{"id":6152,"date":"2024-03-14T03:55:09","date_gmt":"2024-03-14T03:55:09","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/what-is-the-method-to-change-the-character-set-of-oracle-database\/"},"modified":"2025-08-02T00:03:25","modified_gmt":"2025-08-02T00:03:25","slug":"what-is-the-method-to-change-the-character-set-of-oracle-database","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/what-is-the-method-to-change-the-character-set-of-oracle-database\/","title":{"rendered":"Change Oracle Database Character Set: Step-by-Step"},"content":{"rendered":"

To change the character set of an Oracle database, follow these steps:<\/p>\n

    \n
  1. To determine the character set of the current database, you can query the V$NLS_PARAMETERS view.<\/li>\n
  2. Create a database export file: Before changing the character set, make sure to back up the database to prevent any data loss. You can use the expdp command to create the database export file.<\/li>\n
  3. Change the database character set: You can modify the character set of a database using the ALTER DATABASE command. For example, you can use the following command to change the database character set to AL32UTF8:<\/li>\n<\/ol>\n
    ALTER<\/span> DATABASE CHARACTER<\/span> SET<\/span> AL32UTF8;\r\n<\/code><\/pre>\n
      \n
    1. Rebuilding database: After modifying the character set, you need to rebuild the database in order for the changes to take effect. You can use the impdp command to import the previously backed-up database files.<\/li>\n
    2. Restart the database: Once the rebuilding is complete, restart the database to apply the new character set settings.<\/li>\n<\/ol>\n
      Please be aware that changing the database character set may result in data loss or corruption, so it is recommended to back up the database before making any modifications.<\/p>\n","protected":false},"excerpt":{"rendered":"
      To change the character set of an Oracle database, follow these steps: To determine the character set of the current database, you can query the V$NLS_PARAMETERS view. Create a database export file: Before changing the character set, make sure to back up the database to prevent any data loss. You can use the expdp command […]<\/p>\n","protected":false},"author":9,"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":[7244,724,2165,7099,813],"class_list":["post-6152","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-alter-database","tag-character-set","tag-database-migration","tag-expdp","tag-oracle-database"],"yoast_head":"\nChange Oracle Database Character Set: Step-by-Step - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"Learn how to safely change Oracle database character set: check current settings, export data, and use ALTER DATABASE command.\" \/>\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.silicloud.com\/blog\/what-is-the-method-to-change-the-character-set-of-oracle-database\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Change Oracle Database Character Set: Step-by-Step\" \/>\n<meta property=\"og:description\" content=\"Learn how to safely change Oracle database character set: check current settings, export data, and use ALTER DATABASE command.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/blog\/what-is-the-method-to-change-the-character-set-of-oracle-database\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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