Recommendations for learning RAC

I am looking to learn RAC and want some opinions of people who have had to learn it. I am proficient in 10g and 11G databases and certified in 11G. For instance, learning how to install and administer RAC is my goal. Would you recommend Oracles RAC class, books? I am contemplating setting up a two node rac system with some VM's at my house to test and work with it? Suggestions? Thanks in advance to any RAC expert.

Hi,
There are couples of good article how to install RAC on VM shared by other, you can easily find it by searching it.
and regarding to course you can start with http://education.oracle.com/pls/web_prod-plq-dad/db_pages.getCourseDesc?dc=D60491GC20
Hope it helps
Cheers

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Hello Gurus
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2) What is the recommended Private Cluster Interconnect for Oracle RAC ? GiG ethernet or SCI with RSM ?
3) How about the scenarios where one can have say 3 X Gig Ethernet V/S 2 X SCI , as their cluster's Private Interconnects ?
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5) what would happen to Oracle RAC if one of the Gigabit ethernet private interconnects fails
Have tried searching for this info but could not locate any doc that can precisely clarify these doubts that i have .........
thanks for the patience
Regards,
Nilesh

Answers inline...
Tim
Can any one pls confirm if it's possible to configure
2 or more Gigabit Ethernet interconnects ( Sun
Cluster 3.1 Private Interconnects) on a E6900
cluster ?Yes, absolutely. You can configure up to 6 NICs for the private networks. Traffic is automatically striped across them if you specify clprivnet0 to Oracle RAC (9i or 10g). That is TCP connections and UDP messages.
It's for a High Availability requirement of Oracle
9i RAC. i need to know ,
1) can i use gigabit ethernet as Private cluster
interconnect for Deploying Oracle RAC on E6900 ? Yes, definitely.
2) What is the recommended Private Cluster
Interconnect for Oracle RAC ? GiG ethernet or SCI
with RSM ? SCI is or is in the process of being EOL'ed. Gigabit is usually sufficient. Longer term you may want to consider Infiniband or 10 Gigabit ethernet with RDS.
3) How about the scenarios where one can have say 3 X
Gig Ethernet V/S 2 X SCI , as their cluster's
Private Interconnects ? I would still go for 3 x GbE because it is usually cheaper and will probably work just as well. The latency and bandwidth differences are often masked by the performance of the software higher up the stack. In short, unless you tuned the heck out of your application and just about everything else, don't worry too much about the difference between GbE and SCI.
4) How the Interconnect traffic gets distributed
amongest the multiple GigaBit ethernet Interconnects
( For oracle RAC) , & is anything required to be done
at oracle Rac Level to enable Oracle to recognise
that there are multiple interconnect cards it needs
to start utilizing all of the GigaBit ethernet
Interfaces for transfering packets ?You don't need to do anything at the Oracle level. That's the beauty of using Oracle RAC with Sun Cluster as opposed to RAC on its own. The striping takes place automatically and transparently behind the scenes.
5) what would happen to Oracle RAC if one of the
Gigabit ethernet private interconnects fails It's completely transparent. Oracle will never see the failure.
Have tried searching for this info but could not
locate any doc that can precisely clarify these
doubts that i have .........This is all covered in a paper that I have just completed and should be published after Christmas. Unfortunately, I cannot give out the paper yet.
thanks for the patience
Regards,
Nilesh

Copper cable / GigE Copper Interface as Private Interconnect for Oracle RAC

Hello Gurus
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Nilesh Naik
thanks

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Needed: Book(s) recommendations for beginner, needing to come up to speed for complexity quickly

Hello all,
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I thought I'd seen a recommendation for a book on this forum called: Labview for Everyone...but that is dated 2006...would this be too old since I'm working with LabView 2011?
Anyway, I'm looking through all the stuff in the NI site's Knowledgebase....but think getting a quality book that is a bit structured taking me from basics to more complex things would be the best way for me to learn and organize my thoughts.
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cayenne

Norbert_B wrote:
cayenne,
without giving any special suggestion, i want to point out:
Even "out dated" books can give you valuable information since the programming paradigm of LabVIEW (dataflow) is still valid.
Ok, we have to admit that information on certain elements as well as esp. performance might not be true because of the changes LV had undergone over the years (e.g. compiler changes in LV 2009/2010).
Adding to this, i urge you not only to look for technical expertise but also on "how do i approach a development task". I find this link a helpful source for this.
hope this helps,
Norbert
Thank you for the reply. I'm looking at the link and it looks informative.
I went ahead and bought the book LabView for everyone. One thing however, I read in one review, that the book is light on the topic of event driven vi''s......which is something I'm definitiely needing information on....simple examples would be even better.
Any links or book recommendations on this particular topic?
Thank you,
C

Recommendations for converting wma to mp3

Importing music into iTunes does not work with wma files. Is the best way to convert them to mp3? If so, any recommendations for an app? Thanks!

