Hey! Nice RAC!

What? Another post in less than a week? Yep! Don’t faint from shock! 😉  Besides, I’m overdue for a mostly serious post.  Oh and as for the title of this little post? Trust me. It could have been much, much worse. 😉  

Since we’ve had Oracle for a few months now and have one production Oracle system, I thought it’s about time to write a little of what I’ve learned so far. Granted, it’s probably enough to fill a thimble since I’m mainly still supporting SQL Server.  It seems a bit funny to me, in a way, but I’m learning about Oracle pretty much how I learned SQL Server – from experienced co-workers, reading, awesome people on Twitter (thank you!), more reading, and good old-fashioned playing around.

In case anyone is wondering, we are now owners of Oracle 11g R2 on Exadata Database Machines. So what’s an Exadata? It’s basically a super duper uber powerful storage server optimized specifically for Oracle Databases to run on. It appears a lot of processing is offloaded to the hardware. I’m not going to regurgitate all the nitty-gritty specs but you can read all about them here.

A Cluster O’ Fun

It's all fun and games until someone loses a node

We also have an Oracle cluster running on said Exadata box, and I believe there is a plan to get a data warehouse going on one as well. That sounds like it could be fun actually. I had also heard something about us possibly supporting SSAS (SQL Server Analysis Services) for a department. No, that won’t get confusing at all! The Oracle cluster is actually referred to as a RAC which stands for Real Application Cluster. It’s composed of something called Oracle Clusterware and Oracle ASM (Automatic Storage Management). Together they comprise the Oracle Grid Infrastructure. As I understand it, the Clusterware is what makes the cluster. No, really? What was your first clue?  That basically means you’ve got a database on shared storage and multiple servers can access it at the same time. If one node (host server) goes down, the other one(s) can still access it.  The ASM part is basically the file system and volume manager. It includes striping (automatic), mirroring (optional), rebalancing and so on. It basically manages the files for you so you don’t have to.

SQL vs Oracle

So what’s an Oracle cluster like compared to a SQL Server cluster? Sorry, but I really can’t tell you just yet. Yeah, I’m bummed too. When it comes to performance, it’s my understanding that there really isn’t anything out there to compare to an Exadata box. It’s fairly unique. Therefore, one can’t really compare this particular cluster to a SQL Server cluster in terms of performance and what have you. I honestly couldn’t tell you anything about its creation or setup since I wasn’t really all that involved. Hey, someone has to make sure the SQL Servers are still behaving. 🙂 Once I get a better grasp on it, I may be able to write something about it as compared to a cluster from a technical aspect but not performance-wise. Time will tell.  However, I would love to hear from anyone who has Exadata and/or RAC experience. 🙂

The Verdict?

A cookie by any other name is still a cookie... they just come in different flavors

So what do I think of Oracle so far?  You know how some relationships start off somewhat rocky? Well, this one isn’t any different. However, that’s not necessarily a bad thing. It’s just that I really haven’t had a lot of interaction with it just yet so I really haven’t had enough experience with it to say one way or the other. My initial impression is that it is way more involved and complicated to manage than SQL Server so far. That could just be me, though. Overall, I’m viewing this as a great opportunity to learn something new which is great since I love to learn new things.  🙂  In my opinion, relational databases should be fundamentally the same but with differences. Yes, some are quite different than others but once you have the basic concepts down it’s just a matter of figuring out and learning how to administer and deal with them in their environments which isn’t always that easy. But that’s just my opinion. 🙂


12 thoughts on “Hey! Nice RAC!

  1. An interesting discussion is worth comment. I think that you should write extra on this subject, it may not be a taboo topic however usually individuals are not sufficient to talk on such topics. To the next. Cheers

  2. They not only give you quick entry to all your sneakers, but they allow
    for you to manage them any way you like. Manufacturer names sell extremely well,
    but with these suppliers they are generally fakes or
    knock offs. When these recommendations are utilized it can drastically boost the size of time your clothes can last.

  3. いや、しかし、本当に参加したたくさんの関係者さんたちがチカラを合わせて作り上げた!感があって、「関わってみたい!」と思いましたさ。
    関係者からの懇意でいただきまして、せっかく(しかもお休みだった)なので、ウロウロとさせていただきました。

  4. あるときから「アレ似合わない?」というのに気がついた。
    一応、チケットはまぁまぁ良い位置でした。

  5. I like the helpful info you provide in your articles.
    I’ll bookmark your blog and check again here regularly. I’m quite certain I will learn plenty of new
    stuff right here! Best of luck for the next!

  6. miami heat harlem shake ‘ He pats the designs by the shoulder, ‘I’m sorry for your loss. Eventually, the capturing of the RQ-a hundred and seventy “Sentinel” spy drone by Iran in December 2011 gave Iran virtually a magic formula drone in incredibly great problem other than for the bottom 50 percent. There is a stipulation that if office losses more than enough individuals that it puts a strain on the division to sustain generation ranges, that we can implement HBingo employing processes to keep output degrees.

  7. mexico volcano 2013 ufo Some are damage and bloodied but no one particular would
    seem to be even worse off. The shopkeeper of a kiosk
    a couple of properties down, ways out & stares puzzled at
    them. As she ticks off in her to-do checklist, new demonstrates spring up.

  8. These bracelets, which are mostly sterling silver, became somewhat of
    a status symbol – who could have essentially the most charms.
    This just isn’t about casting aspersions on pawn shops, but basically about stating things the way they really should be stated. Crystal will be heavier as it contains a considerable amount of lead that contributes towards the weight.

  9. わたしも覚えがある節がありますね。正確に情報を知っているのと知らないのとでは、それが作り出す成り行きは大きく違ってくるとは承知していたはずでしたが、それが航空チケットについても当てはまるとは把握していませんでしたね。お値打ちの航空チケットに対して、一度に比べるホームページを従来使っていたのですが、そもそもまともに購入した方が安くなると気付いた時はショックでした。こういうことは、なんで一人として教えてくれないのでしょうね~。

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s