20. 11. 2019.

How to install Oracle SQL Developer Data Modeler 19.2 on Ubuntu 18.04 LTS

One of the main reasons why I choose Fedora as my main operating system is due to Oracle dependency on rpm package manager and because of the bleeding edge of Open Source technology like the latest kernel version, compilers, new drivers etc. Unfortunately, very often bleeding edge means bloody edge as I have to spend […]

21. 10. 2019.

Performing stress test against Oracle database that is running in a Cloud

Today majority of enterprises are moving or at least considering moving some load into the Cloud. What you need to be aware in such case, system requirements for a Cloud load are quite different when comparing with on-premises, mainly due to many new moving parts that are not present within classical environment such as sharing […]

07. 10. 2019.

Installing Oracle database on Amazon AWS

Although you can use AWS RDS service which offers PaaS architectural model of running Oracle database on top of AWS Cloud, due to many limitations (installation type, options selected etc.), many enterprises still prefer using IaaS model, where such restrictions does not exist (e.g. you can install Enterprise Edition of Oracle database, RAC, Data Guard […]

23. 09. 2019.

Running Cloud within your Data Center on-premises

Of the 350 companies surveyed, 74% had moved an application into the public cloud, and then for a variety of reasons and circumstances, decided to move it back into their on-premises or private cloud infrastructure.   More you can find on the following link: https://www.fortinet.com/blog/industry-trends/ihs-markit-fortinet-cloud-report-insights.html?utm_source=social&utm_medium=twitter-org&utm_campaign=sprinklr&utm_term=Corporate%2CThought+Leadership   The first interesting finding is the growing sense that […]

11. 09. 2019.

Who else could read your private & sensitive data stored in Cloud?

ZDNet has recently published an interesting article related to Public Cloud and GDPR related data jurisdiction – US Cloud act. Article is about digital sovereignty as more than half of European business with over 1,000 employees are using a public cloud platform, mostly AWS & Azure that dominate the Cloud market, IBM that dominates hybrid-cloud […]

05. 09. 2019.

Reducing CPU consumption and Oracle licenses by fixing context switching in Oracle Db

Context switching is one of the most overlooked topics when tuning the Oracle database, as you can’t simply see it directly (e.g. “context switching” wait event doesn’t exist). Instead you should use indirect approach (through the increased CPU consumption), as it’s recorded as a CPU wait event. Context switching what it is and what impact […]

02. 09. 2019.

Cloning larger bootable HDD into a smaller one

This article is triggered by the real case when I have not only to clone larger (external) disk into a smaller one, but to keep cloned disk bootable as it’s source. The article is mainly reminder what I need to do, as I frequently need to prepare PoC (Proof of Concept) that requires to run […]

28. 08. 2019.

Installing Ubuntu on an external bootable HDD

In case you need to experiment with different OS from one that you already have installed, but don’t want to take a dual-boot approach to avoid possible corruption of your main disk, then keep reading this article – Installing Ubuntu on an external bootable HDD.   Although it is possible to run Linux along with […]

23. 08. 2019.

Oracle single-threaded CPU performance reference test, native compilation and performance improvement after upgrading your database

In this article I’ll provide a very simple way of how to test Oracle CPU single-thread performance.   Apart from that, I’ll cover performance boost you might expect when upgrading your server (especially CPU), expected performance boost when performing simple upgrade of the Oracle database, and issues and workarounds related to native compilation of PL/SQL […]

14. 08. 2019.

Cloud – shared responsibility model, SaaS & Cloud security best practice

As industry is moving fast toward Cloud adoption, although not new (Amazon AWS platform was launched in July 2002), it’s no surprise that Cloud is still one of the hottest technologies around. Started with Simple Queue Service (first AWS service launched in November 2004), Cloud today is far away from the simple file sharing service. […]