{"id":96222,"date":"2024-10-20T07:37:22","date_gmt":"2024-10-19T23:37:22","guid":{"rendered":"https:\/\/server.hk\/cnblog\/96222\/"},"modified":"2024-10-20T07:37:23","modified_gmt":"2024-10-19T23:37:23","slug":"oracle%e5%84%aa%e5%8c%96%e5%99%a8%e4%ba%8c%e5%8d%81%e5%85%ad%e5%80%8b%e5%8f%83%e6%95%b8","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/96222\/","title":{"rendered":"Oracle\u512a\u5316\u5668\u4e8c\u5341\u516d\u500b\u53c3\u6578"},"content":{"rendered":"<h1 id=\"oracle%e5%84%aa%e5%8c%96%e5%99%a8%e4%ba%8c%e5%8d%81%e5%85%ad%e5%80%8b%e5%8f%83%e6%95%b8-bomkzLxmih\">Oracle\u512a\u5316\u5668\u4e8c\u5341\u516d\u500b\u53c3\u6578<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0cOracle\u7684\u512a\u5316\u5668\u626e\u6f14\u8457\u81f3\u95dc\u91cd\u8981\u7684\u89d2\u8272\u3002\u5b83\u8ca0\u8cac\u6c7a\u5b9a\u6700\u4f73\u7684\u67e5\u8a62\u57f7\u884c\u8a08\u5283\uff0c\u4ee5\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u3002Oracle\u512a\u5316\u5668\u7684\u884c\u70ba\u53ef\u4ee5\u901a\u904e\u591a\u500b\u53c3\u6578\u9032\u884c\u8abf\u6574\uff0c\u9019\u4e9b\u53c3\u6578\u5f71\u97ff\u8457\u67e5\u8a62\u7684\u57f7\u884c\u65b9\u5f0f\u548c\u6548\u7387\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0eOracle\u512a\u5316\u5668\u7684\u4e8c\u5341\u516d\u500b\u4e3b\u8981\u53c3\u6578\uff0c\u5e6b\u52a9\u6578\u64da\u5eab\u7ba1\u7406\u54e1\u66f4\u597d\u5730\u7406\u89e3\u548c\u512a\u5316\u67e5\u8a62\u6027\u80fd\u3002<\/p>\n<h2>1. <code>optimizer_mode<\/code><\/h2>\n<p>\u6b64\u53c3\u6578\u6c7a\u5b9a\u4e86\u512a\u5316\u5668\u7684\u904b\u884c\u6a21\u5f0f\u3002\u53ef\u9078\u503c\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><code>ALL_ROWS<\/code>\uff1a\u512a\u5316\u6574\u9ad4\u67e5\u8a62\u6027\u80fd\u3002<\/li>\n<li><code>FIRST_ROWS<\/code>\uff1a\u512a\u5316\u9996\u884c\u8fd4\u56de\u901f\u5ea6\u3002<\/li>\n<li><code>RULE<\/code>\uff1a\u4f7f\u7528\u820a\u7248\u7684\u898f\u5247\u512a\u5316\u5668\u3002<\/li>\n<\/ul>\n<h2>2. <code>optimizer_index_cost_adj<\/code><\/h2>\n<p>\u6b64\u53c3\u6578\u7528\u65bc\u8abf\u6574\u7d22\u5f15\u7684\u6210\u672c\u4f30\u7b97\u3002\u9ed8\u8a8d\u503c\u70ba100\uff0c\u589e\u52a0\u6b64\u503c\u6703\u4f7f\u512a\u5316\u5668\u66f4\u50be\u5411\u65bc\u4f7f\u7528\u5168\u8868\u6383\u63cf\u800c\u975e\u7d22\u5f15\u3002<\/p>\n<h2>3. <code>optimizer_index_caching<\/code><\/h2>\n<p>\u6b64\u53c3\u6578\u7528\u65bc\u8abf\u6574\u512a\u5316\u5668\u5c0d\u7d22\u5f15\u7de9\u5b58\u7684\u9810\u6e2c\u3002\u503c\u7bc4\u570d\u5f9e0\u5230100\uff0c\u8d8a\u9ad8\u8868\u793a\u9810\u6e2c\u7684\u7de9\u5b58\u547d\u4e2d\u7387\u8d8a\u9ad8\u3002<\/p>\n<h2>4. <code>db_file_multiblock_read_count<\/code><\/h2>\n<p>\u6b64\u53c3\u6578\u5b9a\u7fa9\u4e86\u5728\u5168\u8868\u6383\u63cf\u6642\uff0cOracle\u4e00\u6b21\u53ef\u4ee5\u8b80\u53d6\u7684