Pubudu: Data and Decisions

Performance tuning in Oracle Database often focuses on obvious areas like indexes, SQL rewrites etc. But some of the most impactful improvements can come from lesser known techniques. Here are 5 such tuning tricks that can make a real difference in production environments.   Use SQL Plan Baselines to Stabilize Performance Even properly tuned queries in Oracle Database can suddenly degrade when execution plans change due to statistics refreshes or system upgrades. Using SQL Plan Baselines helps maintain stable and efficient execution plans, preventing unexpected performance regressions especially in highly changing workloads. SELECT * FROM DBA_SQL_PLAN_BASELINES; So, don’t just capture baselines, but periodically change them to allow the optimizer to adopt better plans when appropriate. Use Automatic Indexing Automatic Indexing is a useful feature in Oracle Database that can improve performance with minimal effort.  It was introduced in Oracle Database 19c and enhance...

SQL injection is one of the most common security risks in database driven applications. Normally, protection is implemented in the application layer using input validation and parameterized queries. However this approach depends heavily on developers and code quality. The SQL Firewall feature in Oracle Database introduces a different approach by adding protection directly at the database layer. This allows the database itself to identify and block unauthorized or suspicious SQLs before they are executed. How SQL Firewall Works The SQL Firewall works by learning the normal SQL patterns used by an application and then allowing only those approved statements to run. Any new or unexpected SQL is treated as a potential threat and can be blocked. This is especially useful for production environments where code changes are difficult and applications that are exposed to the internet. By implementing security at the database level, organizations gain an additional defense layer without modi...

Today I'll discus on how we can build continuous data trust with Oracle GoldenGate Veridata 26c! As we accelerate towards hybrid and multi cloud architectures , one challenge keep coming up. That is "H ow do you trust your data across all these platforms?" With increasing data movement, replication, and transformation, even small changes can lead to major business risks. This is where Oracle GoldenGate Veridata 26c comes in handy! Rather than just validating data occasionally, the focus now is on continuous data trust . What is Veridata? It is a tool to compare data across different systems. It ensures source and target databases are in sync. It works during , Data migration, Replication setups, Ongoing operations. What’s new in Veridata 26c? 1. Support for Modern Architectures Built for hybrid, multi-cloud, and lakehouse environments with support for heterogeneous databases. 2. Continuous Data Validation Enables ongoing validation to detect data drift and inconsisten...

Modern cloud applications are moving toward serverless architectures because they reduce infrastructure management and allow developers to focus on code. Oracle Cloud Infrastructure (OCI) provides a powerful serverless service called “Oracle Functions”. It allows developers to run code without managing servers. In this post, I’ll go through how to create a simple serverless API using Oracle Functions and expose it through an HTTP endpoint. Oracle Functions provides several advantages, No server management Automatic scaling Pay only for execution time Easy integration with other OCI services   The process of flow is as below, User sends an HTTP request OCI API Gateway triggers a Function Function processes the request Response is returned Lets see how to create a simple function. 1.       First create a function using the 'Fn Project CLI' supported by OCI. fn init --runtime python myhello-function cd myhello-function 2. ...

Oracle Cloud Infrastructure (OCI) follows a security first approach that is different from many other cloud providers. In OCI, security is built into the platform from the beginning.  When you create resources in OCI, they start in a secure state by default. For example: compute instances do not receive a public IP automatically, network access is blocked unless you explicitly allow it, and all storage is encrypted without requiring extra configuration. This design helps reduce common security mistakes caused by misconfiguration. OCI also stands out because of its strong isolation model. It offers true bare metal servers where customers get full control of the hardware, and Oracle does not have access to customer memory. Even virtual machines are designed with strong tenant isolation. This is different from many other cloud platforms where workloads often share underlying infrastructure. Strong isolation reduces the attack surface and makes OCI a good choice for industries with str...

Oracle Cloud Infrastructure (OCI) is a modern cloud platform designed to help businesses run their applications faster, safer, and at lower cost. It supports companies of all sizes in moving their workloads to the cloud with confidence. OCI is built for high performance. Its advanced architecture allows applications, databases, and workloads to run smoothly with low latency. This makes it suitable for business critical systems, data analytics, and enterprise applications. Security is a core feature of Oracle Cloud. Data is encrypted by default, and strong identity and access controls help protect systems from threats. OCI also meets global compliance standards, making it a trusted choice for regulated industries. Oracle Cloud works especially well with Oracle databases and applications, offering better performance and efficiency. At the same time, it supports open source tools and technologies, allowing organizations to use the platforms and frameworks they already know. Oracle Cloud...