ORA-00904: Invalid Identifier in Oracle Databases

13/02/2025

ORA-00904: Invalid Identifier in Oracle Databases

When you’re working with Oracle databases, some errors pop up so regularly that DBAs almost recite them in their sleep. ORA-00904: invalid identifier is certainly one of those classic offenders. On the face of it, ORA-00904 indicates you’ve referenced a column or other identifier that Oracle can’t locate or doesn’t consider valid. Straightforward enough—maybe there’s a simple typo, or a missing column in your table. But there are subtler corners of Oracle that can trigger the same error even when you think you’ve done everything right.

Achieve Database Optimization Without Abandoning Normalization

30/01/2025

Achieve Database Optimization Without Abandoning Normalization

High concurrency, scattered queries, unpredictable data growth—the usual suspects. When everything’s slow and your tables are bursting, you face a tough choice: enforce strict normalization for pristine data integrity or optimize aggressively to wring out every last drop of performance. Overly normalized schemas may lead to a maze of joins and hamper speed under heavy loads. Performance-driven shortcuts—like denormalizing key data—can bloat storage and complicate updates.  Balancing database optimization and normalization isn’t always straightforward, but it is possible. 

Database Performance Tuning - the Sensible Way: Collaborative Strategies, Clear Metrics, and Tested Changes

23/01/2025

Database Performance Tuning – the Sensible Way: Collaborative Strategies, Clear Metrics, and Tested Changes

Databases are either the invisible workhorse that keeps everything running smoothly or the ticking time bomb that wakes you at 3 a.m. with catastrophic slowdowns. There’s rarely a middle ground. Performance tuning makes all the difference—especially when you combine actual metrics, meaningful collaboration, and a dash of common sense. A few checks here and there can save hours of panic later on, and nothing beats a stable, responsive system for making you look like the hero of the IT team. 

Of course, it helps to have a reliable way to see what’s going on under the hood while performance tuning, keep everyone on the same page, and avoid applying fixes blindly. After all, a well-tuned database is happier, and so are the people who rely on it every day.

Performance Monitor 2024.4: What’s New

09/01/2025

Performance Monitor 2024.4: What’s New

Managing database performance is rarely straightforward, and the demands only keep multiplying. In response, DBPLUS Performance Monitor 2024.4 introduces new features that help you see exactly how queries behave across different platforms, track CPU usage at a glance, refine how and when alerts reach you, and unify session data.

If you prefer a monitoring tool that shows critical insights with less hassle, the latest version deserves your attention.

Databases in 2025: New Architectures, Smarter AI, and Stronger Security

19/12/2024

Databases in 2025: New Architectures, Smarter AI, and Stronger Security

The year is 2025, and the databases that once seemed so clever have gotten old and cranky. They’re no longer content with sitting there, quietly holding onto rows and columns like good little librarians. Nope. Now they’ve got opinions. They’ve got styles. They’ve got ideas about how to organize themselves, how to spread out across the clouds, how to speak human language, and how to lock the door behind you when you’re done rummaging through their shelves.

The old way of doing things — shoving everything into a single warehouse and hoping for the best — is about as appealing as canned spinach.  So, what will we do instead?

DBPLUS PERFORMANCE MONITOR Release 2024.3

14/11/2024

What’s New in DBPLUS Performance Monitor 2024.3

In the latest update of DBPLUS PERFORMANCE MONITOR, version 2024.3, we’re rolling out exciting enhancements and brand-new features. All are designed to elevate your database monitoring and management capabilities to the next level. 

From real-time online monitoring improvements to smarter notification systems, we’re excited to walk you through what’s new, what’s better, and how these changes can make a big difference in managing your databases.