Feed aggregator

Another Oracle Donation to Open Source

Omar Tazi - Wed, 2005-12-21 19:38

This is exciting news web developers who believe in J2EE, so buckle up!

I am pleased to announce that Oracle is contributing a rich set of UI components based on the JavaServer Faces specification to the Apache Software Foundation under the Apache 2.0 license. The donation was originally part of Oracle ADF. What it will be called in the future is yet to be determined by the Apache MyFaces community.

What's in it for Oracle?

We like to get behind technologies we believe in. We think JSF holds great promise and Apache MyFaces is a great JSR-127 implementation. By supporting JSF and MyFaces we are hoping that more vendors are going to join us and strengthen the Faces community.

Why should I care?

I would say wait till you try it. This is going to give a big boost to the JavaServer Faces technology as well as the MyFaces project. The donated code comes with great functionality out of the box. How would you like to have high quality capabilities such as: file upload support, client-side validation, partial rendering of a page (AJAX-style), data tables, hierarchical tables, color/date pickers, progress indicators, menu tabs/buttons, internationalization and accessibility? This donation starts with more than 100 components which have already been thoroughly tested and come with high quality documentation.

How about tools?

Oracle developers are also leading the Eclipse JSF tooling project, we are going to make sure that this plug-in works well with MyFaces and its components to help J2EE developers develop and deploy great looking web applications using open source technology donated by Oracle.

After several months of effort, I'm very excited to see this donation go forward. We know that our donation is being placed in very good hands, and we look forward to seeing more components "blossom" as part of the Apache MyFaces project.

I'm Back!

Omar Tazi - Wed, 2005-12-21 19:29

I would like to apologize to my readers for being so quiet for the last couple of months. I've been too busy and on the road quite a bit. I had a chance to speak at the Gartner Open Source Summit in Florida as well as ApacheCon in San Diego. I hope you like the news in my next blog entry!

Comparing SDO and EJB 3

Mike Keith - Tue, 2005-12-20 23:35

There was a recent announcement made by a consortium of companies about SCA and SDO that can be found here. I have since been getting a few questions about what this means to EJB 3.0 and what the differences between SDO and EJB 3.0 are. There are also some misunderstandings and misinterpretings about what this implies with respect to continued support of the Java EE platform by these companies.

First off, to ensure the message is crystal clear, this does not mean that any of these companies are abandoning or reducing their support for the Java platform. SCA and SDO are complimentary technologies to Java EE, not competitors to them. They are geared towards SOA architectures in general as opposed to Java-specific web services, so in many ways they are generalizations of the model but with concrete API's. EJB components fit well into the SCA component model, and EJB persistence would do well to sit underneath the binding layer of SDO at the Data Access Service (DAS) layer. The companies that are involved in these specifications have all shown their strong support for Java EE and to the best of my knowledge (I can't speak for all of the companies, of course) have no plans to change that level of support.

Here are a few of the notable differences between the specs:

· SDO is the basis for an overall architecture while the EJB 3 Persistence API is simply what its name implies -- a persistence technology. SDO is the basis for an architecture because it does not cover all of the components that would be required for a complete platform. It seems to have been designed more for the upper application architecture layers, like SOA, but leaves all of the specific underlying technologies (except for XML!) unspecified. Services such as Data Access Services are mentioned, but are abstract. Other things such as transactions are not even mentioned. EJB 3, although not at the lowest level as something like JDBC, is definitely lower down on the technology stack.

· SDO is driven by a meta-model and has a very reflection-oriented look and feel. Its API's on DataObjects and DataGraphs offer reflective access of type and property metadata as well as concrete instance data. EJB has no meta-level API's. Entities are concrete and used by applications as simple unadorned Java objects, offering whatever they natively support as part of their domain level API.

· A great deal of effort, and most of the specification, deals with mapping between XML and the data objects. This is in keeping with its SOA focus and its attempts to be interoperable. Mappings to and from the XML may be generated in both directions. EJB does not have make any special considerations for interoperability, except as defined by underlying protocols such as IIOP and CORBA protocols that may be used by the application for communicating the objects.

· Objects in SDO are self-managing because they are always wrapping the actual domain data, even when they are detached. A DataObject or DataGraph is the surface object so wherever the object or object graph goes the operations are getting invoked on those wrapper objects. EJB entities are managed only when they are attached to an EntityManager. Only when operating on managed entities are the objects potentially wrapped. When objects become reattached is when the processing comes back into play to calculate changes and so forth. The difference is that SDO retains the heavier but more controlled objects throughout their entire life cycles, whereas EJB 3 entities are POJO's of the simplest kind if they become unmanaged.

