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  • GoF Design Patterns - which ones do you actually use?

    - by CraigS
    I'm trying to educate my colleagues in the area of design patterns. Some of the original Gang of Four patterns are a little esoteric, so I'm wondering if there is a sub-group of "essential" patterns that all programmers should know. As I look through the list, I think I've probably used - Abstract Factory Factory Method Singleton Bridge Facade Command Which ones do you actually use in practice, and what do you use them for? Link for those wanting a list of patterns

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  • ArchBeat Link-o-Rama for 2012-05-31

    - by Bob Rhubart
    Eclipse DemoCamp - June 2012 - Redwood Shores, CA wiki.eclipse.org Oracle HQ 10 Twin Dolphin Dr. Redwood Shores, CA Presentations: The evolution of Java persistence, Doug Clarke, EclipseLink Project Lead, Oracle Eclipse Project Sapphire, Konstantin Komissarchik, Sapphire Project Lead, Oracle Developing Rich ADF Applications with Java EE, Greg Stachnick, Oracle Leveraging OSGi In The Enterprise, Kamal Muralidharan, Lead Engineer, eBay NVIDIA Nsight Eclipse Edition, Goodwin (Tech lead - Visual tools), Eugene Ostroukhov (Senior engineer – Visual tools)   BI Architecture Master Class for Partners - Oracle Architecture Unplugged blogs.oracle.com June 21, 2012 This workshop will be highly interactive and is aimed at Oracle OPN member partners who are IT Architects and BI+W specialists. This will be a highly interactive session and does not involve slide presentations or product feature details, it addresses IT-Architectural issues and considerations for the IT-Architect Community. 2012 Oracle Fusion Middleware Innovation Awards - Win a FREE Pass to Oracle OpenWorld 2012 in SF www.oracle.com Share your use of Oracle Fusion Middleware solutions and how they help your organization drive business innovation. You just might win a free pass to Oracle Openworld 2012 in San Francisco. Deadline for submissions in July 17, 2012. IT professionals: Very much the time to change our approach | Andy Mulholland www.capgemini.com This final post by retiring Capgemini CTO blogger Andy Mulholland is a must-read for anyone in IT. 10 Great WebCenter Sites Resources (FatWire) | John Brunswick www.johnbrunswick.com John Brunswick shares "some good resources that span the WebCenter Sites and FatWire brands, to get a consolidated list of helpful destinations for ongoing education." Cloning a WebCenter Portal Managed Server | Maiko Rocha blogs.oracle.com WebCenter and ADF A-Team blogger Maiko Rocha shows how to easily add a new managed server to a single-node domain to make it a cluster. Sorting and Filtering By Model-Based LOV Display Value | Steven Davelaar blogs.oracle.com How-to by WebCenter and ADF A-Team blogger Steven Davelaar. Designing and Developing Cross-Cutting Features | Stephen Rylander www.infoq.com Architects are often tasked with a business feature that must span systems. This article by will provide strategies to handle the change and guide your thinking about separating system boundaries and what that means for your technical design. Thought for the Day "A committee is a group of people who individually can do nothing, but who, as a group, can meet and decide that nothing can be done." — Fred Allen (5/31/1894 – 3/17/1956) Source: Brainy Quote

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  • NFS server generating "invalid extent" on EXT4 system disk?

