Transformations by the Oracle Optimizer
To troubleshoot poorly performing SQL in Oracle, you must understand which transformations the optimizer has made. Jonathan Lewis demonstrates several possible optimizations for one query.
2022-02-09
Additional Articles
Enterprise SQL Server Performance Tuning and Management with dbWatch
We need to transition our team from single instance management and monitoring to managing the overall environment and addressing our most pressing needs to support the organization. How can we move from managing the trees to managing the forest in an efficient and automated manner with a small team?
2022-02-07
Help shape the future of Flyway
We’ve got some big plans for this year, and are looking to talk to people who use Flyway in a professional capacity. If you are willing to talk to us about how you first started using Flyway, then get in touch. Of course we’ll also look to say thank you for your time in our usual fashion.
2022-02-07
Data lakes take on big data
A data lake is a scalable data storage repository that can ingest large amounts of raw data and make it available on-demand. Robert Sheldon explains the benefits and challenges of data lakes.
2022-02-04
Google Cloud DB DevOps Report: Read Now
The 2021 report from the DevOps Research and Assessment (DORA) team at Google Cloud has now been published and provides highlights from seven years of research and data from more than 32,000 professionals worldwide.
2022-02-04
A Programmer’s Guide to Flyway Configuration
Phil Factor offers a programmer's guide to Flyway's configuration settings, explaining the different categories of parameters, the role of each of parameter within each category, and how to exploit Flyway's multi-level configuration file system.
2022-02-02
Deep SQL Query Optimization with SQL Grease
Learn how to conduct deep SQL Query optimization with SQL Grease with the Enterprise dashboard, historical data, troubleshooting SQL Server Wait Stats, capturing anomalies and intelligent notifications.
2022-02-02
7 Trends in DB DevOps & Monitoring: The infographic
Earlier this year, we surveyed 5,700 global IT professionals and found out what the most pressing issues in DevOps and monitoring were. Read the round up in our infographic.
2022-01-31
Creating a Database and Tables in PostgreSQL: Learning PostgreSQL with Grant
The syntax for creating databases and tables in PostgreSQL is similar to other RDBMS. In this article, Grant Fritchey shows how to create databases and tables.
2022-01-31
Debugging Flyway Callbacks and Migrations that Use Placeholders
Placeholders come in very handy in Flyway, but troubleshooting the SQL migration and callback scripts that use them can be tricky. This articles demonstrates how to develop, test and debug these scripts in a tool designed for these tasks, such as SSMS, leaving Flyway to do what it's designed for, which is running the scripts.
2022-01-28
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Designing SQL Server ETL Pipelines That Don't Break at Scale
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Detecting Deadlocks Quickly
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Question of the Day
Detecting Deadlocks Quickly
In the Database Engine, when a deadlock is detected, what does the detection interval shrink to (in time)?
See possible answers