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Parallel Computing in .Net 4.0

- by kaleidoscope

Technorati Tags: Ram,Parallel Computing in .Net 4.0 Parallel computing is the simultaneous use of multiple compute resources to solve a computational problem: To be run using multiple CPUs A problem is broken into discrete parts that can be solved concurrently Each part is further broken down to a series of instructions Instructions from each part execute simultaneously on different CPUs Parallel Extensions in .NET 4.0 provides a set of libraries and tools to achieve the above mentioned objectives. This supports two paradigms of parallel computing Data Parallelism – This refers to dividing the data across multiple processors for parallel execution.e.g we are processing an array of 1000 elements we can distribute the data between two processors say 500 each. This is supported by the Parallel LINQ (PLINQ) in .NET 4.0 Task Parallelism – This breaks down the program into multiple tasks which can be parallelized and are executed on different processors. This is supported by Task Parallel Library (TPL) in .NET 4.0 A high level view is shown below:

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The October 2013 Oracle Linux Newsletter is Out!

- by Chris Kawalek

The October 2013 edition of the Oracle Linux Newsletter is here! This issue is absolutely packed with information. Some highlights: Information on the "Why Choose Oracle Linux for Your Oracle Database 12c Deployments?" webcast coming up on October 30. Now Available: Unbreakable Enterprise Kernel 3 Oracle Linux Highlights from Oracle OpenWorld 2013 Oracle Linux Now Available on Microsoft Azure Faster Downloads of Oracle Linux Updates Plus, videos, white papers, customer spotlights, information on training, and much more! You can sign up to get the newsletter in your inbox automatically, or you can read this edition online right now. -Chris

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VISUAL STUDIO 2010 GLOBAL LAUNCH

- by Sayre Collado

Hello Guys, The Visual Studio 2010 is here. You can test by downloading the free trial at this link http://www.microsoft.com/visualstudio/en-us/download and view the products features in this link http://www.microsoft.com/visualstudio/en-us/products . You can even watch the live launch at http://www.microsoft.com/visualstudio/en-us/watch-it-live Happy Programming.

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SQL installation scripts for WebCenter Content 11g

- by KJH

As part of the installation of WebCenter Content 11g (UCM or URM), one of the main functions is to run the Repository Creation Utility (RCU) to establish the database schema and tables. This is pretty helpful because it runs all the scripts you need to have without having to manually set anything up in the database. In UCM 10g and earlier, the installation itself would establish the database tables if you wanted it to. Otherwise, the SQL scripts were available to be run independently ahead of time. For DBAs who wanted to understand what was being done to the database for the application, this was helpful for them. But in 11g, that is all masked now in RCU. You don't get to see the scripts at all as part of it's establishing the tables. But if you comb through the directories for RCU, you can track them down. They are in the /rcuHome/rcu/integration/contentserver11/sql/ directories. And to understand the order in which they are run, you can open up the /rcuHome/rcu/integration/contentserver11/contentserver11.xml file and see how they are run there. The order in which they are run are: contentserverrole.sql contentserveruser.sql intradoc.sql workflow.sql formats.sql users.sql default.sql contentprocedures.sql If you are installing WebCenter Records (URM), it will run some additional scripts between the formats.sql and users.sql : MetadataSet.sql UIEnhancements.sql RecordsManagement.sql RecordsManagement_default.sql ClassifiedEnhancements.sql ClassifiedEnhancements_default.sql In addition to the scripts being available within the RCU install directories, they are also available from within the Content Server UI. If you go to Administration -> DataStoreDesign SQL Generation, this page can allow you to download these various SQL scripts. From here, you can select your particular database type and which components to include. Several components make changes dynamically to the database when they are enabled, so these scripts give you a way to inspect what is being run during that startup time. Once selected, click Generate and you now can either view or download the scripts from the Actions menu. DISCLAIMER: Installations are ONLY supported when done with the Repository Creation Utility. These scripts are for reference only and not supported to be run manually.

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BI Publisher at OpenWorld 2012

- by mdonohue

For those going to OpenWorld, hope you can join us for any of the following Sessions, Hands On Labs or just stop by and visit us in the DEMOgrounds: Moscone South S-262 Oracle Business Intelligence Publisher Overview, What’s New, and What’s Planned Monday, 1-Oct 13:45 - 14:45Moscone South - 305Mike Donohue - Oraclewith Ed Farler - CSC Oracle Business Intelligence Publisher: Reporting for Oracle Applications Wednesday, 3-Oct 11:45 - 12:45Palace Hotel - RoseMike Donohue - OracleNote: new room to accommodate everyone who pre-registered Oracle Business Intelligence Publisher Best Practices: Be a Reporting Superstar Wednesday, 3-Oct 15:30 - 16:30Moscone South - 305Nikos Psomas & Klaus Fabian - Oracle Two sessions of the Hands on Lab: Building Reports and Data Models in Oracle Business Intelligence Publisher Tuesday 2-Oct 17:00 - 18:00andThursday 4-Oct 11:15 - 12:15Marriott Marquis - Salon 5/6Nikos Psomas, Klaus Fabian & Kasturi Shekar -- Oracle You can also download the Focus on BI Publisher sheet that lists all Publisher related Sessions, Labs and DEMOground stations. Hope to see you there.