· Object traversal in SDO is done using Xpath queries. This provides the abstraction to navigate through the various wrappers without having to issue all of the unwrapping calls at each level. EJB 3 objects are POJO's and are thus directly traversed using the domain API. The SDO model actually feels a little like the OODB's of old. There is no querying of objects except by traversal, as part of an XPath query or directly from one object to the next. It is unclear what the specified way of causing objects to be loaded on demand during traversal is (whether the DataGraph is supposed to go back to the DAS to get DataObjects that are not loaded).

Disabling CPUs on Linux- Part Two

Stefan Roesch - Sat, 2005-12-17 16:10
If the server is supporting Hyperthreading, Linux implements the following mechanism: First all the physical CPU's are enabled and then then the logical CPU's are enabledThis means that all the possible combinations can be enabled by specifying the maxcpu parameter in the boot command mentioned in the earlier post. For instance if the server has more than one physical CPU it is not possible to stefan roeschhttp://www.blogger.com/profile/15182787826739074738noreply@blogger.com2

Granularity of CPU statistics in V$SERVICE_STATS

Stefan Roesch - Tue, 2005-12-13 23:04
After making several tests it turns out that the "DB CPU" statistics in the view V$SERVICE_STATS only has a granularity of centiseconds despite what the documentation says.stefan roeschhttp://www.blogger.com/profile/15182787826739074738noreply@blogger.com1

Myself, Product of a State-Run School System

Denis Goddard - Tue, 2005-12-13 02:14
Ahhh yes. This is where I was Educated.

On a whim, I googled for my middle school. The school I attended from 1983-1985.
A decade before the Web happened. Of course, they now have a web page with
a "virtual tour." So of course, I poked in to take a look around.

The gem below is a recent creation from that Center of Learning I attended, Aldrich Middle School:

Our assistant Principal [...] is Bilingual. The languages he speaks are English, Spanish, and French.

I just HAD to share that.

Edited Dec 26, 2005 to fix an Element of Style oversight.

Disabling CPUs on Linux - Part One

Stefan Roesch - Fri, 2005-11-18 01:12
For running performance tests and to determine the potential benefit of additional CPUs it can be very helpful to be able to disable CPUs. CPU's can be disabled by adding the following clause to the kernel configuration line in the grub.conf configuration line:maxcpus=The placeholder NUM_CPUS has to be replaced with the number of CPUs that will be enabled. After re-booting with the stefan roeschhttp://www.blogger.com/profile/15182787826739074738noreply@blogger.com1

Disabling Hyper-Threading

Stefan Roesch - Fri, 2005-11-18 00:51
The use of Hyper-Threading for server applications is questionable, especially if the number of I/O requests is high. To determine the cost or the potential performance improvements it makes sense to disable the Hyper-threading (from known on abbreviated with HT) support. The are two ways to disable HT:Disable Hyper-Threading in the kernelDisable Hyper-threading by the BIOSIntel recommends to stefan roeschhttp://www.blogger.com/profile/15182787826739074738noreply@blogger.com0

Upgrade to RedHat AS 4.0

Stefan Roesch - Thu, 2005-11-17 23:39
Upgrading to RedHat 4.0 introduces some new challenges. With the switch to the 2.6 linux kernel the udev device filesystem was introduced. By default the udev device tree does not support raw devices anymore. Luckily it is still supported with the Redhat distribution. It can be configured in the old way with the rawdevices service configuration.To check if it is currently enabled run the stefan roeschhttp://www.blogger.com/profile/15182787826739074738noreply@blogger.com0

A few random recent notes

Denis Goddard - Mon, 2005-11-14 17:39
ADE Stuff
Well, the ADE 3.2.0 rollout happened, and was quite smooth indeed.
Sure, we have made 5 patches since then, and have some serious fixes that need to go in to make a Patch#6,
but by and large most people were not severely impacted.
Given that this was the largest ADE release ever, and indeed is the largest Bing-Bang single change we ever anticipate making, I'll go ahead and call it a smashing success! :)
Jiri did an awesome job sweating the details; Kevin's QA team did an awesome job testing it; Rahul made some awesome tools to manage the rollout; the Support team did an awesome job handling the issues.

Now the IDC folks seem to have a solid grip on the 3.2 branch, and finally, at long last, the HQ team is slogging through PL/SQL APIs for SCM10/ADE4.0
I'll be at HQ for a few seeks starting Nov 29th. I'm looking forward to getting my hands all over the whiteboard, and doing some good detailed design work.

