0buffer busy\u548cread by other session\u7b49\u5f85\u4e8b\u4ef6\uff0c\u8fdb\u800c\u4f1a\u51fa\u73b0high buffer busy waits\u7b49\u5f85\u4e8b\u4ef6
\n\t14\uff09\u5728\u521b\u5efa\u53cd\u8f6c\u952e\u503c\u7d22\u5f15\u65f6\u53ea\u662f\u5728\u4e00\u822c\u7684\u521b\u5efa\u8bed\u53e5\u540e\u52a0\u4e0a\u5173\u952e\u5b57reverse
\n\t15\uff09\u666e\u901a\u7d22\u5f15\u548c\u53cd\u8f6c\u952e\u503c\u7d22\u5f15\u53ef\u4ee5\u901a\u8fc7\u91cd\u5efa\u5728\u4e8c\u8005\u4e4b\u95f4\u8fdb\u884c\u5207\u6362<\/p>\n
8.\u5e94\u7528\u57df\u7d22\u5f15
\n\t\u5e94\u7528\u57df\u7d22\u5f15\u652f\u6301\u521b\u5efa\u81ea\u5df1\u7684\u7d22\u5f15\u7ed3\u6784\uff0c\u4ee5\u5b9e\u73b0\u76ee\u524doracle\u6570\u636e\u5e93\u4e2d\u6ca1\u6709\u7684\u65b0\u7684\u7d22\u5f15\u7c7b\u578b<\/p>\n","protected":false},"excerpt":{"rendered":"
\u7d22\u5f15\u5b66\u4e60-\u5176\u4ed6\u7d22\u5f15\u7c7b\u578b 1.\u4e0d\u53ef\u89c1\u7d22\u5f15 1\uff09\u201c\u4e0d\u53ef\u89c1\u201d\u7d22\u5f15\u53ef\u4ee5\u5bf9\u4f18\u5316\u5668\u9690\u85cf\u8be5\u7d22\u5f15 2\uff09\u5176\u6700\u5927\u7684\u7528\u9014\u662f\u6d4b\u8bd5\u662f\u5426\u5e94 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[87],"tags":[154,149,156,150,152,153,151,155],"_links":{"self":[{"href":"http:\/\/www.yallonking.com\/index.php?rest_route=\/wp\/v2\/posts\/770"}],"collection":[{"href":"http:\/\/www.yallonking.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.yallonking.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.yallonking.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.yallonking.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=770"}],"version-history":[{"count":1,"href":"http:\/\/www.yallonking.com\/index.php?rest_route=\/wp\/v2\/posts\/770\/revisions"}],"predecessor-version":[{"id":771,"href":"http:\/\/www.yallonking.com\/index.php?rest_route=\/wp\/v2\/posts\/770\/revisions\/771"}],"wp:attachment":[{"href":"http:\/\/www.yallonking.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=770"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.yallonking.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=770"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.yallonking.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=770"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}