{"id":95682,"date":"2024-10-20T03:06:21","date_gmt":"2024-10-19T19:06:21","guid":{"rendered":"https:\/\/server.hk\/cnblog\/95682\/"},"modified":"2024-10-20T03:06:22","modified_gmt":"2024-10-19T19:06:22","slug":"oracle%e6%95%b8%e6%93%9a%e5%ba%ab%e7%ae%a1%e7%90%86%e6%8a%80%e7%9a%84%e7%a4%ba%e4%be%8b","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/95682\/","title":{"rendered":"Oracle\u6578\u64da\u5eab\u7ba1\u7406\u6280\u7684\u793a\u4f8b"},"content":{"rendered":"<h1 id=\"oracle%e6%95%b8%e6%93%9a%e5%ba%ab%e7%ae%a1%e7%90%86%e6%8a%80%e7%9a%84%e7%a4%ba%e4%be%8b-edKAJavQpX\">Oracle\u6578\u64da\u5eab\u7ba1\u7406\u6280\u7684\u793a\u4f8b<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u6578\u64da\u9a45\u52d5\u4e16\u754c\u4e2d\uff0c\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff08DBMS\uff09\u626e\u6f14\u8457\u81f3\u95dc\u91cd\u8981\u7684\u89d2\u8272\u3002Oracle\u6578\u64da\u5eab\u4f5c\u70ba\u5e02\u5834\u4e0a\u6700\u53d7\u6b61\u8fce\u7684\u6578\u64da\u5eab\u4e4b\u4e00\uff0c\u63d0\u4f9b\u4e86\u5f37\u5927\u7684\u529f\u80fd\u548c\u9748\u6d3b\u6027\uff0c\u9069\u7528\u65bc\u5404\u7a2e\u61c9\u7528\u5834\u666f\u3002\u672c\u6587\u5c07\u63a2\u8a0eOracle\u6578\u64da\u5eab\u7ba1\u7406\u6280\u8853\u7684\u5e7e\u500b\u793a\u4f8b\uff0c\u5e6b\u52a9\u8b80\u8005\u66f4\u597d\u5730\u7406\u89e3\u5176\u61c9\u7528\u548c\u512a\u52e2\u3002<\/p>\n<h2 id=\"1-oracle%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e6%9e%b6%e6%a7%8b-edKAJavQpX\">1. Oracle\u6578\u64da\u5eab\u7684\u67b6\u69cb<\/h2>\n<p>Oracle\u6578\u64da\u5eab\u7684\u67b6\u69cb\u7531\u591a\u500b\u7d44\u4ef6\u7d44\u6210\uff0c\u5305\u62ec\u6578\u64da\u6587\u4ef6\u3001\u63a7\u5236\u6587\u4ef6\u548c\u65e5\u8a8c\u6587\u4ef6\u3002\u9019\u4e9b\u7d44\u4ef6\u5171\u540c\u5de5\u4f5c\uff0c\u4ee5\u78ba\u4fdd\u6578\u64da\u7684\u5b8c\u6574\u6027\u548c\u53ef\u7528\u6027\u3002<\/p>\n<ul>\n<li><strong>\u6578\u64da\u6587\u4ef6\uff1a<\/strong>\u5b58\u5132\u5be6\u969b\u7684\u6578\u64da\u548c\u6578\u64da\u7d50\u69cb\u3002<\/li>\n<li><strong>\u63a7\u5236\u6587\u4ef6\uff1a<\/strong>\u5305\u542b\u6578\u64da\u5eab\u7684\u7d50\u69cb\u4fe1\u606f\uff0c\u5982\u6578\u64da\u6587\u4ef6\u7684\u4f4d\u7f6e\u548c\u72c0\u614b\u3002<\/li>\n<li><strong>\u65e5\u8a8c\u6587\u4ef6\uff1a<\/strong>\u8a18\u9304\u6240\u6709\u5c0d\u6578\u64da\u5eab\u7684\u66f4\u6539\uff0c\u4ee5\u4fbf\u5728\u6545\u969c\u6642\u9032\u884c\u6062\u5fa9\u3002<\/li>\n<\/ul>\n<h2 id=\"2-%e6%95%b8%e6%93%9a%e5%ba%ab%e7%ae%a1%e7%90%86%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%93%8d%e4%bd%9c-edKAJavQpX\">2. \u6578\u64da\u5eab\u7ba1\u7406\u7684\u57fa\u672c\u64cd\u4f5c<\/h2>\n<p>\u5728Oracle\u6578\u64da\u5eab\u4e2d\uff0c\u6578\u64da\u5eab\u7ba1\u7406\u7684\u57fa\u672c\u64cd\u4f5c\u5305\u62ec\u5275\u5efa\u3001\u67e5\u8a62\u3001\u66f4\u65b0\u548c\u522a\u9664\u6578\u64da\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684SQL\u8a9e\u53e5\u793a\u4f8b\uff1a<\/p>\n<h3 