Difference between Oracle 11G and 19C

In this article, we will learn why it is important to upgrade databases from 11G to 19C and what is the difference between Oracle 11G and 19C.

Version 11G

As of 2008, version 11G is an older version of the Oracle database version. This RDBMS does not have a pluggable database. This version of Oracle is very easy to install, develop and maintain. It is a browser-based interface that allows for integration testing of database changes.

Oracle 11G has the ability to view tables in a timely manner. It also offers high compression of all data. Reports run at this quality are much faster because they use less disk space. This release introduces Valuable MySQL Developer, a graphical user interface tool that allows developers to query, explain and monitor more effectively.

Version 19C

The latest version of Oracle 19C was released in early January 2019. It has been designated as the long-term release of the Oracle Database 12.2 family of products. This particular version will be supported until 2023 with extended support available until 2026.

Some of the new features in version 19C are following

  • Query Quarantine
    Unlike previous versions of Oracle, 19C solve the problem of overloading system resources with query requests. This version offers the automatic quarantine for queries to ensure that certain queries are not executed over and over again.
  • JSON Support
    This release has simplified the syntax of JSON functions and allows users to perform partial JSON updates. It also offers SODA APIs for Node.js, C, Python, and Java.
  • Automatic Indexing 
    19C provides a machine learning algorithm function that allows constant adjustment of the index. This algorithm results in improved system performance and higher cost savings. After a short period of use, this version of the database creates indexes that allow more efficient plans for each record.
  • Hybrid Partition Table
    This 19C feature allows database administrators to easily manage tables inside and outside the database. Database partitions can be easily managed with partitions that are in read-only data stores outside of the local database or in the cloud.
  • Active Data Guard
    This is a new feature that design to prevent downtime and data loss during database repairs and updates. Allows you to perform accidental updates while keeping a physical replica in sync or on standby.

Oracle Database 11G Features

  1. In 11g does not have PDB Pluggable Database
  2. In 11g does not have cloud support.
  3. The Oracle 11g does not provide in-memory capabilities.
  4. The Oracle 11g does not support JSON
  5. We can’t set the primary key to raising automatically.

Oracle Database 19C Features

  1. High-Speed data ingestion
  2. Active Data Guard DML Redirect
  3. Query Quarantine
  4. JSON Support and Introduce new JSON functions
  5. Automatic Indexing
  6. Hybrid Partitioned Tables
  7. Active Data Guard
  8. 19c can be deployed as a BM, VM, or Exadata database, or as Autonomous.
  9. To benefit from Autonomous Database features and it must be specifically selected during DBS creation.

Reasons to switch to 19C

Upgrade to the latest version of Oracle provides your business with many important benefits. One of the most important is the Oracle lifetime support policy and is only up to date with the latest version. If you don’t upgrade from previous versions then your support will expire and your business will be without Oracle support.

Second, the list of reasons is that new operating systems only support new database programs. Some of the older versions of Oracle not supporting by the newer operating systems your organization may be running. If you stop upgrading the database version then you will experience issues while upgrading the operating systems.

Finally, you need to consider security. As with any type of technology, the latest version is always the most secure. This is because the developers are evaluating the previous security issues with their previous versions. Hence the remedy for these problems in their latest version, which makes it even safer for the user.

If you have any question, Feel free to ask in comments section below.

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