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Evaluating and Investigating Drug Safety Signals with Public Databases Webinar

- by Roxana Babiciu

In this one-hour webinar, BioPharm Systems' Dr. Rodney Lemery, vice president of safety and pharmacovigilance, will review a number of public databases available to use during the evaluation and investigation of identified safety signals. The discussion will focus on the use of free and paid longitudinal healthcare databases available online. After attending this presentation, you will better understand how these data sources can be used in your daily PV work. Read more here

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Jersey 1.8 is released

- by Jakub Podlesak

On the last Friday, we have released the 1.8 version of Jersey, the open source, production quality, reference implementation of JAX-RS. The JAX-RS 1.1 specification is available at the JCP web site and also available in non-normative HTML here. For an overview of JAX-RS features read the Jersey user guide. To get started with Jersey read the getting started section of that guide. To understand more about what Jersey depends on read the dependencies section of that guide. See change log here. This, 1.8, version of Jersey is going to be integrated into GlassFish 3.1.1 and contains bug fixes mainly. The most important fix from this perspective is included in the JAX-RS/EJB integration layer. It is now possible to implement JAX-RS resources as EJB Session beans, which implement local and/or remote interfaces. This functionality was broken in previous releases. Another great addition should come into the client space, where Pavel has already done some preparation in the client API (including some breaking changes there) for the non-blocking asynchronous client feature. The implementation is already part of the experimental Jersey space and should be included as part of the stable Jersey bits in some of the coming releases. For feedback send email to: [email protected] (archived here) or log bugs/features here.

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Random thoughts on Monday

- by user10760339

I know that it has been a long time since my last post, just though that I would update you my latest thoughts of Governance. I just recently completed an executive round table series on EA and Cloud in Singapore, Indonesia and Malaysia. The response was phenomenal. The key point of the session was that Enterprise is the key enabler of innovation - All companies want to drive to be market leaders, EA can lay the foundation for the path to deliver that at innovation. When it comes to innovation, I see two distinct types: (a) Passive innovation is where a company creates innovation thought increments improvement over time. A great example is when airlines went from paper tickets to electronic ticket. Next logical progression is to do the same with boarding passes. There are a lot of examples to choose from, thought the thing to keep in mind, is that passive innovation will only keep you in the lead, it won’t allow you to create new markets or jump from #3 to #1 in one go. For that we need another type of innovation. (b) Disruptive innovation is where you create market where none existed before. Thought very difficult to do and requires significant investment in research, product and software development and not least of all, visionary thinking and timing, if done correctly, can turn the world on it’s ear. A great example is Apple iTunes. Some might say that this is incremental innovation, but only in one aspect, the downloading of music. Other then that, it’s all disruptive innovation. Being able to buy a single song rather then the album fundamentally changed the way we get out music. Behind all of these types of innovation is Enterprise Architecture. EA creates the infrastructure foundation, then delivery systems and the end-user experience to deliver this innovation. At Oracle, we are driving that EA innovation with our private cloud offerings from “bolt-to-glass” as I like to say. For more on what Oracle has to offer in EA and cloud, have a look at Cloud Computing | Oracle and Enterprise Architecture - OracleI am working on new material that I will be posting in a couple of weeks, so check back regularly for new updates or feel free to subscript for updates.

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CVE-2011-4128 Buffer Overflow vulnerability in gnutls

- by Umang_D

CVE DescriptionCVSSv2 Base ScoreComponentProduct and Resolution CVE-2011-4128 Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability 4.3 gnutls Solaris 11 11/11 SRU 12.4 This notification describes vulnerabilities fixed in third-party components that are included in Oracle's product distributions.Information about vulnerabilities affecting Oracle products can be found on Oracle Critical Patch Updates and Security Alerts page.

