Posts Categorized: Technical Blog
This blog posts explains why Oracle Database Appliances re-imaging process timing may vary from 20 to 120 minutes. There are a check in the ISO:/Extras/setupodaovm.sh script that have an issue. Until the bug is fixed a) you may face different ODA nodes’ re-imaging times b) to be on the safe side check if md devices’ re-synchronization process is finished by running “cat /proc/mdstat” command before running any business critical processes on your ODA.
Sometime back I was involved in a project which was to collect information for the servers we are supporting – creating inventory of servers. Logging into each server and collecting information is bit tedious when you have hundreds of server in your environment. I have spent sometime and created a script that does this work…
Sometimes, it’s humongous revolutions. Most of the time, it’s an itsy bitsy evolutionary steps. Today’s hack definitively sits in the second category, but I have the feeling it’s a little dab of abstraction that is going to provide a lot of itch relief.
When I was in high school, my practical arts teacher asked us to create a miniature of a structure. This meant looking at the blueprints of an existing structure and using it to create a small replica. I thought that this would be a great opportunity to learn more about reading blueprints and understanding what…
Personal highlights from Collaborate 2013 in Denver. Discussion of networking with old and new friends, technical sessions (performance forecasting and multi-block read internals) and the Pythian RAC Attack class.
I was recently playing with an Oracle XE database. The main benefit of Oracle XE is that it can be used free of charge. And unlike the other database editions on the Oracle Technology Network, it is free the restrictions in the OTN license agreement that restrict products to “developing, testing, prototyping and demonstrating your…
This is a short blog post on how one can prove that a particular partition of the table or index is accessed by a specific query.
It is less than a week before the Collaborate 2013 conference. Most of us are busy putting together our individual agendas for what is shaping up to be a very exciting week. There are so many interesting sessions to choose from! Conference organizers kindly introduced a Show Planner to make planning a bit easier, but in this blog post, I will share with you how I created my agenda for Collaborate.
This is a very short blog post to share a good news I learned last week at the great New Zealand Oracle User Group 2013 conference. During a keynote Tom Kyte mentioned that Oracle is going to introduce a Temporary Undo.
This is the second article in a series about internals and performance of concurrent managers. In this post, we’ll take a look at three important settings that affect the performance of the concurrent managers: number of processes, “sleep seconds”, and “cache size”. This article might be a bit on the theoretical side, but it should provide a good understanding of how these settings actually affect the behavior and performance of concurrent managers.