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.
MAbbey’s musings and thoughts about Sunday at COLLABORATE13
The goal of SQL Plan Management is to provide a consistent execution plan regardless of changes made to the database environment. While consistency is great in the face of changes to an environment, it is important not to miss out when changes would improve the runtime execution. SQL Plan Management has three components that meet this goal.
As per many previous IOUG/OAUG/Quest shows, Pythian is will be in Denver next week! It was a sunny day in the fall of 1991 when I gave my first paper at International Oracle User Week (IOUW), a pre-cursor to COLLABORATE and a few earlier incarnations called IOUG-Live and IOUG-Alive! It has been a whirlwind of…
There’s a rare event happening next week: All three of Pythian’s Oracle Apps tech leads will be in the same place. Vasu Balla, Maris Elsins, and recently-minted Oracle Ace Director Yury Velikanov will all be at Collab 13 this year. Since we’re a globally distributed, round-the-clock team, this is not something that can happen very often.
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.
First, the most important advice I can give you is to relax and have FUN! Personal Experience Until recently, most of the conferences I participated in were very stressful for me personally. My very first big conference was back in 2000 – the Oracle User Group conference in Copenhagen. Since then, I have participated in 1 or 2 conferences…
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 first article in a series about performance of concurrent processing. We’ll take a closer look at the internals of concurrent managers, the settings that affect their performance and the ways of diagnosing performance and configuration issues. Today we’ll start with an overview of the internal workflow of a concurrent manager process. Enjoy the reading!
When reviewing the performance of some queries, it is sometimes useful to review the sessions statistics for each execution of the query. I had a situation that required to look at these stats so I could see why one query would run fast and sometimes much slower. I wrote a simple wrapper ksh shell script for the query. It saves the session statistics in a table before and after the execution of the query and then prints out the statistics in a pivot report. This turned out to be very handy to me and therefore I chose to share it with the world :)