{"id":3027,"date":"2019-11-23T03:46:26","date_gmt":"2019-11-23T10:46:26","guid":{"rendered":"https:\/\/oracletutorial.com\/?page_id=3027"},"modified":"2025-05-31T19:06:09","modified_gmt":"2025-06-01T02:06:09","slug":"updating-data","status":"publish","type":"page","link":"https:\/\/www.oracletutorial.com\/python-oracle\/updating-data\/","title":{"rendered":"Updating Data In Oracle Database from Python"},"content":{"rendered":"\n<p><strong>Summary<\/strong>: in this tutorial, you will learn how to use the Python cx_Oracle API to update data in a table.<\/p>\n\n\n\n<p>To update data in a table, you follow these steps:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>First, <a href=\"https:\/\/www.oracletutorial.com\/python-oracle\/connecting-to-oracle-database-in-python\/\">connect to the Oracle Database<\/a> by creating a new <code>Connection<\/code> object.<\/li>\n\n\n\n<li>Second, create a <code>Cursor<\/code> object from the <code>Connection<\/code> object.<\/li>\n\n\n\n<li>Third, execute an <code><a href=\"https:\/\/www.oracletutorial.com\/oracle-basics\/oracle-update\/\">UPDATE<\/a><\/code> statement by calling the <code>Cursor.execute()<\/code> method.<\/li>\n\n\n\n<li>Fourth, call the <code>Connection.commit()<\/code> method to apply the changes to the database.<\/li>\n\n\n\n<li>Finally, release the <code>Cursor<\/code> and <code>Connection<\/code> objects. You can use the <code>with<\/code> block to release these objects automatically.<\/li>\n<\/ul>\n\n\n\n<p>The following code illustrates how to update the amount for a billing document based on a specific billing number.<\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-1\" data-shcb-language-name=\"Python\" data-shcb-language-slug=\"python\"><span><code class=\"hljs language-python\"><span class=\"hljs-keyword\">import<\/span> oracledb\n<span class=\"hljs-keyword\">from<\/span> connect <span class=\"hljs-keyword\">import<\/span> connect\n<span class=\"hljs-keyword\">import<\/span> logging\n\n\n<span class=\"hljs-function\"><span class=\"hljs-keyword\">def<\/span> <span class=\"hljs-title\">update<\/span><span class=\"hljs-params\">(billing_no: int, amount: float)<\/span> -&gt; bool:<\/span>\n\n    sql = <span class=\"hljs-string\">'''update billing_headers \n             set amount = :amount \n             where billing_no = :billing_no'''<\/span>\n    <span class=\"hljs-keyword\">try<\/span>:\n        <span class=\"hljs-keyword\">with<\/span> connect() <span class=\"hljs-keyword\">as<\/span> connection:\n            <span class=\"hljs-keyword\">with<\/span> connection.cursor() <span class=\"hljs-keyword\">as<\/span> cursor:\n                params = {\n                    <span class=\"hljs-string\">'billing_no'<\/span>: billing_no,\n                    <span class=\"hljs-string\">'amount'<\/span>: amount,                    \n                }\n                cursor.execute(sql, params)\n                connection.commit()\n                <span class=\"hljs-keyword\">return<\/span> <span class=\"hljs-literal\">True<\/span>\n    <span class=\"hljs-keyword\">except<\/span> oracledb.Error <span class=\"hljs-keyword\">as<\/span> e:\n        error_message = <span class=\"hljs-string\">f\"Oracle database error during billing update for billing_no  <span class=\"hljs-subst\">{billing_no}<\/span>: <span class=\"hljs-subst\">{e}<\/span>\"<\/span>\n        logging.error(error_message)\n        <span class=\"hljs-keyword\">raise<\/span>\n    <span class=\"hljs-keyword\">except<\/span> Exception <span class=\"hljs-keyword\">as<\/span> e:\n        error_message = <span class=\"hljs-string\">f\"An unexpected error occurred during billing update for billing_no <span class=\"hljs-subst\">{billing_no}<\/span>: <span class=\"hljs-subst\">{e}<\/span>\"<\/span>\n        logging.critical(error_message) \n        <span class=\"hljs-keyword\">raise<\/span>\n\n\n<span class=\"hljs-keyword\">if<\/span> __name__ == <span class=\"hljs-string\">'__main__'<\/span>:\n    update(<span class=\"hljs-number\">1<\/span>, <span class=\"hljs-number\">2000<\/span>)<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-1\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">Python<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">python<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n\n<p>After executing the program, you can examine the contents of the <code>billing_headers<\/code> table:<\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-2\" data-shcb-language-name=\"Python\" data-shcb-language-slug=\"python\"><span><code class=\"hljs language-python\">SELECT * \nFROM billing_headers\nWHERE billing_no = <span class=\"hljs-number\">1<\/span>;<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-2\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">Python<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">python<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n\n<p>Here is the output:<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"364\" height=\"42\" src=\"https:\/\/www.oracletutorial.com\/wp-content\/uploads\/2019\/11\/python-oracle-update-example.png\" alt=\"python oracle update example\" class=\"wp-image-3028\" srcset=\"https:\/\/www.oracletutorial.com\/wp-content\/uploads\/2019\/11\/python-oracle-update-example.png 364w, https:\/\/www.oracletutorial.com\/wp-content\/uploads\/2019\/11\/python-oracle-update-example-300x35.png 300w\" sizes=\"auto, (max-width: 364px) 100vw, 364px\" \/><\/figure>\n\n\n\n<p>In this tutorial, you have learned how to use the python-oracledb API to update data in a table.<\/p>\n<div class=\"helpful-block-content\" data-title=\"\">\n\t<header>\n\t\t<div class=\"wth-question\">Was this tutorial helpful?<\/div>\n\t\t<div class=\"wth-thumbs\">\n\t\t\t<button\n\t\t\t\tdata-post=\"3027\"\n\t\t\t\tdata-post-url=\"https:\/\/www.oracletutorial.com\/python-oracle\/updating-data\/\"\n\t\t\t\tdata-post-title=\"Updating Data In Oracle Database from 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tutorial, you will learn how to use the Python cx_Oracle API to update data in a table.<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":2999,"menu_order":4,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-3027","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Updating Data From Oracle in Python<\/title>\n<meta name=\"description\" content=\"In this tutorial, you will learn how to use the Python cx_Oracle API to update data in a table.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.oracletutorial.com\/python-oracle\/updating-data\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta 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