\u6578\u64da\u584a\u6578\u91cf\u3002\u589e\u52a0\u6b64\u503c\u53ef\u4ee5\u63d0\u9ad8\u5168\u8868\u6383\u63cf\u7684\u6027\u80fd\u3002<\/p>\n<h2>5. <code>hash_area_size<\/code><\/h2>\n<p>\u6b64\u53c3\u6578\u5b9a\u7fa9\u4e86\u54c8\u5e0c\u64cd\u4f5c\u7684\u5167\u5b58\u5927\u5c0f\u3002\u9069\u7576\u8abf\u6574\u6b64\u503c\u53ef\u4ee5\u63d0\u9ad8\u54c8\u5e0c\u9023\u63a5\u7684\u6027\u80fd\u3002<\/p>\n<h2>6. <code>pga_aggregate_target<\/code><\/h2>\n<p>\u6b64\u53c3\u6578\u5b9a\u7fa9\u4e86\u6574\u500b\u5be6\u4f8b\u7684PGA\uff08\u7a0b\u5e8f\u5168\u5c40\u5340\uff09\u5167\u5b58\u5927\u5c0f\u3002\u5408\u7406\u914d\u7f6e\u53ef\u4ee5\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u3002<\/p>\n<h2>7. <code>workarea_size_policy<\/code><\/h2>\n<p>\u6b64\u53c3\u6578\u6c7a\u5b9a\u4e86\u5de5\u4f5c\u5340\u7684\u5927\u5c0f\u7b56\u7565\u3002\u53ef\u9078\u503c\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><code>AUTO<\/code>\uff1a\u81ea\u52d5\u7ba1\u7406\u5de5\u4f5c\u5340\u5927\u5c0f\u3002<\/li>\n<li><code>MANUAL<\/code>\uff1a\u624b\u52d5\u8a2d\u7f6e\u5de5\u4f5c\u5340\u5927\u5c0f\u3002<\/li>\n<\/ul>\n<h2>8. <code>optimizer_secure_view_merging<\/code><\/h2>\n<p>\u6b64\u53c3\u6578\u63a7\u5236\u5b89\u5168\u8996\u5716\u7684\u5408\u4f75\u884c\u70ba\u3002\u8a2d\u7f6e\u70ba<code>TRUE<\/code>\u6642\uff0c\u512a\u5316\u5668\u6703\u5617\u8a66\u5408\u4f75\u5b89\u5168\u8996\u5716\u3002<\/p>\n<h2>9. <code>optimizer_adaptive_features<\/code><\/h2>\n<p>\u6b64\u53c3\u6578\u555f\u7528\u81ea\u9069\u61c9\u512a\u5316\u529f\u80fd\uff0c\u5141\u8a31\u512a\u5316\u5668\u6839\u64da\u57f7\u884c\u6642\u7684\u7d71\u8a08\u4fe1\u606f\u8abf\u6574\u57f7\u884c\u8a08\u5283\u3002<\/p>\n<h2>10. <code>optimizer_dynamic_sampling<\/code><\/h2>\n<p>\u6b64\u53c3\u6578\u63a7\u5236\u52d5\u614b\u53d6\u6a23\u7684\u7d1a\u5225\u3002\u53d6\u6a23\u8d8a\u591a\uff0c\u67e5\u8a62\u8a08\u5283\u7684\u6e96\u78ba\u6027\u8d8a\u9ad8\uff0c\u4f46\u4e5f\u6703\u589e\u52a0\u958b\u92b7\u3002<\/p>\n<h2>11. <code>optimizer_use_sql_plan_baselines<\/code><\/h2>\n<p>\u6b64\u53c3\u6578\u6c7a\u5b9a\u662f\u5426\u4f7f\u7528SQL\u8a08\u5283\u57fa\u7dda\u4f86\u512a\u5316\u67e5\u8a62\u3002\u8a2d\u7f6e\u70ba<code>TRUE<\/code>\u6642\uff0c\u512a\u5316\u5668\u6703\u8003\u616e\u57fa\u7dda\u4e2d\u7684\u8a08\u5283\u3002<\/p>\n<h2>12. <code>optimizer_ignore_hints<\/code><\/h2>\n<p>\u6b64\u53c3\u6578\u63a7\u5236\u512a\u5316\u5668\u662f\u5426\u5ffd\u7565\u63d0\u793a\u3002\u8a2d\u7f6e\u70ba<code>TRUE<\/code>\u6642\uff0c\u512a\u5316\u5668\u5c07\u4e0d\u8003\u616e\u67e5\u8a62\u4e2d\u7684\u63d0\u793a\u3002<\/p>\n<h2>13. <code>optimizer_mode<\/code><\/h2>\n<p>\u6b64\u53c3\u6578\u6c7a\u5b9a\u512a\u5316\u5668\u7684\u904b\u884c\u6a21\u5f0f\uff0c\u5f71\u97ff\u67e5\u8a62\u7684\u57f7\u884c\u8a08\u5283\u9078\u64c7\u3002<\/p>\n<h2>14. <code>enable_nest_loop<\/code><\/h2>\n<p>\u6b64\u53c3\u6578\u63a7\u5236\u662f\u5426\u555f\u7528\u5d4c\u5957\u5faa\u74b0\u9023\u63a5\u3002\u8a2d\u7f6e\u70ba<code>TRUE<\/code>\u6642\uff0c\u512a\u5316\u5668\u6703\u8003\u616e\u4f7f\u7528\u5d4c\u5957\u5faa\u74b0\u3002<\/p>\n<h2>15. <code>enable_hash_join<\/code><\/h2>\n<p>\u6b64\u53c3\u6578\u63a7\u5236\u662f\u5426\u555f\u7528\u54c8\u5e0c\u9023\u63a5\u3002\u8a2d\u7f6e\u70ba<code>TRUE<\/code>\u6642\uff0c\u512a\u5316\u5668\u6703\u8003\u616e\u4f7f\u7528\u54c8\u5e0c\u9023\u63a5\u3002<\/p>\n<h2>16. <code>enable_merge_join<\/code><\/h2>\n<p>\u6b64\u53c3\u6578\u63a7\u5236\u662f\u5426\u555f\u7528\u5408\u4f75\u9023\u63a5\u3002\u8a2d\u7f6e\u70ba<code>TRUE<\/code>\u6642\uff0c\u512a\u5316\u5668\u6703\u8003\u616e\u4f7f\u7528\u5408\u4f75\u9023\u63a5\u3002<\/p>\n<h2>17. <code>optimizer_use_statistics<\/code><\/h2>\n<p>\u6b64\u53c3\u6578\u6c7a\u5b9a\u512a\u5316\u5668\u662f\u5426\u4f7f\u7528\u7d71\u8a08\u4fe1\u606f\u4f86\u751f\u6210\u57f7\u884c\u8a08\u5283\u3002\u8a2d\u7f6e\u70ba<code>TRUE<\/code>\u6642\uff0c\u512a\u5316\u5668\u6703\u8003\u616e\u7d71\u8a08\u4fe1\u606f\u3002<\/p>\n<h2>18. <code>optimizer_max_permutations<\/code><\/h2>\n<p>\u6b64\u53c3\u6578\u5b9a\u7fa9\u4e86\u512a\u5316\u5668\u5728\u751f\u6210\u57f7\u884c\u8a08\u5283\u6642\u7684\u6700\u5927\u6392\u5217\u6578\u3002\u904e\u9ad8\u7684\u503c\u53ef\u80fd\u5c0e\u81f4\u6027\u80fd\u4e0b\u964d\u3002<\/p>\n<h2>19. <code>optimizer_cost_based_transformation<\/code><\/h2>\n<p>\u6b64\u53c3\u6578\u63a7\u5236\u662f\u5426\u555f\u7528\u57fa\u65bc\u6210\u672c\u7684\u8f49\u63db\u3002\u8a2d\u7f6e\u70ba<code>TRUE<\/code>\u6642\uff0c\u512a\u5316\u5668\u6703\u8003\u616e\u57fa\u65bc\u6210\u672c\u7684\u8f49\u63db\u3002<\/p>\n<h2>20. <code>optimizer_use_sql_plan_baselines<\/code><\/h2>\n<p>\u6b64\u53c3\u6578\u6c7a\u5b9a\u662f\u5426\u4f7f\u7528SQL\u8a08\u5283\u57fa\u7dda\u4f86\u512a\u5316\u67e5\u8a62\u3002\u8a2d\u7f6e\u70ba<code>TRUE<\/code>\u6642\uff0c\u512a\u5316\u5668\u6703\u8003\u616e\u57fa\u7dda\u4e2d\u7684\u8a08\u5283\u3002<\/p>\n<h2>21. <code>optimizer_adaptive_plans<\/code><\/h2>\n<p>\u6b64\u53c3\u6578\u555f\u7528\u81ea\u9069\u61c9\u8a08\u5283\u529f\u80fd\uff0c\u5141\u8a31\u512a\u5316\u5668\u6839\u64da\u57f7\u884c\u6642\u7684\u7d71\u8a08\u4fe1\u606f\u8abf\u6574\u57f7\u884c\u8a08\u5283\u3002<\/p>\n<h2>22. <code>optimizer_adaptive_join<\/code><\/h2>\n<p>\u6b64\u53c3\u6578\u63a7\u5236\u81ea\u9069\u61c9\u9023\u63a5\u7684\u884c\u70ba\u3002\u8a2d\u7f6e\u70ba<code>TRUE<\/code>\u6642\uff0c\u512a\u5316\u5668\u6703\u6839\u64da\u57f7\u884c\u6642\u7684\u60c5\u6cc1\u8abf\u6574\u9023\u63a5\u65b9\u5f0f\u3002<\/p>\n<h2>23. <code>optimizer_use_statistics<\/code><\/h2>\n<p>\u6b64\u53c3\u6578\u6c7a\u5b9a\u512a\u5316\u5668\u662f\u5426\u4f7f\u7528\u7d71\u8a08\u4fe1\u