Free e-book giveaway: “Oracle Database XE 11gR2 Jump Start Guide” (Packt Publishing, 2012)

Last week I reviewed “Oracle Database XE 11gR2 Jump Start Guide” (Packt Publishing, 2012) in this post. Packt guys did like the review, and today I am pleased to announce that I will be giving away two free e-copies of the book. All you need to do is just comment below the post and win [...]

Book review: “Oracle Database XE 11gR2 Jump Start Guide” by Asif Momen

About a year ago Packt Publishing approached me and offered to write a book on (one of the technologies in) Oracle 11g. After careful consideration I had to decline the offer. Which was the right decision as I have hardly had any spare time in the past 12 months. However, Packt guys have kept in [...]

Tiny Tips: SSD and Linux. Enable TRIM and check if it works.

What is TRIM? On hard disks, with spinning magnetic platters, you don’t care if a particular sector is being used by the operating system or not. If you want to use it again, just ask the controller to write into it, and the controller will just overwrite whatever was in that sector. With SSD, if [...]

Install Oracle Express XE 11gR2 on Oracle Linux 6.1 x64. (No bitmap index conversion on the fly!)

Some time ago, if you said you had installed Linux and, heavens forbid, Oracle on Linux, you’d be considered an utter geek. Fast forward 15 year. These days, when people (who have experience with other databases and operating systems) ask me about Oracle/Linux, I feel somewhat embarrassed. Let me illustrate what I mean. Install Oracle [...]

Tiny tips: Use Gateways to connect Oracle database to Microsoft SQL Server

When you have two Oracle databases and want to exchange data between them, it is easily done via database links. So for your local database you would go select * from local_table and for the remote one select * from remote_table@link_to_remote_db But what if the remote database isn’t Oracle, what if it’s (for example) Microsoft [...]

1Z1-058 (1Z0-058 beta) 11g R2 RAC Expert. Answers.

Last week’s article on 1Z0-058 questions was quite popular, more popular than I expected. So if you enjoyed the questions, now it’s time to get some answers! (1) Kevin is a database administrator at Fictional Real Estate Co. All he hears everyday is location, location, location. He is asked by one of the Sales team [...]

1Z1-058 (1Z0-058 beta) 11g R2 RAC Administration Expert

If you get emails from Oracle University, you might have received a notification that 1Z1-058 (1Z0-058 beta) “Oracle 11g R2 RAC Administration” exam is now available. It earns you an 11g R2 RAC Oracle Certified Expert (OCE), but you need to be an 11g DBA Oracle Certified Professional (OCP) first to get that. If you [...]

Tiny tips: Mount linux distribution ISO and create local repository for yum

So you have this server that was built a few years ago, and you need to install a couple of rpms for whatever reason. Unfortunately the distro disk has been used as a coaster and cannot fulfill its original role. And then you think – why didn’t I create an ISO image on the local [...]

Building a database engine of our own. Part One. Connectivity.

Once upon a time (long time ago) I was consulting a small start-up. The nature of their business needed an SQL-like database with some specific features. The choice was between - 1. using an RDBMS for simple data storage and then developing those specific features on top of it, or 2. building an application that [...]

Interactive SVG example on iPad (iPhone) via Oracle PL/SQL Server Pages

A couple of weeks ago we talked about Flash on Android via Oracle APEX. Today let’s check the competitor’s offer. Unfortunately Apple products don’t support Flash. The good news however is that they do support SVG, as do most web browsers (IE7/8 is pluginable and IE9 is going to support it properly). I first came [...]