Optimizing Performance in Oracle to Azure Hyperscale Citus Migrations

Oracle to PostgreSQL Azure

Are you using Oracle and thinking about switching to Azure Hyperscale Citus to make your database faster and handle more information? You’re in the perfect spot! In this post, we’re going to show you how to make sure your switch goes smoothly and your database works better than ever.

Azure Hyperscale Citus

Azure Hyperscale Citus is a managed database service based on PostgreSQL. It lets you scale your database by spreading data and queries across many servers. This setup is great for apps that need to handle a lot of data quickly and without delays, offering excellent performance.

Key Ways to Improve Performance

    1. Spread Out Your Data Properly:

 First, you need to figure out the best way to split your data across different computers. This is key because it affects how fast you can get information and use resources.

    • Pick the Right Key: Choose a key that matches how you use your app. This decides how your data is split and stored, which can make your queries faster and more balanced.
    1. Adjust Your Queries for the New System:

          Moving to Citus means changing how you write queries to get the best performance.

    • Change SQL Queries: Some queries that worked well in Oracle might need changes to work well in Citus. Make sure your queries take advantage of Citus’s setup to run faster.
    • Run Queries in Parallel: Citus can run many parts of a query at once on different servers. Make sure your queries are set up to work this way for faster results.
    1. Think About Indexing:

Even though Citus works with PostgreSQL’s indexing, the way it spreads data out means you have to plan your indexes a bit differently.

    • Use Indexes Wisely: Good indexing can make your queries much faster. Plan around how you spread your data and how you ask for information.
    • Keep an Eye on Indexes After Moving: Watch how things are going and adjust your indexes to keep things running smoothly.
    1. Keep Checking and Improving Performance:

Moving to Citus is just the beginning. Keep an eye on things and make changes as needed.

    • Use Azure’s Tools: Azure has tools to help you see where problems might be. Use these regularly to make things better.
    • Keep Making Changes: Based on what you find, keep tweaking how your data is organized, how queries run, and how indexes are used. Small changes can make a big difference.
    1. Profiling and Benchmarking:

Before making improvements, it’s important to find out where the problems are. Use tools to watch how well your application is working, and use benchmarks to see how changes affect it. This helps you focus on areas that will make the biggest difference.

    • Utilize Profiling Tools: Use tools like pg_stat_statements and pg_stat_activity to watch how your database is performing and find any slowdowns. Look at how long queries take, how resources are used, and any waits happening to find areas that need fixing.
    • Benchmarking Performance: Run tests to see how fast your system runs normally and then compare it to after you’ve made improvements. Check how quickly queries run, how much work your system does, and if things are faster after changes to see if they worked.
    1. Caching Strategies:

    • App-Level Caching: Store often-used data in memory with tools like Redis or Memcached. This eases the strain on the database.
    • Content Delivery Networks (CDNs): Deliver static content from nearby servers to speed up loading.
    • Database Caching: Use the database’s own caching tools to save frequently retrieved data or query results.
    1. Security Tips:

    • Make Speed a Priority: When adding security measures, focus on speed too. Don’t let security tools slow things down. Use encryption and authentication methods that are fast and still secure.
    • Use Fast Encryption: Pick encryption methods and software that don’t take up too much computer power but still keep data safe. AES and RSA are good choices, depending on the situation. Adjust encryption settings to be fast and secure.


Switching from Oracle to Azure Hyperscale Citus can give your database the boost it needs. By planning how to spread out your data, adjust your queries, and continuously improve performance, you can make the most of what Citus offers. This not only makes your app run smoother but also prepares your database for future growth.

Preparing to migrate from Oracle to Azure Hyperscale Citus?

Elevate your database performance with our expert guidance on performance optimization strategies. From understanding data distribution to query optimization and continuous monitoring, we equip you with the tools to unlock Azure Hyperscale Citus’s full potential.

Partner with Newt Global DMAP for a seamless migration experience and unlock the scalability and efficiency of Azure Hyperscale Citus. Contact us at marketing@newtglobalcorp.com to embark on your performance optimization journey today.

Newt Global DMAP is a world-class product enabling mass migration of Oracle DB to cloud-native PostgreSQL faster, better, and cheaper.