How to Create a SQL Server Linked Server to Oracle 26ai Free
Easily move data from SQL Server to Oracle 26ai Free with this step-by-step guide.
2026-01-26
Oracle
Oracle Performance Tuning: Practical Techniques Every DBA Should Master
Here are a few things every Oracle DBA should know about performance in their databases.
2025-10-03
1,597 reads
Oracle Architecture Overview
In this document I will share an overview of Oracle’s architecture that isn’t complete, but it will give you a basic understanding of how the architecture works, especially if you are coming from other database platforms.
2025-01-24
SQL Server vs Oracle Query Statistics to Improve Performance
In this article, learn how to query cached query statistics and execution plans for Oracle or SQL Server to identify code that can be optimized to improve performance.
2023-07-21
The SELECT Statement in Oracle
The SELECT statement is used to retrieve information from a database. Following the execution of a SELECT statement, a tabular result is held in a result table (called a result set). It allows you to select the table columns depending on a set of criteria. In this article, I will introduce the basic SELECT statement fetching data from just one table.
2023-06-21
Oracle optimizer removing or coalescing subqueries
The Oracle optimizer often changes the query to get better performance. In this article, Jonathan Lewis explains two more optimizations involving subqueries.
2022-05-25
Why your PL/SQL needs to be testable – and how to do it: Part 1
Part 1: What is testable code, why is it important, and first glimpses on practices that can help
2022-04-27
Oracle subquery caching and subquery pushing
In this article, Jonathan Lewis discusses why you might want to stop the optimizer from unnesting some subqueries and how to control where the optimizer positions each subquery.
2022-04-11
The effects of NULL with NOT IN on Oracle transformations
IN and NOT IN subqueries are frequently used in Oracle. Jonathan Lewis explains how the optimizer handles NULL with IN and NOT IN.
2022-03-18
Oracle ASM: Migrating from UDEV devices to the ASM Filter Driver
This article looks at the way in which you can convert unmanaged devices to the ASM filter drive in an Oracle system.
2022-03-04
4,528 reads
Blogs
Webinar: Navigating the Database Landscape in 2026
By Steve Jones
For a number of years, we’ve produced the State of the Database Landscape report,...
Claude AI Convinced Me Not to Build an iPad App
By Steve Jones
I coach volleyball and I do a lot of stat stuff on paper. I...
A New Word: Dolorblindness
By Steve Jones
dolorblindness – n. the frustration that you’ll never be able to understand another person’s...
Forums
SSMS 22 Latest Update Crashing
Hi all, I've just had to roll back my SSMS 22 version from 22.3.0,...
Transactional Replication setup issue
Hi! I've been banging my head against the wall for 2 days now trying...
The Power of Data and Privacy
Comments posted to this topic are about the item The Power of Data and...
Question of the Day
What's the Date?
In SQL Server 2025, there is a new function that returns the current date without the time. What is it?
See possible answers