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Expensive SQL on Exadata 26.1: Read the Offload Numbers Before You Build the Index

The Exadata ticket we see most often is not about a slow query. It is about a cluster that runs hot for hours, an IORM plan that somebody keeps re-tuning, and a licence conversation about [...]

SQL Server 2025 Expensive Queries: 7 Proven Ways to Find and Fix Them by Latency and Resource Cost

"Expensive queries" is a phrase that hides two different problems. One is response time: a statement the application waits too long for. The other is resource efficiency: a statement that burns CPU, logical reads and [...]

Db2 13 for z/OS Index Efficiency: 8 Proven Troubleshooting Techniques

Most index efficiency problems on Db2 13 for z/OS are not I/O problems. They are CPU problems that look like I/O problems from a distance. Index efficiency is measured in getpages, and a four-level index [...]

PostgreSQL Support diagram of the query lifecycle from parse to execute with planner inputs, pg_stat_statements instrumentation and a wait event triage table

Optimizing SQLs in PostgreSQL 18.4: 12 Proven Techniques for Peak Performance

A practical field manual for optimizing SQLs in PostgreSQL 18.4: EXPLAIN with buffers, B-tree skip scans, asynchronous I/O, statistics, join tuning, six animated diagrams and seven premium diagnostic scripts.

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Top 10 Trino Performance Anti-Patterns to Avoid in Production

Trino Performance Anti-Patterns are among the most critical challenges facing data engineers running Trino (formerly PrestoSQL) — the powerful distributed SQL query engine designed for fast analytic queries against data of any size. Even experienced [...]

Top 10 SQL Server Performance Tuning Techniques Every DBA Should Know in 2026

Ten high-leverage SQL Server performance tuning techniques every DBA should master in 2026 — from Query Store and index design to Intelligent Query Processing and wait-statistics analysis, each with runnable T-SQL. By MinervaDB Inc.

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The SQL Server Query Optimizer: Cost-Based Plan Search Explained

SQL Server query optimizer: a practical look at how it works, what to tune, and the pitfalls that trip up production SQL Server.

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SQL Server Query Store FAQ – Enabling, Purging, and Disabling

SQL Server Query Store FAQ: Enabling, Purging, and Disabling the Query Store in SQL Server SQL Server’s Query Store is a powerful performance monitoring feature that captures query execution history, plans, and runtime statistics. Introduced […]

Optimizing Query Performance in Snowflake

Optimizing Query Performance in Snowflake: Clustering Keys vs. Search Optimization Service In modern data warehousing, performance at scale is critical. Snowflake offers two powerful features—Clustering Keys and the Search Optimization Service (SOS)—to accelerate query performance […]

Next-Gen Data Management

Next-Gen Data Management: Transforming Database Operations for the Modern Enterprise Introduction The landscape of data management is undergoing a revolutionary transformation. As organizations grapple with exponential data growth, evolving business requirements, and emerging technologies, traditional […]

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