Oracle

Log Buffer #294, A Carnival of the Vanities for DBAs

Log writer process of Oracle is one of the most revered background process, a real work horse, a real charming darling who keeps the whole Oracle database system consistent and humming beautifully and many technologies in Oracle sprout from this good old process. Consistency is the key in database systems, and so in the Log Buffer Editions, and this Log Buffer #294 continues it. And yes, the coolest 2012 PASS Summit is also there.

RMAN: Corrupt Block? Let’s Re-Read… Nope, It’s All Good

Just received a page about “Corrupt block”. From the first look it kind of scary to receive such page 40 minutes before your shift ends. Right?
After examining an alert.log (see below) and looking through knowledge bases found an explanation that it isn’t as bad as I thought. I liked the explanation I found therefore I decided to share it with rest of the world. Here you go folks

Pythian at Oracle with 20:20 Foresight Perth Australia

Perth is far from everywhere, but not far from the Oracle technologies. Passion, knowledge, and urge to share the experience, skills, tips and knowledge brought people from across the planet to gather under one roof and learn, educate and network under the banner of Oracle with 20:20 Foresight.

Select Statement Generating Redo and Other Mysteries of Exadata

Like many good stories, this one also started with an innocent question from customer: “I often check “SELECT COUNT(*) FROM TABLE;” on our old 10.2.0.4 cluster and the new Exadata. The Exadata is slower than our old cluster by few minutes. Exadata is not good at count(*) ? or other problem?” Here’s how I fixed it.

Reasons to Use ASM on NFS

My tweet few days ago – “Personally I don’t see the point building ASM on (d)NFS. ASM suppose to exclude unnecessary layers. In NAS case it adds an additional layer.” Since then Oracle people in my Social Media environment helped me to find several legitimate reasons to run ASM on NAS. Thank you folks very much. Now I am sharing our common thoughts with the rest of the community.

My Agenda for AUSOUG Conference in Perth

There is a very strong Oracle Community in Perth, Australia. I admire many Perth based Oracle User Group volunteers who year from your organizing a great Oracle event. This year it isn’t an exception. I just spent 30 minutes going through the program and I should say the lineup of speakers is very impressive. Here’s the schedule.

Oracle Direct NFS Configuration File Explained

While Oracle tech folks doing their best to explain meaning of not so many DNFS configuration file (oranfstab) parameters I still find an official description a bit confusing. Therefore I decided to share my understanding of the DNFS configuration parameters in hope that it will help someone or if my understanding is wrong someone corrects me :) So, if I am wrong please please please feel free to leave comments.

Oracle E-Business Suite News from OpenWorld 2012

I always followed all Oracle OpenWorld happenings through blogs, but this is the first OpenWorld that I physically attended. The blog post from Michael Abbey on tips for OOW first timers was a godsend for me. This helped me to navigate OOW like a pro. This is what I checked out..

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