ALL POSTS

Minimal Downtime Option for Upgrading Oracle 9i/10G Databases to 11G

Often, a hardware is updated at the same time as a database version. In such cases, we migrate a database from an original location to a new server upgrading the database version and sometimes changing operational system. If this is your situation, you can use the upgrade process to minimize the system’s downtime to 1 hour, independently from the size of the database you migrate.

A First Foray Into Hadoop Territory

Before I dig into the mechanics under the hood of the Hadoop beastie (which is the part, I assume, that is going to be heady as hell), I thought it would be a good idea to play a little bit with some of its applications to give me a feel for the lay of the land.

Interval Partitioning and Parallel Query Limit Access Paths

Interval partitioning – this ability to create partitions on the fly was introduced in 11g. When the feature came out, there were several nasty bugs. One such particular “limitation” has to do with parallel group by on the partition key. If you want to see just that part, skip towards the end, but I think reading the whole post will offer some insight on how Oracle Parallel Query works.

Building Web Service APIs

A couple of years back, I created WWW::Ohloh::API because it seemed to be a fun thing to do. And trust me, it was. But now, since I’m not using that module personally, I thought it would be a good idea to see if anyone would be willing to co-maintain it. Before I could do that, though, I had to deal with two little problems.

First MySQL/NoSQL/Cloud Latin American Conference

My impressions: Considering that this conference was the first one of its kind in Argentina, I have to say it was great. Small, but great. Not many people knew about the event, but the response was still pretty good. It was a 3-day event with plenty of technical discussions and sessions, and some other sessions came from companies who wanted to share experiences and impressions on what is coming for MySQL technologies.

Oracle Direct NFS: How to Start

First of all, if you are using NFS to store Oracle database data files, I strongly advise you to enable Oracle Direct NFS (DNFS) to access these files. However, if you are not using NFS, DNFS is probably not of interest to you, and you should stop reading here. But, if you want to set it up, let’s go!

Page 61 of 256« First...102030...5960616263...708090...Last »