    - by Stephen Winnall
    I have a server running Xen 4.1 with Oneiric in the dom0 and each of the 4 domUs. The system disks of the domUs are LVM2 volumes built on top of an mdadm RAID1. All the domU system disks are EXT4 and are created using snapshots of the same original template. 3 of them run perfectly, but one (called s-ub-02) keeps on being remounted read-only. A subsequent e2fsck results in a single "invalid extent" diagnosis: e2fsck 1.41.14 (22-Dec-2010) /dev/domu/s-ub-02-root contains a file system with errors, check forced. Pass 1: Checking inodes, blocks, and sizes Inode 525418 has an invalid extent (logical block 8959, invalid physical block 0, len 0) Clear<y>? yes Pass 2: Checking directory structure Pass 3: Checking directory connectivity Pass 4: Checking reference counts Pass 5: Checking group summary information /dev/domu/s-ub-02-root: 77757/655360 files (0.3% non-contiguous), 360592/2621440 blocks The console shows typically the following errors for the system disk (xvda2): [101980.903416] EXT4-fs error (device xvda2): ext4_ext_find_extent:732: inode #525418: comm apt-get: bad header/extent: invalid extent entries - magic f30a, entries 12, max 340(340), depth 0(0) [101980.903473] EXT4-fs (xvda2): Remounting filesystem read-only I have created new versions of the system disk. The same thing always happens. This, and the fact that the disk is ultimately on a RAID1, leads me to preclude a hardware disk error. The only obvious distinguishing feature of this domU is the presence of nfs-kernel-server, so I suspect that. Its exports file looks like this: /exports/users 192.168.0.0/255.255.248.0(rw,sync,no_subtree_check) /exports/media/music 192.168.0.0/255.255.248.0(rw,sync,no_subtree_check) /exports/media/pictures 192.168.0.0/255.255.248.0(rw,sync,no_subtree_check) /exports/opt 192.168.0.0/255.255.248.0(rw,sync,no_subtree_check) /exports/users and /exports/opt are LVM2 volumes from the same volume group as the system disk. /exports/media is an EXT2 volume. (There is an issue where clients see /exports/media/pictures as being a read-only volume, which I mention for completeness.) With the exception of the read-only problem, the NFS server appears to work correctly under light load for several hours before the "invalid extent" problem occurs. There are no helpful entries in /var/log. All of a sudden, no more files are written, so you can see when the disk was remounted read-only, but there is no indication of what the cause might be. Can anyone help me with this problem? Steve

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  • Speaking At The Chicago Code Camp

    - by Tim Murphy
    I just got news that my talk on Office Open XML has been accepted for the Chicago Code Camp.  I hear that they will be announcing the full schedule of sessions soon.  Be sure to register and join us.  As a bonus the guys from .NET Rocks will be there. http://www.chicagocodecamp.com del.icio.us Tags: .NET Rocks,Chicago Code Camp,Speaking,OOXML SDK 2.0,OOXML,Office Open XML,PSC Group

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  • Como estão os seus projetos em TI? ALM (Application lifecycle management) - Parte 1

    - by johnywercley
    O gráfico mostra um número assustador, em outras palavras, no mundo inteiro as coisas não andam bem, são pesquisas feitas por um importante orgão o “Stand Group”. Eles nos chamam atenção a quantidade de projetos com problemas, fazendo uma análise primária, somando a parte verde com azul veremos a porcentagem de projetos TI com problemas, projetos que chegam a de fato dar certo, são os de cores vermelhas, um número muito baixo. Se você fosse hoje investidor financeiro e tivesse que fazer um projeto...(read more)

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  • Windows 8 Promises Less Painful Security Updating

    Earlier this week, a company representative noted that Windows users can look forward to a more streamlined updating process that reduces pesky restarts that often cause interruptions at some of the most inconvenient times. In a MSDN blog post, Windows Update group program manager Farzana Rahman discussed the ways in which automatic updating in Windows 8 will provide an enhanced user experience characterized by minimal interruptions. Rahman acknowledged that the automatic updating process and restarts is one of hot topics that often comes up with Windows due to the untimely interruptions that...

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  • drda protocol specs

    - by Alon Rew
    When connecting to a server using the DRDA protocol, is it true that the first Client-To-Server command MUST be EXCSAT chained with ACCSEC? I found 2 different answers when I googled it. If you look at The Open Group web site (https://collaboration.opengroup.org/dbiop/) it can be understood that the answer is NO. However, if you look at the IBM website (http://publib.boulder.ibm.com/infocenter/dzichelp/v2r2/index.jsp?topic=%2Fcom.ibm.ims11.doc.apr%2Fims_ddm_excsat.htm) you can understand the answer is YES. So which is it?

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  • 24HOP gets off to a good start

