{"id":12865,"date":"2024-03-14T16:45:11","date_gmt":"2024-03-14T16:45:11","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/how-can-you-retrieve-data-from-an-oracle-database-using-python\/"},"modified":"2025-08-05T08:01:43","modified_gmt":"2025-08-05T08:01:43","slug":"how-can-you-retrieve-data-from-an-oracle-database-using-python","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/how-can-you-retrieve-data-from-an-oracle-database-using-python\/","title":{"rendered":"Python Oracle Database: Retrieve Data Guide"},"content":{"rendered":"<p>To retrieve data from an Oracle database, you can use the cx_Oracle module in Python.<\/p>\n<p>Firstly, make sure that the cx_Oracle module has been installed. You can install it using the following command:<\/p>\n<pre class=\"post-pre\"><code>pip install cx_Oracle\r\n<\/code><\/pre>\n<p>Next, use the following code example to retrieve data from an Oracle database:<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">import<\/span> cx_Oracle\r\n\r\n<span class=\"hljs-comment\"># \u5efa\u7acb\u4e0e\u6570\u636e\u5e93\u7684\u8fde\u63a5<\/span>\r\nconn = cx_Oracle.connect(<span class=\"hljs-string\">'username\/password@host:port\/service_name'<\/span>)\r\n\r\n<span class=\"hljs-comment\"># \u521b\u5efa\u6e38\u6807\u5bf9\u8c61<\/span>\r\ncursor = conn.cursor()\r\n\r\n<span class=\"hljs-comment\"># \u6267\u884cSQL\u67e5\u8be2\u8bed\u53e5<\/span>\r\ncursor.execute(<span class=\"hljs-string\">'SELECT * FROM table_name'<\/span>)\r\n\r\n<span class=\"hljs-comment\"># \u83b7\u53d6\u67e5\u8be2\u7ed3\u679c<\/span>\r\nresult = cursor.fetchall()\r\n\r\n<span class=\"hljs-comment\"># \u904d\u5386\u7ed3\u679c\u5e76\u6253\u5370<\/span>\r\n<span class=\"hljs-keyword\">for<\/span> row <span class=\"hljs-keyword\">in<\/span> result:\r\n    <span class=\"hljs-built_in\">print<\/span>(row)\r\n\r\n<span class=\"hljs-comment\"># \u5173\u95ed\u6e38\u6807\u548c\u8fde\u63a5<\/span>\r\ncursor.close()\r\nconn.close()\r\n<\/code><\/pre>\n<p>In the code, actual database connection information should be substituted for username, password, host, port, and service_name. The table_name should be replaced with the actual table name.<\/p>\n<p>The fetchall() method is used to retrieve all query results and returns a list containing all rows. Alternatively, the fetchone() method can be used to retrieve one row of results, or the fetchmany(size) method can be used to retrieve a specified number of results, depending on the actual needs.<\/p>\n<p>Finally, remember to close the cursor and connection after using them to release resources.<\/p>\n<p>Prior to using the cx_Oracle module, Oracle Instant Client may need to be installed. For specific installation steps, please refer to the official documentation of cx_Oracle.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>To retrieve data from an Oracle database, you can use the cx_Oracle module in Python. Firstly, make sure that the cx_Oracle module has been installed. You can install it using the following command: pip install cx_Oracle Next, use the following code example to retrieve data from an Oracle database: import cx_Oracle # \u5efa\u7acb\u4e0e\u6570\u636e\u5e93\u7684\u8fde\u63a5 conn = [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","footnotes":""},"categories":[1],"tags":[16953,129,16954,16955,16952],"class_list":["post-12865","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-cx_oracle","tag-database-connectivity","tag-oracle-data-retrieval","tag-python-db-tutorial","tag-python-oracle"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Python Oracle Database: Retrieve Data Guide - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"Learn to retrieve data from Oracle using Python with cx_Oracle. 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