DBA Lounge

Oracle RAC on the Cloud, Part 2

In part 1 of this series, we talked about some of the challenges of setting up Oracle RAC on a public cloud provider, and went on to order some VMs from provider Gandi, and finally configuring a NFS server for shared storage. In this post, we move on to configuring the rac servers themselves, rac01 and rac02.

Oracle RAC on the Cloud, Part 1

I’ve been working on moving a lot of the testing and R&D work I do away from local virtual machines and onto cloud environments, for a few reasons: I can avoid carrying around a laptop all the time, and rather log onto the cloud wherever I happen to be It’s easy to scale down and…

How to Download Oracle Software Using WGET or CURL

This is yet another blog post with tips and tricks to help you (and me) download Oracle software without the help of a Web browser. If you Google “how to download Oracle with wget” you’ll find heaps of posts with useful tips. I decided to write this post to compile the methods I’m aware of…

Column Store Indexes in SQL Server 2012

Introduction: We will discuss Column Store Index and will try to understand the performance improvements of the same query by multiple times using column store index. What is Column store Index: Column Store Index is a feature introduced in SQL Server 2012 which helps us improve performance of data warehouse queries. It uses the VertiPaq, which stores…

Mining the AWR to Identify Performance Trends

Sometimes it’s useful to check how performance of a SQL statement changes over time. The diagnostic pack features provide some really useful information to answer these questions. The data is there, but it not always easy to retrieve it, especially if you want to see how the performance changes over time. I’ve been using three really…

Simple and Quick Way to Get SQL_ID of Query in Oracle

If you need to get SQL_ID of a query from a busy system, which has similar queries scattered all around, it becomes a hassle to get what you are looking for. If the query for which you are getting SQL_ID is big, or contains lots of apostrophes or other not-so-nice characters, then it becomes more…

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