{"id":702,"date":"2025-02-12T18:41:34","date_gmt":"2025-02-12T18:41:34","guid":{"rendered":"https:\/\/humtechno.com\/intro\/?p=702"},"modified":"2025-02-12T18:43:29","modified_gmt":"2025-02-12T18:43:29","slug":"oracle-database-a-study-on-consistency-reliability-and-approached-with-passion","status":"publish","type":"post","link":"https:\/\/humtechno.com\/intro\/2025\/02\/12\/oracle-database-a-study-on-consistency-reliability-and-approached-with-passion\/","title":{"rendered":"Oracle Database: A Study on Consistency \/ Reliability and approached with passion"},"content":{"rendered":"\n\n\n
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\"\"<\/figure>\n<\/div>\n

In 2017, I was assigned a highly critical and challenging task: upgrading an Oracle E-Business Suite (EBS) database<\/strong>. The project appeared straightforward at first, but as I started my analysis, I uncovered several major issues that posed significant risks to the stability of the database and the overall upgrade process.<\/p>\n

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Challenges Identified<\/strong><\/h3>\n\n
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  1. No recent backups<\/strong> \u2013 The database had no available backups for over a year.<\/li>\n\n\n\n
  2. Disaster Recovery (DR) site was out of sync<\/strong> \u2013 The backup process through RMAN consistently failed, generating ORA-6000 errors<\/strong>.<\/li>\n\n\n\n
  3. Failed database export attempts<\/strong> \u2013 Efforts to export the database were unsuccessful due to out-of-memory errors.<\/li>\n\n\n\n
  4. Unsupported database version<\/strong> \u2013 The system was running Oracle 10g<\/strong>, which was already out of support. Oracle recommended applying a patch to resolve issues, but that required a database restart, which was considered highly risky.<\/li>\n\n\n\n
  5. Potential database corruption<\/strong> \u2013 Data files had been accidentally dropped at the OS level<\/strong>, forcing the team to restore from an older backup. This resulted in data loss<\/strong>, preventing users from accessing historical records.<\/li>\n\n\n\n
  6. Fear of restarting the database<\/strong> \u2013 The existing system was running fine, but any restart posed a major risk of failure.<\/li>\n<\/ol>\n
    \n
    \"\"<\/figure>\n<\/div>\n

    Finding a Solution<\/strong><\/h3>\n\n

    Despite these overwhelming challenges, I conducted a deep analysis<\/strong> and discovered a workaround for RMAN backup failures<\/strong>. By modifying and optimizing the RMAN backup script, I successfully executed a full database backup without impacting production operations<\/strong>. This was a major breakthrough<\/strong>, ensuring that we had a recent backup to work with.<\/p>\n

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    \"\"<\/figure>\n<\/div>\n

    Next, I restored<\/strong> the backup in a test environment<\/strong>, demonstrating that the database could be recovered successfully. This was a significant milestone<\/strong> in the project, as the backup issue was a major showstopper<\/strong> for the database and application upgrade. Senior management was highly appreciative<\/strong> of this achievement.<\/p>\n\n

    Restoring Stability and Completing the Upgrade<\/strong><\/h3>\n\n

    With the database backup issue resolved, I proceeded to set up a Disaster Recovery (DR) site<\/strong>, ensuring high availability<\/strong> and data redundancy<\/strong>. This added an extra layer of protection and stability to the system.<\/p>\n\n

    By mid-2018<\/strong>, I successfully upgraded both the Oracle EBS application and the database<\/strong>. Throughout the entire process, we never needed to restart the 10g database<\/strong>, nor did we apply the patch, as it continued to function smoothly until the final upgrade was completed.<\/p>\n

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    \"\"<\/figure>\n<\/div>\n

    Key Takeaways<\/strong><\/h3>\n\n
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    • Oracle Database is highly reliable and flexible<\/strong>, even when running on outdated versions.<\/li>\n\n\n\n
    • Proper analysis and strategic problem-solving<\/strong> can overcome even the most challenging technical obstacles.<\/li>\n\n\n\n
    • Nothing is impossible if approached with passion, persistence, and technical expertise.<\/strong><\/li>\n<\/ul>\n\n

      This experience reinforced my confidence in Oracle\u2019s robust architecture<\/strong> and taught me the value of perseverance in solving complex technical problems.<\/p>\n\n\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":2,"featured_media":704,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"pagelayer_contact_templates":[],"_pagelayer_content":"","footnotes":""},"categories":[3],"tags":[118,119],"class_list":["post-702","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-oracle","tag-oracle-database","tag-oracle-database-reliable"],"_links":{"self":[{"href":"https:\/\/humtechno.com\/intro\/wp-json\/wp\/v2\/posts\/702","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/humtechno.com\/intro\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/humtechno.com\/intro\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/humtechno.com\/intro\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/humtechno.com\/intro\/wp-json\/wp\/v2\/comments?post=702"}],"version-history":[{"count":2,"href":"https:\/\/humtechno.com\/intro\/wp-json\/wp\/v2\/posts\/702\/revisions"}],"predecessor-version":[{"id":709,"href":"https:\/\/humtechno.com\/intro\/wp-json\/wp\/v2\/posts\/702\/revisions\/709"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/humtechno.com\/intro\/wp-json\/wp\/v2\/media\/704"}],"wp:attachment":[{"href":"https:\/\/humtechno.com\/intro\/wp-json\/wp\/v2\/media?parent=702"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/humtechno.com\/intro\/wp-json\/wp\/v2\/categories?post=702"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/humtechno.com\/intro\/wp-json\/wp\/v2\/tags?post=702"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}