NH/FSP Stuff
So much is happening! My friend Seth ran for School Board, and a bunch of us campaigned for him. He lost, but not by much, and some other FSP folks won their races, so cool.
I'm looking forward to hooking up with the SF Porcs while I'm in California, and hearing their tales of higher taxes and reduced freedoms just in the few months I've been gone.
Sandy (aka "Friday") is also a recent escapee from the People's Republic of California, she has been keeping a blog: http://fridaysblog.blogspot.com/

This weekend I'll be doing some Bill Triage -- enumarating which bills currently before the New Hampshire legislators are pro-liberty, and which are anti-liberty. With that list, we'll be lobbying both the legislature and the voters accordingly.

Now that I live in Concord, I'm looking forward to attending some of the legislative committee meetings. I also hope to testify before some of the committes, as a landowner and taxpayer :)

Gardner Goldsmith is one amazing guy. I absolutely love his radio show Against The Grain, it's quickly becoming an even bigger favorite than Free Talk Live!
Check it out: http://www.libertyconspiracy.com/
Oooh, and check out the Free Talk Live map, it's pretty cool: http://map.freetalklive.com

OK, back to work!

iExpenses wishlist

Jo Davis - Wed, 2005-11-09 18:50
Okay, here is my wishlist for today:
- When the CCID generated by the expense claim line is invalid it should do something useful at the time of entry, not wait for the expense claim to be submitted then notify the system administrator;
- The wording of the notifications should be easier to modify :) I hate workflow some days.

and the big one....

- Employees need to be able to pick the travel advance (prepayment) to apply against their expense claim!!!

And yep, I'm implementing iExpenses again. Off to sunny Melbourne next week to talk to someone about... you guessed it.... iExpenses. Plus off down the road to help another client with yet more iExpenses. The best part - all on different patch levels ;)

A Simple Chapter from the "Cost-Based Oracle Fundamentals" is available for download

Radoslav Rusinov - Wed, 2005-11-02 04:57
A simple chapter from the Jonathan Lewis's book is available for download at this address: Chapter 05: The Clustering FactorThe book will be available for shipping in 5th of November at Amazon online bookstore: Cost-Based Oracle FundamentalsRadoslav Rusinovhttp://www.blogger.com/profile/18163031714036680150noreply@blogger.com2

Happy Halloween

Denis Goddard - Mon, 2005-10-31 05:00
ADE 3.2.0 went live, I closed the purchase of a duplex in Concord New Hampshire, and the Motley Fool says Oracle is a good buy.


A Happy Halloween so far. I may even wear my Star Trek uniform to work.

We'll see how spooky it looks in a few hours, when thousands of HQ developers start pounding on ADE 3.2.0!

How to test our Oracle database environment for free

Radoslav Rusinov - Tue, 2005-10-25 01:12
If you want to benchmark your new Oracle9i/10g database environment before to put it in production as a part of your migration procedure, then may be you are one of these who are facing with the problem: How to test my database, where to find a proper tool or program and how much I must pay for that?I just want to share a links to several free programs that can help you to test your Oracle Radoslav Rusinovhttp://www.blogger.com/profile/18163031714036680150noreply@blogger.com1

EuroOSCON 2005

Omar Tazi - Mon, 2005-10-17 05:20
I just landed a couple of hours ago in Amsterdam after a rather smooth flight from SFO through Chicago O'Hare. I came here to attend EuroOSCON 2005. I am looking forward to this conference where I will also be speaking on Wednesday and reconnecting with all my OSS buddies. I am sure a lot of people are wondering what Oracle is doing for open source, my presenation will touch on this of course but I will also be at the Oracle booth answering questions. Feel free to stop by if you're around.

What did Oracle and Zend Announce this Week?

Omar Tazi - Thu, 2005-10-13 18:21

Earlier this week, Oracle and Zend announced general availability of Zend Core for Oracle. This is exciting news, yet another sign that Oracle understands OSS and how commercial software can complement open source. Oracle is doing all it can to help developers out there with the performance, reliability and robustness they need. Let me try to shed some light on this announcement by answering some of the questions I have been getting.

Who's Zend anyway?
Zend is really the PHP company. They have Andi Gutmans and Zeev Suraski on their payroll, they are Zend's founders and also the original developers who helped PHP founder Rasmus Lerdorf rewrite a new PHP parsing engine in 1997. Andi and Zeev created the very popular open source Zend Engine. Zend's products are used by 8,000 companies worldwide including Lufthansa, Avaya, Sprint, HP and Boeing.

