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There’s a lot of articles about installing Oracle XE 18c on Docker. But Docker is not the only containerization technology on the market. In this article, we are going to create Oracle XE 18c installation in Li
In my previous post I described a case of "enq: TX – row lock contention" that was actually a network latency problem. More and more those kinds of problems (it seems like history happens all over again) caused
So we had a doubtful pleasure of migrating a few databases from Oracle Exadata X3-2 to Oracle Exadata X7-2 Cloud at Customer. Why doubtful? Well, this a material for a whole different story with a lot of beer –
You probably heard by now about Oracle Cloud Free Tier While it sounds good, the only databases that you can use are in fact autonomous databases (which are not interesting for a tech, geeky guy like me). Of co
Python is awesome. I like Python very much, but there are some cases where Python’s performance is just not enough. What other options do we have? Well, there’s for example GoLang Problem with GoLang is that th
At Trivadis Performance Days 2018 (awesome event by the way) I promised to deliver ODBV3 with support for ASM – and here it is! 🙂 https://github.com/ora600pl/odbv To use it, you have to have access to a user a
It has been crazy few months – organizing POUG2018 took a lot of energy but it was satisfying as hell! 😀 This weekend I had some time to prepare a new version of ODBV for Trivadis Performance Days 2018 where I
After my last article AMM vs security, Martin Berger wrote to me: well, even without AMM you can do it: write your own process which attaches to the same shm segments – and use its memory mapping (?) My respons
Most of us already know that AMM sucks. But usually, we think about disadvantages of AMM in terms of performance. Let’s see why it sucks in the terms of security 😉 Let’s create an encrypted tablespace for HR.E
In my last blog post I explained a XOR alghorithm that is used to count Oracle database block checksum. I also wrote, that sometimes you are facing problems, that are unresolvable without a low-level knowledge.
Recently I’ve started to write my own clone of BBED to have something handy and useful in extreme cases when you have to go deep and fix stuff on low level (I have only like 2 such cases a year but each time it
Some time ago I wrote a simple tool to learn about Oracle data block internals – ODBV. The series of articles can be found here: https://blog.ora-600.pl/?s=odbv&submit= and the github repo is here: https://gith