    - by Rob Farley
    Session 11 is on as I write this – Ami Levin presenting about Primary Keys. It’s a good session. But actually, they’ve all been excellent so far, not just Ami’s. I’ve heard only good things about the content. So if you’re reading this and 24HOP is still on, then tune in and take part. If it’s finished, get yourself over to http://sqlpass.org/24hours and see if the sessions have been made available on-demand. Yes – you should be able to watch the sessions when you want to for a year. Watching live is best, because you can ask questions and have them answered during the session, but if there are ones you just couldn’t make, then watching them on-demand is a good option. Numbers have been “not bad”. At the moment it’s still the middle of the night for most Americans – about 6:30am in New York, and yet we’ve had well over a hundred at all the sessions so far, getting up to well over 300 for some sessions. And when I look through the list of names, I see a bunch of names that suggest we’re reaching people from all around the world. I’m seriously looking forward to seeing the stats about which countries have been represented in the audiences. There have been a few comments about the platform. Everyone seems to consider IBTalk an improvement on LiveMeeting, but the closed captioning has met a mixed reception. Some people are loving it, whereas other people are finding the translations leave quite a bit of space for improvement. If you have feedback on this, please feel free to drop me an email (my name with an underscore at hotmail.com, or with a dot at sqlpass.org should reach me just fine, or Twitter, etc). I don’t know how many of the sessions I’ll get to watch overnight – but I’m looking forward to seeing how things go as the day progresses. Big thanks to everyone who’s involved – the sponsors, PASS HQ team and the IBTalk folk who have stayed up overnight to facilitate, plus the moderators, the people doing the live captioning, and of course the speakers and attendees. I love how the SQL Community gets behind things like this. Earlier, the Adelaide SQL Server User Group gathered and watched Denny Lee’s session on BigData, and everyone in the group agreed that it worked really well. I took a picture of our cinema room, although you could only see a small section of the audience. @rob_farley

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  • MSDN Magazine: Patterns for High Availability, Scalability, and Computing Power with Windows Azure

    In this article, Joshy Joseph, a principal architect with Microsoft Services Managed Solutions Group, examines the typical cloud platform architecture and some common architectural patterns, along with their implementation on the Windows Azure offering from Microsoft....Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • Report: Systems Engineer Is Best IT Job

    San Francisco-based research and analysis group, Focus, has named systems engineer as the "best job in America."...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • Filtering option list values based on security in UCM

    - by kyle.hatlestad
    Fellow UCM blog writer John Sim recently posted a comment asking about filtering values based on the user's security. I had never dug into that detail before, but thought I would take a look. It ended up being tricker then I originally thought and required a bit of insider knowledge, so I thought I would share. The first step is to create the option list table in Configuration Manager. You want to define the column for the option list value and any other columns desired. You then want to have a column which will store the security attribute to apply to the option list value. In this example, we'll name the column 'dGroupName'. Next step is to create a View based on the new table. For the Internal and Visible column, you can select the option list column name. Then click on the Security tab, uncheck the 'Publish view data' checkbox and select the 'Use standard document security' radio button. Click on the 'Edit Values...' button and add the values for the option list. In the dGroupName field, enter the Security Group (or Account if you use Accounts for security) to apply to that value. Create the custom metadata field and apply the View just created. The next step requires file system access to the server. Open the file [ucm directory]\data\schema\views\[view name].hda in a text editor. Below the line '@Properties LocalData', add the line: schSecurityImplementorColumnMap=dGroupName:dSecurityGroup The 'dGroupName' value designates the column in the table which stores the security value. 'dSecurityGroup' indicates the type of security to check against. It would be 'dDocAccount' if using Accounts. Save the file and restart UCM. Now when a user goes to the check-in page, they will only see the options for which they have read and write privileges to the associated Security Group. And on the Search page, they will see the options for which they have just read access. One thing to note is if a value that a user normally can't view on Check-in or Search is applied to a document, but the document is viewable by the user, the user will be able to see the value on the Content Information screen.

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  • Archbeat Link-O-Rama Top 10 Facebook Faves for October 13-19, 2013