id=\"2-1-%e5%89%b5%e5%bb%ba%e8%a1%a8-edKAJavQpX\">2.1 \u5275\u5efa\u8868<\/h3>\n<pre><code>CREATE TABLE employees (\n    employee_id NUMBER PRIMARY KEY,\n    first_name VARCHAR2(50),\n    last_name VARCHAR2(50),\n    hire_date DATE\n);<\/code><\/pre>\n<h3 id=\"2-2-%e6%8f%92%e5%85%a5%e6%95%b8%e6%93%9a-edKAJavQpX\">2.2 \u63d2\u5165\u6578\u64da<\/h3>\n<pre><code>INSERT INTO employees (employee_id, first_name, last_name, hire_date)\nVALUES (1, 'John', 'Doe', TO_DATE('2023-01-01', 'YYYY-MM-DD'));<\/code><\/pre>\n<h3 id=\"2-3-%e6%9f%a5%e8%a9%a2%e6%95%b8%e6%93%9a-edKAJavQpX\">2.3 \u67e5\u8a62\u6578\u64da<\/h3>\n<pre><code>SELECT * FROM employees WHERE hire_date &gt; TO_DATE('2022-01-01', 'YYYY-MM-DD');<\/code><\/pre>\n<h3 id=\"2-4-%e6%9b%b4%e6%96%b0%e6%95%b8%e6%93%9a-edKAJavQpX\">2.4 \u66f4\u65b0\u6578\u64da<\/h3>\n<pre><code>UPDATE employees SET last_name = 'Smith' WHERE employee_id = 1;<\/code><\/pre>\n<h3 id=\"2-5-%e5%88%aa%e9%99%a4%e6%95%b8%e6%93%9a-edKAJavQpX\">2.5 \u522a\u9664\u6578\u64da<\/h3>\n<pre><code>DELETE FROM employees WHERE employee_id = 1;<\/code><\/pre>\n<h2 id=\"3-%e6%95%b8%e6%93%9a%e5%ba%ab%e5%82%99%e4%bb%bd%e8%88%87%e6%81%a2%e5%be%a9-edKAJavQpX\">3. \u6578\u64da\u5eab\u5099\u4efd\u8207\u6062\u5fa9<\/h2>\n<p>\u6578\u64da\u5eab\u7684\u5099\u4efd\u8207\u6062\u5fa9\u662f\u78ba\u4fdd\u6578\u64da\u5b89\u5168\u7684\u91cd\u8981\u63aa\u65bd\u3002Oracle\u63d0\u4f9b\u4e86\u591a\u7a2e\u5099\u4efd\u9078\u9805\uff0c\u5305\u62ec\u5168\u5099\u4efd\u548c\u589e\u91cf\u5099\u4efd\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528RMAN\uff08Recovery Manager\uff09\u9032\u884c\u5099\u4efd\u7684\u57fa\u672c\u793a\u4f8b\uff1a<\/p>\n<pre><code>RMAN&gt; BACKUP DATABASE;<\/code><\/pre>\n<p>\u5728\u767c\u751f\u6545\u969c\u6642\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u9032\u884c\u6062\u5fa9\uff1a<\/p>\n<pre><code>RMAN&gt; RESTORE DATABASE;<\/code><\/pre>\n<h2 id=\"4-%e6%80%a7%e8%83%bd%e5%84%aa%e5%8c%96%e6%8a%80%e8%a1%93-edKAJavQpX\">4. \u6027\u80fd\u512a\u5316\u6280\u8853<\/h2>\n<p>\u70ba\u4e86\u63d0\u9ad8Oracle\u6578\u64da\u5eab\u7684\u6027\u80fd\uff0c\u7ba1\u7406\u54e1\u53ef\u4ee5\u63a1\u53d6\u591a\u7a2e\u512a\u5316\u6280\u8853\uff0c\u5305\u62ec\u7d22\u5f15\u3001\u67e5\u8a62\u512a\u5316\u548c\u8cc7\u6e90\u7ba1\u7406\u3002<\/p>\n<h3 id=\"4-1-%e5%89%b5%e5%bb%ba%e7%b4%a2%e5%bc%95-edKAJavQpX\">4.1 \u5275\u5efa\u7d22\u5f15<\/h3>\n<pre><code>CREATE INDEX idx_last_name ON employees(last_name);<\/code><\/pre>\n<h3 id=\"4-2-%e6%9f%a5%e8%a9%a2%e5%84%aa%e5%8c%96-edKAJavQpX\">4.2 \u67e5\u8a62\u512a\u5316<\/h3>\n<p>\u4f7f\u7528EXPLAIN PLAN\u547d\u4ee4\u53ef\u4ee5\u5206\u6790\u67e5\u8a62\u7684\u57f7\u884c\u8a08\u5283\uff0c\u5e6b\u52a9\u8b58\u5225\u6027\u80fd\u74f6\u9838\uff1a<\/p>\n<pre><code>EXPLAIN PLAN FOR\nSELECT * FROM employees WHERE last_name = 'Doe';<\/code><\/pre>\n<h2 id=\"5-%e5%ae%89%e5%85%a8%e6%80%a7%e7%ae%a1%e7%90%86-edKAJavQpX\">5. \u5b89\u5168\u6027\u7ba1\u7406<\/h2>\n<p>Oracle\u6578\u64da\u5eab\u63d0\u4f9b\u4e86\u591a\u5c64\u6b21\u7684\u5b89\u5168\u6027\u7ba1\u7406\u529f\u80fd\uff0c\u5305\u62ec\u7528\u6236\u7ba1\u7406\u3001\u6b0a\u9650\u63a7\u5236\u548c\u6578\u64da\u52a0\u5bc6\u3002\u4ee5\u4e0b\u662f\u5275\u5efa\u7528\u6236\u548c\u6388\u4e88\u6b0a\u9650\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>CREATE USER new_user IDENTIFIED BY password;\nGRANT SELECT, INSERT ON employees TO new_user;<\/code><\/pre>\n<h2 id=\"%e7%b8%bd%e7%b5%90-edKAJavQpX\">\u7e3d\u7d50<\/h2>\n<p>Oracle\u6578\u64da\u5eab\u7ba1\u7406\u6280\u8853\u6db5\u84cb\u4e86\u5f9e\u57fa\u672c\u64cd\u4f5c\u5230\u9ad8\u7d1a\u6027\u80fd\u512a\u5316\u7684\u591a\u500b\u65b9\u9762\u3002\u901a\u904e\u638c\u63e1\u9019\u4e9b\u6280\u8853\uff0c\u6578\u64da\u5eab\u7ba1\u7406\u54e1\u53ef\u4ee5\u6709\u6548\u5730\u7ba1\u7406\u548c\u4fdd\u8b77\u6578\u64da\uff0c\u78ba\u4fdd\u7cfb\u7d71\u7684\u7a69\u5b9a\u6027\u548c\u5b89\u5168\u6027\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u7ba1\u7406\u7684\u4f01\u696d\u4f86\u8aaa\uff0c\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\u81f3\u95dc\u91cd\u8981\u3002\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u53ef\u9760\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u670d\u52d9\u4f86\u652f\u6301\u60a8\u7684Oracle\u6578\u64da\u5eab\uff0cServer.HK\u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\u4ee5\u6eff\u8db3\u60a8\u7684\u9700\u6c42\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22Oracle\u6578\u64da\u5eab\u7ba1\u7406\u6280\u8853\u7684\u793a\u4f8b\uff0c\u63d0\u5347\u6578\u64da\u8655\u7406\u6548\u7387\uff0c\u78ba\u4fdd\u5b89\u5168\u6027\u8207\u53ef\u9760\u6027\uff0c\u52a9\u529b\u4f01\u696d\u6578\u64da\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-95682","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/95682","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=95682"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/95682\/revisions"}],"predecessor-version":[{"id":95683,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/95682\/revisions\/95683"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=95682"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=95682"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=95682"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}