A year ago I described the basics of checkpoint queue latches: After writing that article, I attended an excellent lecture by Mike Dietrich and Daniel Overby Hansen about noisy neighbors in a multitenant environment and how to make PDBs quieter and easier to live with in a larger society. During that lecture I thought about […]
I know, I know – AI is stupid… but we shouldn’t be and LLM is a tool that we should get familiar with. That’s why JAS-MIN gets integration with AI in two modes – one-time batch processing and backend assistant. In this article we will focus on the first type of AI usage. Right now […]
We have no idea when Oracle 23ai will be released on premises. And it is a shame, since this database is offering a lot of great features that you probably would like to learn! One of the solutions is to use Oracle Cloud to learn, another is to use the Oracle Free version… but if […]
I know I know, it’s getting boring when I constantly talk and write about an evil KVM admin, but tomorrow starts our first meetup with IBM and they are going to explain why my hacks won’t work in Power environment – I can’t wait 😀 In the meantime I realized that I never published the […]
Not having Diagnostic Pack sucks. But event if you have it, it is not that obvious that you will be able to visualize properly the data and perform a meaningful analyze. That’s why I have created JAS-MIN! A little background: In my work I often have to analyze customer’s databases in order to understand overall […]
More and more customers are using fancy security tools like CyberArk or other solutions based on Windows RDP with turned off or limited possibility of copy/paste functionalities. And I get it. Security is really important topic and we should take it seriously. But from time to time you have to solve quickly some extremely important […]
This article is true for Oracle 19.19 and 19.23 on ARM. On x86_64 there’s something funny going on with location of the buffer address in the private memory (finding appropriate register at kcbklbc call)- I need a bit more time to compare those two compilations, but the idea is the same 🙂 During my journey […]
This is a pain in the ass. You try to import something from a newer database and you hit the error that your timestamp is not good enough! Even tho you have no timestamp datatypes in the dump… The whole case was covered by Mike Dietrich: Let me show you my – a little bit […]
We are continuing our journey as an evil KVM administrator who wants to mess with a tenants virtual machines. This time we will modify a binary execution code path by changing machine code opcodes in a running process! Let’s image a simple C program, that looks like this: This short code will show "You are […]