What's Zend Core for Oracle?
Zend Core for Oracle provides out-of-the-box IT organizations with a stable, high performance, easy-to-install and supported PHP development and production environment fully integrated with the Oracle Database. Without Zend Core for Oracle customers had to download all the pieces individually (Apache server, PHP, Oracle DB…) and cobble it all together. This was a very tedious, unpredictable experience that serious enterprises did not want to go through. Zend Core for Oracle is a one stop shop where you get one install file and you know it's going to work and if god forbid, it doesn't you get support from Zend (for PHP-related issues) and Oracle (for database-related issues). Safe feeling, isn't it?

Why should I care? LAMP is FREE!
This is the most frequent question and the answer is very simple. If free was the only criterion, then why is Geronimo not everywhere and why is Oracle still showing strong DB and application server sales, etc.? The truth is, people care deeply about more important things. We worked with Zend to do this because their customers as well as ours wanted us to deliver a solution like Zend Core for Oracle. There are 18 million websites out there written in PHP, scripting languages are too popular today for Oracle to ignore them. Zend is the leader in PHP deployments. It's also important to note that 25-30% of their customers run on Oracle (not all of them are LAMP worshipers). Oracle and Zend noticed that many already had their data in Oracle databases when they started using PHP to write web application. They enjoyed the quick turnaround and easy to deploy experience they got out of PHP. Others come from the LAMP stack and want more stability, performance, security and reliability and moved to Oracle DB. Also organizations with a significant investment in Linux and Oracle now have the option to deploy PHP apps on top of these databases and worry less about the issue of drivers then they may have seen in past. Zend Core for Oracle delivers an updated PHP OCI8 driver, which both companies have worked hard to make more reliable and stable for Oracle Database-driven Web applications.

Have you heard of OPAL? Well it's an acronym just like LAMP but it stands for [Oracle, PHP, Apache and Linux]. Believe me, it is more popular than you think. Zend Core for Oracle is an OPAL system - technically an OPA, it also runs on IBM AIX, Sun Solaris and Windows (currently still in beta).

Bottom line: The real challenge for open source software is to provide the ease of use and a clear chain of accountability that IT organizations require for mission-critical systems. Zend Core is a good answer to that.

What happened to Oracle's commitment to Java/J2EE?
Today, you cannot think ONE language. This is the SOA age. Web services don't care what flavor the portal or the back-end business or persistence logic is written in? We don't need to pick a winner, we support open standards and interoperability. Also, we make sure we keep our finger on the pulse. Scripting languages particularly PHP are very popular, our customers use them, therefore we need to provide them with a pleasant/seamless experience to their job. We are more committed to Java/J2EE than ever, our app server is the fastest growing J2EE container in the market, our tools support the latest Java and J2EE specifications as soon as they are out (and most of the times before – EJB3.0 basis or RI in Glassfish for example).
PHP is actually interoperating quite nicely with Java on various levels. First we have been supporting PHP for 2 years in the Oracle application server. One can write a PHP page and deploy the HTML file on the Oracle container and it will be parsed and rendered seamlessly. Second, PHP5 (unlike PHP4) has great support for SOAP, this means Java can call PHP-based web services and vice versa. Also using BPEL PM, users can orchestrate Web services such that PHP-based partner links can call Java-based services. Finally there is a JSR we are planning to support as soon as it’s ready. It's JSR-223, Oracle and Zend are part of the expert group. It essentially allows Java to call scripting languages and vise versa. With all this in place in the Oracle stack, people could rapidly write PHP pages (if they choose not to use JSF or they already have existing PHP code) and easily talk to back-end business logic written in Java that makes DB calls.

OK, I'm interested where do I start?
I recommend the PHP technology Center on OTN (Oracle Technology Network). In there you'll find a bunch of links to useful resources including upcoming events, installation guides, articles, blogs, best practices and last but not least a link to download Zend Core for Oracle. Zend also has a page on their website specifically for people who are interested in Zend Core for Oracle: www.zend.com/core/oracle. Finally I will be speaking at OSCON next week on this topic. So if you're planning to be there, feel free to drop by the Oracle booth and ask all the questions you want. If you are in the bay area I highly recommend attending the Zend/PHP Conference. Definitely check out Oracle's Ken Jacobs (aka Dr DBA) who will talk about Zend Core for Oracle and the relationship between Zend and Oracle.

Microsoft Befriends Foe and Takes Aim at iTunes

Omar Tazi - Wed, 2005-10-12 23:20

Yesterday (10/11/05) Apple announced record numbers and amazing profits. A third of Apple's revenue comes from iPod sales. So Apple takes the music/media business very seriously. Today Steve Jobs unveiled a new video iPod along with a new complementary version of iTunes that allows people to buy music videos. To top all this Walt Disney and Apple Computer have reached an agreement under which ABC and Disney Channel television shows will be available for download from iTunes for $1.99 per episode. Apple is clearly on a media roll.