It's in the AppStore. That's where I got it.
One caviat. You CAN'T drag & drop files onto it to add them, you MUST use the "add" option, or it'll add the files multiple times. I had to learn that the hard way. Otherwise, it's fast and thorough.

Which antivirus product is recommended for the iMac?

Which antivirus product is recommended for the iMac?

OS X already includes everything it needs to protect itself from viruses and malware. Keep it updated with software updates from Apple.
A much better question is "how should I protect my Mac":
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Never install pirated or "cracked" software, software obtained from dubious websites, or other questionable sources. Illegally obtained software is almost certain to contain malware.
Don’t supply your password in response to a popup window requesting it, unless you know what it is and the reason your credentials are required.
Don’t open email attachments from email addresses that you do not recognize, or click links contained in an email:
Most of these are scams that direct you to fraudulent sites that attempt to convince you to disclose personal information.
Such "phishing" attempts are the 21st century equivalent of a social exploit that has existed since the dawn of civilization. Don’t fall for it.
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Disable Java in Safari > Preferences > Security.
Despite its name JavaScript is unrelated to Java. No malware can infect your Mac through JavaScript. It’s OK to leave it enabled.
Block browser popups: Safari menu > Preferences > Security > and check "Block popup windows":
Popup windows are useful and required for some websites, but popups have devolved to become a common means to deliver targeted advertising that you probably do not want.
Popups themselves cannot infect your Mac, but many contain resource-hungry code that will slow down Internet browsing.
If you ever see a popup indicating it detected registry errors, that your Mac is infected with some ick, or that you won some prize, it is 100% fraudulent. Ignore it.
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OS X viruses do not exist, but intentionally malicious or poorly written code, created by either nefarious or inept individuals, is nothing new.
Never install something without first knowing what it is, what it does, how it works, and how to get rid of it when you don’t want it any more.
If you elect to use "anti-virus" software, familiarize yourself with its limitations and potential to cause adverse effects, and apply the principle immediately preceding this one.
Most such utilities will only slow down and destabilize your Mac while they look for viruses that do not exist, conveying no benefit whatsoever - other than to make you "feel good" about security, when you should actually be exercising sound judgment, derived from accurate knowledge, based on verifiable facts.
Do install updates from Apple as they become available. No one knows more about Macs and how to protect them than the company that builds them.
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Recommendation for correct wide angle lens and flash for real estate photos for Canon Rebel T3i?

Hi I'm new to the forum. I always hire out a professional photog for my real estate photos however have thought that with the amount that I pay them, I could buy my own wide angle lens to do on my own.
Any recommendations for what wide angle lens and flash to buy?
Here are some examples of the work they have done in the past for me:
Any advice would be much appreciated. I enjoy amateur photography with my family and portraits but am hoping to be able to do more of my own work on my listings. Thanks!
Solved!
Go to Solution.

Your samples look like incredibility simple images to do. I also suspect little artificial light was added. Possibly just a bounce off the ceiling.
Since you already have a Rebel T3i, I would get the Canon 430 EX, and just one. But be aware it will likely not provide equal coverage for a 10-22mm lens. Ten millimeters is pretty wide even on a T3i. Bouncing off the ceiling will help this.
Some ceilings may not be good for bounce either.
Give it a go and you will learn what works and what not. But the old saying, KISS, applies. You will learn!
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Still think your photographer is overpaid?
EOS 1Ds Mk III, EOS 1D Mk IV EF 50mm f1.2 L, EF 24-70mm f2.8 L,
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Is this background helpful for learning Oracle11i?

I have some financial experience and I have got the Oracle database Manageemnt OCP certificate.
Is this background helpful for learning Oracle11i?
How much time should I spend, another OCP's time?

Hi Frank:
Having a background in the world of finance plus an OCP is certainly a very good start.
However, 11i is a very different thing to "normal" Oracle, and so, too, is being an 11i DBA. I wish I could point you to loads of good study material, but there isn't that much around.
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There is a website that may be of some use: http://becomeappsdba.blogspot.com/2006/07/installing-oracle-applications-become.html.
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Recommened book for learning PL/SQL

I've been trying to learn PL/SQL from Oracle's documentation, and I'm a bit tired of it.
All the information is there, but you really need to scan back and forth to collect all the bits you need. It is rather difficult.
Can you recommend a good book? I want to learn all the idea and concepts, not just the syntax. So please don't direct me to "Learn PL/SQL in 21 days".
Thanks.