606f\u4f86\u751f\u6210\u57f7\u884c\u8a08\u5283\u3002\u8a2d\u7f6e\u70ba<code>TRUE<\/code>\u6642\uff0c\u512a\u5316\u5668\u6703\u8003\u616e\u7d71\u8a08\u4fe1\u606f\u3002<\/p>\n<h2>24. <code>optimizer_dynamic_sampling<\/code><\/h2>\n<p>\u6b64\u53c3\u6578\u63a7\u5236\u52d5\u614b\u53d6\u6a23\u7684\u7d1a\u5225\u3002\u53d6\u6a23\u8d8a\u591a\uff0c\u67e5\u8a62\u8a08\u5283\u7684\u6e96\u78ba\u6027\u8d8a\u9ad8\uff0c\u4f46\u4e5f\u6703\u589e\u52a0\u958b\u92b7\u3002<\/p>\n<h2>25. <code>optimizer_secure_view_merging<\/code><\/h2>\n<p>\u6b64\u53c3\u6578\u63a7\u5236\u5b89\u5168\u8996\u5716\u7684\u5408\u4f75\u884c\u70ba\u3002\u8a2d\u7f6e\u70ba<code>TRUE<\/code>\u6642\uff0c\u512a\u5316\u5668\u6703\u5617\u8a66\u5408\u4f75\u5b89\u5168\u8996\u5716\u3002<\/p>\n<h2>26. <code>optimizer_index_cost_adj<\/code><\/h2>\n<p>\u6b64\u53c3\u6578\u7528\u65bc\u8abf\u6574\u7d22\u5f15\u7684\u6210\u672c\u4f30\u7b97\u3002\u9ed8\u8a8d\u503c\u70ba100\uff0c\u589e\u52a0\u6b64\u503c\u6703\u4f7f\u512a\u5316\u5668\u66f4\u50be\u5411\u65bc\u4f7f\u7528\u5168\u8868\u6383\u63cf\u800c\u975e\u7d22\u5f15\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-bomkzLxmih\">\u7e3d\u7d50<\/h2>\n<p>\u4e86\u89e3\u548c\u8abf\u6574Oracle\u512a\u5316\u5668\u7684\u4e8c\u5341\u516d\u500b\u53c3\u6578\u5c0d\u65bc\u63d0\u5347\u6578\u64da\u5eab\u6027\u80fd\u81f3\u95dc\u91cd\u8981\u3002\u901a\u904e\u5408\u7406\u914d\u7f6e\u9019\u4e9b\u53c3\u6578\uff0c\u6578\u64da\u5eab\u7ba1\u7406\u54e1\u53ef\u4ee5\u986f\u8457\u6539\u5584\u67e5\u8a62\u7684\u57f7\u884c\u6548\u7387\uff0c\u5f9e\u800c\u63d0\u9ad8\u6574\u9ad4\u7cfb\u7d71\u7684\u6027\u80fd\u3002\u5982\u679c\u60a8\u9700\u8981\u9032\u4e00\u6b65\u7684\u652f\u6301\u6216\u89e3\u6c7a\u65b9\u6848\uff0c\u8acb\u8003\u616e\u6211\u5011\u7684<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u670d\u52d9\uff0c\u70ba\u60a8\u7684\u6578\u64da\u5eab\u63d0\u4f9b\u7a69\u5b9a\u7684\u904b\u884c\u74b0\u5883\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22Oracle\u512a\u5316\u5668\u7684\u4e8c\u5341\u516d\u500b\u95dc\u9375\u53c3\u6578\uff0c\u63d0\u5347\u67e5\u8a62\u6027\u80fd\uff0c\u512a\u5316\u6578\u64da\u5eab\u6548\u7387\uff0c\u5be6\u73fe\u6700\u4f73\u5316\u7ba1\u7406\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-96222","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/96222","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=96222"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/96222\/revisions"}],"predecessor-version":[{"id":96223,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/96222\/revisions\/96223"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=96222"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=96222"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=96222"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}