Technical Articles

The Technical Articles section provides a wide variety of detailed technical content covering a wide area of material which has been written by our technical team members.


The Impact of DIRECT_IO and File System Caching


This article follows on from the earlier TPC-C benchmarking performed on IDS 12.10, if you missed it, you can read it here. This article takes a view on the topic of DIRECT_IO and its use within IDS, it also highlights the impact of file system caching on Linux, which is relevant for those editions of Informix where DIRECT_IO cannot be used. Lastly, a ‘just for fun’ comparison of DIRECT_IO and RAW devices for readers to come to their own conclusions.

Little known IDS commands: genoncfg


In this series of articles, we are exploring some of the lesser known, lost and forgotten commands buried away in your Informix bin directory. Today we’re going to have a closer look at the genoncfg utility. As the name suggests, this command generates a basic onconfig file for you, given a set of input parameters.

A Simple Informix ESQL-C Makefile


If you’re building or fixing Informix ESQL-C applications then you’re almost guaranteed to come across the UNIX ‘make’ utility. This article describes a very simple Makefile for ESQL-C that can be adapted for many small projects.

Vulnerability Assessment: What are my options?


IBM Guardium Vulnerability Assessment is a key part of the Guardium Database Security portfolio. It is designed to help harden database infrastructures by scanning targeted systems on a scheduled basis to detect vulnerabilities. This article explains what IBM Guardium Vulnerability Assessment (VA) actually delivers and what the differences are between the various editions. Note that since the introduction of Guardium 10, there are no longer different editions of this product and all of the Advanced Edition features are available with the product.

A Fresh Look at Database Security


In September 2015, IBM released Guardium 10, the latest version of its flagship enterprise database security suite. IBM Guardium is relevant to any organization wishing to improve its database security management and is becoming the de facto standard for database activity monitoring and database vulnerability assessment for IBM DB2, IBM Informix, Oracle and SQL Server.

This article is a quick glance at some of the more obvious operational improvements with Guardium 10, comparing the installation and configuration process and taking a look at the new interface. This article is aimed at those already familiar with Guardium or those who may have evaluated earlier versions and would like to start to explore the capabilities of the new version.