It may be true that one can get away with documentation. However, it greatly depends on your background. If you learn language X, and this is your very first exposure to programming, you won't find documentation inspirational. You will suffer with badly chosen textbook too. As you progress, the matter of a good book becomes less and less important. You may find that for learning your second language you don't need a book, and this is especially true in the era of internet, when there is a great competition among web tutorials.
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Any recommendations for virus protection software.

Looking for recommendation for virus, malware protection for iMac running Maverick

Here it is again.
Many third party "anti-virus" programs only cause misery, and account for the vast majority of user-inflicted Mac problems reported on this site.
OS X already includes everything it needs to protect itself from viruses and malware. Keep it updated with software updates from Apple.
A much better question is "how should I protect my Mac":
Never install any product that claims to "speed up", "clean up", "optimize", or "accelerate" your Mac. Without exception, they will do the opposite.
Never install pirated or "cracked" software, software obtained from dubious websites, or other questionable sources. Illegally obtained software is almost certain to contain malware.
Don’t supply your password in response to a popup window requesting it, unless you know what it is and the reason your credentials are required.
Don’t open email attachments from email addresses that you do not recognize, or click links contained in an email:
Most of these are scams that direct you to fraudulent sites that attempt to convince you to disclose personal information.
Such "phishing" attempts are the 21st century equivalent of a social exploit that has existed since the dawn of civilization. Don’t fall for it.
Apple will never ask you to reveal personal information in an email. If you receive an unexpected email from Apple saying your account will be closed unless you take immediate action, just ignore it. If your iTunes or App Store account becomes disabled for valid reasons, you will know when you try to buy something or log in to this support site, and are unable to.
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Java, a non-Apple product, is a potential vector for malware. If you are required to use Java, be mindful of that possibility.
Disable Java in Safari > Preferences > Security.
Despite its name JavaScript is unrelated to Java. No malware can infect your Mac through JavaScript. It’s OK to leave it enabled.
Block browser popups: Safari menu > Preferences > Security > and check "Block popup windows":
Popup windows are useful and required for some websites, but popups have devolved to become a common means to deliver targeted advertising that you probably do not want.
Popups themselves cannot infect your Mac, but many contain resource-hungry code that will slow down Internet browsing.
If you ever see a popup indicating it detected registry errors, that your Mac is infected with some ick, or that you won some prize, it is 100% fraudulent. Ignore it.
Ignore hyperventilating popular media outlets that thrive by promoting fear and discord with entertainment products arrogantly presented as "news". Learn what real threats actually exist and how to arm yourself against them:
The most serious threat to your data security is phishing. To date, most of these attempts have been pathetic and are easily recognized, but that is likely to change in the future as criminals become more clever.
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Never install something without first knowing what it is, what it does, how it works, and how to get rid of it when you don’t want it any more.
If you elect to use "anti-virus" software, familiarize yourself with its limitations and potential to cause adverse effects, and apply the principle immediately preceding this one.
Most such utilities will only slow down and destabilize your Mac while they look for viruses that do not exist, conveying no benefit whatsoever - other than to make you "feel good" about security, when you should actually be exercising sound judgment, derived from accurate knowledge, based on verifiable facts.
Do install updates from Apple as they become available. No one knows more about Macs and how to protect them than the company that builds them.
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Which book is good for learning java?

1. Introduction to Java Programming, Comprehensive (8th Edition)
2. Core Java(TM), Volume I--Fundamentals (8th Edition)
Or others?
I haven't any programming experience!
Thank you!

This is the set of often recommended resources:
TheList?
[Sun's basic Java tutorial|http://java.sun.com/docs/books/tutorial/]
[Sun's New To Java Center|http://java.sun.com/learning/new2java/index.html]
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jGuru
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JavaRanch
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[Yawmarks List|http://forums.devshed.com/java-help-9/resources-for-learning-java-249225.html]
[The Java Developers Almanac|http://www.amazon.com/exec/obidos/tg/detail/-/0201752808?v=glance]
[http://javaalmanac.com|http://javaalmanac.com]
Bruce Eckel's [Thinking in Java(Available online.)|http://mindview.net/Books/DownloadSites]
Joshua Bloch's [Effective Java|http://www.amazon.com/Effective-Java-2nd-Joshua-Bloch/dp/0321356683]
Bert Bates and Kathy Sierra's [Head First Java|http://www.amazon.com/exec/obidos/tg/detail/-/0596004656?v=glance]
James Gosling's [The Java Programming Language|http://www.amazon.com/Java-TM-Programming-Language-4th/dp/0321349806/ref=sr_1_1?ie=UTF8&s=books&qid=1247059012&sr=1-1]
Gosling is the creator of Java. It doesn't get much more authoritative than this.
Joshua Bloch and Neal Gafter [Java Puzzlers.|http://www.javapuzzlers.com/]

Recommendations for learning RAC

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