    - by OTN ArchBeat
    The list below represents that Top 10 most popular items shared on the OTN ArchBeat Facebook Page for the week of October 13-19, 2013, as determined by the clicks, likes, and other activities among the 4,425 fans of that page. Going Mobile with ADF – Implementing Data Caching and Syncing for Working Offline | Steven Davelaar Oracle Fusion Middleware A-Team solution architect Steven Davelaar takes you on a deep dive into how to use ADF Mobile to create an on-device application that supports working in offline mode. OOW 2013 Summary for Fusion Middleware Architects & Administrators | Simon Haslam Oracle ACE Director Simon Haslam shares a very thorough and detailed summary of the most interesting news coming out of Oracle OpenWorld 2013 for Fusion Middleware architects and administrators. Coherence Special Interest Group (SIG) – Sydney, October 24th If you're in the neighborhood... The Coherence Special Interest Group (SIG) in Sydney, Australia will be held on Thursday October 24th at the Park Hyatt Sydney, in The Rocks, between 9am and 5pm. The event will include presentations from customers, partners, and Coherence engineering team members and product managers. Click the link for more info. Free eBook: Oracle Multitenant for Dummies Oracle Multitenant for Dummies is a new e-book that provides a clear overview of the Oracle Database 12c multitenant architecture. It's free (registration required). Oracle BI Apps 11.1.1.7.1 – GoldenGate Integration - Part 1: Introduction | Michael Rainey Michael Rainey launches a series of posts that guide you through "the architecture and setup for using GoldenGate with OBIA 11.1.1.7.1." Enriching XMLType data using relational data – XQuery and fn:collection in action | Lucas Jellema Another detailed technical post from the always prolific Oracle ACE Director Lucas Jellema. Webgate Reverse Proxy Farm | Vinay Kalra Vinay Kalra's blog post discusses architecture and recommendations for centralizing Webgate deployments onto a server farm. Free Poster: Adaptive Case Management in Practice Thanks to Masons of SOA member Danilo Schmiedel for providing a hi-res copy of the Adaptive Case Management poster, now available for download from the OTN ArchBeat Blog. Should your team use a framework? | Sten Vesterli "Some developers have an aversion to frameworks, feeling that it will be faster to just write everything themselves," observes Oracle ACE Director Sten Vesterli. He explains why that's a very bad idea in this short post. Integrating Custom BPM Worklist into WebCenter Portal | Andrejus Baranovskis Oracle ACE Director Andrejus Baranovskis shares a sample application configured to run a custom BPM Worklist, and shares steps describing how to configure and access it from the WebCenter Portal. Thought for the Day "Morning comes whether you set the alarm or not." — Ursula K. Le Guin (Born October 21, 1929) Source: brainyquote.com

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  • Chem eStandards 5.1 in Public Review

    - by michael.rowell
    The Open Applications Group has announced the opening of the 45 day public review period for Chem eStandards version 5.1. Interested parties have until 13 July to submit comments. There will be two webinars review sessions on 23 June and 24 June. The details of the webinars will be available soon. You can download the Chem eStandards review package. If you have any questions, contact Jim Wilson, the OAGi Chemical Council Architect.

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  • Google Books - Online Literacy Database

    The idea of Google Books was first conceived in 2002 when a small group of Google programmers started pondering the question of how many man hours it would take to scan every single book ever written... [Author: Chris Holgate - Computers and Internet - March 29, 2010]

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  • Stardock Fences

    - by guybarrette
    I installed the free Fences utility program by Stardock today.  What a cool way to group and organize your desktop icons. Here’s my desktop with a bunch of icons grouped in fences. var addthis_pub="guybarrette";

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  • OBI & P6 Analytics Demo @ MAOAUG

    - by mark.kromer
    Mark will be speaking in King of Prussia, outside of Philly, for the Mid-Atlantic Oracle Apps Users Group on Oracle BI w/P6 Analytics for IT projects this Friday: http://www.maoaug.org. Stop by and say HI if you are in the area!

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  • Oracle E-Business Suite Release 12 GM Speaks

    Murali Subramanian, Group Vice President and General Manager of Oracle's E-Business Suite Applications, discusses with Cliff the latest updates to Oracle's E-Business Suite Release 12 including benefits to all customers and why customers should consider upgrading.

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  • Crawling a Content Folio

    - by Kyle Hatlestad
    Content Folios in WebCenter Content allow you to assemble, track, and access a logical group of documents and/or links.  It allows you to manage them as just a list of items (simple folio) or organized as a hierarchy (advanced folio).  The built-in UI in content server allows you to work with these folios, but publishing them or consuming them externally can be a bit of a challenge.   [Read More]

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  • Uploaded Four New ADF Examples

    - by Steve Muench
    I've uploaded four new examples for your learning pleasure:  162. Set Binding to Attr Value from Selected SelectBooleanRadio Button in Data-Driven Button Group 163. Binding SelectBooleanRadio to True/False Value in DB Row 164. Method Action Invoking Managed Bean Method Without Making Bean a DataControl 165. Using a Headless Taskflow to Perform Work in an Autononmous Transaction Enjoy.