All this is beautiful, Right?

Not really. Microsoft astutely chose this moment to settle its problems with RealNetworks in a two-part deal under which Microsoft pays $460M in cash to RealNetworks to settle the antitrust claims and $301M in cash to support RealNetworks' music and games efforts. Microsoft will recoup money by earning credits (amounts were not disclosed) for each Rhapsody subscriber referred through MSN. RealNetworks will support MSN Search and Microsoft will be a huge channel for RealNetworks music and also assist in the performance of RealPlayer on Windows. Here is another big win for RealNetworks: users of MSN Messenger will be able to play music from the Rhapsody catalog of 1 million songs while chatting. More details on this deal can be found here.

Bottom line:
Apple has iTunes the leading online music store, as well as iPod the leading digital music player. I hate to say it but the benefit of the M$FT/RealNetworks alliance is interoperability and openness. The truth is that Apple's strategy is based on customer lock-in (in fact I am one of those locked-in customers). Apple does all it can to make sure people who buy music via iTunes play it on the iPod. Can they continue to do this and maintain market leadership? Microsoft and RealNetworks beg to differ. Let’s see how all this media business unfolds and what role will Yahoo and AOL play in this battle. So stay iTuned... or not.

Oracle Database 10g: Best Practices for Windows Deployments

Radoslav Rusinov - Tue, 2005-09-27 09:09
This presentation is given on the Oracle OpenWorld this year. You can download it from here: Oracle Database 10g: Best Practices for Windows DeploymentsAnother interesting presentation from OOW 2005 is this one: What They Didn't Print in the Doc - HA Best Practices by the Gurus from Oracle Maximum Availability Architecture TeamRadoslav Rusinovhttp://www.blogger.com/profile/18163031714036680150noreply@blogger.com0

Continuous Improvement vs. Delayed Perfection

Denis Goddard - Sun, 2005-09-25 13:10
Sometimes I get basted for the shortcomings of ADE. Sometimes, basted quite mercilessly. I accept such partially because, after all, I am The Guy Responsible.

But even more so, I accept it because I doubt that ADE's present limitations bother anyone more than they bother me.
I believe I know exactly what is wrong with ADE, both in terms of its current technical architecture, in and terms of the organization needed to properly develop and support it.

It's been a many-year battle to get to the point we're at today. The Proper Architecture is finally -- finally! -- actively being developed, under the name of ADE 4.0 and SCM10. I wish we could have worked on that architecture 7 years ago! The proper organizational structure first started coming together about this time last year, and now, with our Support and QA teams in Bangalore, with well-thought out and well-documented processes, and the with tools of Wiki and iSupport to support those processes, we're able to move forward.

Before coming to work at Oracle, I spent about 5 years working at Cummins Engine. Indeed, a few of the people now on my team (Purush, Rahul) worked with me at Cummins. Cummins was a great place, and I learned a lot there. A big part of what made it great was the attention to Total Quality. I won't bother explaining the full tenets of this religion here, but suffice to say, it's something that I see lacking inside Oracle. Well, my team and I are working to change that, by following Total Quality principles ourselves.

A great tenet of this "Total Quality" religion is:
Continuous improvement is preferable over indefinitely delayed Perfection
In other words, keep making things better with actions now, don't plan for a perfect world in some indefinite future. I have come to realize the wisdom of this philosophy, in everything from software to politics to marriage. I believe that ADE is at a tipping point, that ADE 3.2 will be a huge improvement, and that ADE 4.0 will be even better -- and very close to what I always wanted ADE to be.

Anyway, I didn't want to blather about all that, I wanted to share a rather enlightening little snippet from the Wall Street journal:

As engineers began cooperating and Mr. Srivastava's team worked
overtime to refine the tools, the quality of the code flowing into
Longhorn began to improve. The time to create a new "build" fell to
just a few days, allowing a faster cycle of writing and testing new


These guys take a few days to build their product -- and it's considered a major step forward?
Ooooh baby, I am so glad I am an investor in ORCL, and that I've invested my time in developing ADE!

Thanks for forwarding this to me, Jiri! :)

Oracle Database 10g Release 2 for Windows

Radoslav Rusinov - Fri, 2005-09-09 02:58
Oracle have released the official version of 10g R2 for Windows.The software can be downloaded from here: Oracle Database 10g DownloadsThe Windows-related documentation for R2 is already available as well: Oracle Database 10g Relase 2 Documentation LibraryRadoslav Rusinovhttp://www.blogger.com/profile/18163031714036680150noreply@blogger.com


Subscribe to Oracle FAQ aggregator