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  • Attend COLLABORATE 11 Virtualy

    - by david.stokes(at)oracle.com
    Stay connected to one of the leading Oracle training and educational events - COLLABORATE 11 - IOUG Forum. Join virtually by attending Plug-In to Orlando for just $299.  Oracle and other leading industry experts will present over 40 hours of live presentations on topics such as Database, Development, Business Intelligence, Security, Data Warehousing and more.For a full list of scheduled Plug-in sessions, click here. Register now and enter the priority code PC07 to claim your group license

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  • Intel fait durer le suspens sur Sandy Bridge en délivrant les informations au compte-gouttes sur la

    Intel fait durer le suspens sur Sandy Bridge En délivrant les informations au compte-gouttes sur la future micro-architecture de ses processeurs Sandy Bridge est le successeur de Nehalem, la micro-architecture utilisée par Intel pour ses processeurs. Bien qu'on en sache encore assez peu sur cette nouvelle technologie, elle fait d'ores et déjà couler beaucoup d'encre. La stratégie de communication d'Intel, qui délivre les informations au compte-gouttes, n'y est certainement pas pour rien. Lors des derniers Intel Developer Forum (IDF) qui vient de s'achever, David Perlmutter - Executive Vice President Intel Architecture Group - a néanmoins laissé filtrer quelques indices :

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  • Apprentice Boot Camp in South Africa (Part 1)

    - by Tim Koekkoek
    By Maximilian Michel (DE), Jorge Garnacho (ES), Daniel Maull (UK), Adam Griffiths (UK), Guillermo De Las Nieves (ES), Catriona McGill (UK), Ed Dunlop (UK) The Boot Camp in South Africa was an amazing experience for all of us. The minute we landed, we were made to feel at home from our host Patrick Fitzgerald. The whole family who run the Guest House were also very friendly and always keen to help us. Since we had people from South Africa to show us all the amazing sights and their traditional ways to live their lives, the two weeks were very enjoyable for all of us and we came much closer together as a group. You can read this in the following parts of this report. Enjoy! The first group of Apprentices in Oracle (from left to right): Maximilian Michel (DE), Jorge Garnacho (ES), Daniel Maull (UK), Adam Griffiths (UK), Guillermo De Las Nieves (ES), Catriona McGill (UK), Ed Dunlop (UK) The Training Well, it’s time to talk about the main purpose of our trip to South Africa: the training. Two weeks, two courses. Servers and Storage. Two weeks to learn as much as possible and get the certificate. First week: Eben Pretorius with Servers Boot Camp. Learning about: • Machines: T1000, T2000, T3, T4, M series; • How to connect to the machines: serial and network connections; • Levels of software: ALOM, ILOM, OBP and of course the operating system, Solaris Combined with the practical part (screwdriver in one hand, and antistatic wristband on the other) makes quite a lot of stuff! But fortunately, Eben was able to tell us about everything without making our brains explode. For the second week: Storage Boot Camp with Deon Van Vuuren. Taking a look at the content: • Storage machines; • Connectors and protocols: SCSi, SAS, SATA Fiber Channel. Again, huge amounts of information, but Deon definitely did a great job and helped us learn it all. At the end, there was just one question left. Were we able to pass the exam and get the certificate? Well, what can we say? Just take a closer look at the picture above and make your conclusions! Our lovely Oracle office in Woodmead (near Johannesburg) We are all very proud to receive certification in “Server and Storage Support Fundamentals” together with our trainer Deon Van Vuuren. In summary, in case that you don't remember any of the above, the allies for a field engineer are: • System Handbook • EIS-DVD • A proper toolkit With these tools by our side, we’ll be unbeatable!  In the next article later this week, you can find part 2 of our experiences!

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  • When connecting to a server using the DRDA protocol, is it true that the first Client-To-Server command MUST be EXCSAT chained with ACCSEC?

    - by Alon Rew
    When connecting to a server using the DRDA protocol, is it true that the first Client-To-Server command MUST be EXCSAT chained with ACCSEC? I found 2 different answers when I googled it. If you look at The Open Group web site (https://collaboration.opengroup.org/dbiop/) it can be understood that the answer is NO. However, if you look at the IBM website (http://publib.boulder.ibm.com/infocenter/dzichelp/v2r2/index.jsp?topic=%2Fcom.ibm.ims11.doc.apr%2Fims_ddm_excsat.htm) you can understand the answer is YES. So which is it?

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