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The Healthy Tension That Mobility Creates

- by Kathryn Perry

A guest post by Hernan Capdevila, Vice President, Oracle Fusion Apps In my previous post, I talked about the value of the mobile revolution on businesses and workers. Now let me put on a different hat and view the world from the IT department and the IT leader’s viewpoint. The IT leader has different concerns – around privacy, potential liability of information leakage, and intellectual property protection. These concerns and the leader’s goals create a healthy tension with the users. For example, effective device management becomes a must have for the IT leader, especially if you look at the Android ecosystem as an example. There are benefits to the Android strategy, but there are also drawbacks, such as uniformity – in device management, in operating systems, and in the application taxonomy and capabilities. Whereas, if you compare Android to iOS, Apple's operating system, iOS is more unified, more streamlined, and easier to manage. In either case, this is where mobile device management in the cloud makes good sense. I don't think IT departments should be hosting device management and managing that complexity. It should be a cloud service and I predict it's going to be key for our customers. A New Focus for IT Departments So where does that leave the IT departments? I think their futures are in governance, which is a more strategic play than a tactical one. Device management is tactical and it's the “now” topic. But the mobile phenomenon, if you will, is going to drive significant change in terms of how IT plans, hosts, and deploys enterprise applications. For example, opening up enterprise applications for mobile users presents some challenges unless you deploy more complicated network topologies, such as virtual private networks and threat protection technology. If you really want employees to be mobile you need to remove those kinds of barriers. But I don’t think IT departments want to wrestle with exposing their private enterprise data centers and being responsible for hosted business applications – applications in a sense that they’re making vulnerable to the public world. This opens up a significant need and a significant driver for cloud applications. However, it's not just about taking away the complexity – it's also about taking away the responsibility. Why should every business have to carry the responsibility and figure out all the nuts and bolts of how to protect themselves in this public, mobile world? When you use apps in the cloud, either your vendor or your hosting partner should have figured all that out. They need to assure the business that they are adhering to all sorts of security and compliance regulations so users can be connected and have access to information anywhere anytime. More Ideas and Better Service What’s more interesting is the world of possibilities that the connected, cloud-based world enables. I believe that the one-size-fits-all, uber-best practices, lowest-common denominator-like capabilities will go away. IT will now be able to solve very specific business challenges for the different corporate functions it serves. In this new world, IT will play a key role in enabling different organizations within a company to be best in class and delivering greater value to the line of business managers. IT will actually help to differentiate. Net result is a more agile workforce and business because each department is getting work done its own way.

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test

- by ???02

?????????EC????????????????????????????????????????????????????????Oracle Coherence??????????????????????????????????DB???·????????????????????　????EC?????????????????????????Oracle Coherence????????????????????????????????????????????????????????????????????????????????????????????????????????????Oracle Coherence?????????????????????????????????????·?????????????1??????????????????????????????????????????????????????????????????????????????????????????????????????????????　??????Oracle Coherence??????????·????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????Oracle Coherence????????“???”????????????????????????????????????????????????????????????????????????????????????????????????Oracle Coherence?????????????????????????????????????Oracle Coherence???????????????????????????　?????????????????A????1????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????1????????????????????????????????????????????????????????　?????????????????????????·???????·???????Oracle Coherence???????????????????????????????????????????????????????????????????????????????????????1?????????Oracle Coherence????????????10??1??????????????????????????????????????????????????????????????????????????????　B?????????????·????????????????????????????????????????????????????????????????????????????????·????????????????????????????????????????????????????????????????????????????????????????????????????????　????????????????????????????????????????????????????????????????????IA??????????????????????????????????????????Oracle Coherence?????????????????????????????????????　???????????????????Oracle Coherence????????????????????????????????????????????????????????????2??????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????　C???????·????????????Oracle Coherence???????????????????????????????????????????????????????????????????????????????·???????????????????????????10??1??????????????????????????????????????????????????????????????????????????????????????·???????????????????????????　????????D?????????????????????????????EC????????????????????????????????????????????????????????????????????????????????????EC?????????????????????????????????Oracle Coherence?????????Java????????·??????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????

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Real Time BI in the Real World

- by tobin.gilman(at)oracle.com

Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman","serif";} Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman","serif"; mso-fareast-font-family:"Times New Roman";} One of my favorite BI offerings from Oracle is a solution called Oracle Real Time Decisions. Whenever I mention this product in customer meetings, eyes light up. There are some fascinating examples of customers using it to up-sell, cross-sell, increase customer retention, and reduce risk in real time, with off the charts return on investment. I plan to share some of those stories in a future blog. In this post however, I want to share some far more common real time analytics use case scenarios that are being addressed with widely deployed Oracle BI and data integration technologies Not all real time BI applications require continuous learning, predictive modeling, and data mining. Many simply require the ability to integrate, aggregate, and access information that is current (typically within in few minutes or a few seconds). The use cases are infinite. A few I've seen: · Purchasing agents need to match demand against available inventory · Manufacturing planners need to monitor current parts and material against scheduled build plans · Airline agents need to match ticket demand against flight schedules, · Human resources managers need to track the status of global hiring requisitions against current headcount authorizations...you get the idea. One way of doing this is to run reports or federated queries directly against transactional systems. That approach can be viable if you only need to access simple data sets on rare occasions. High volume and complex queries can quickly bog down performance of mission critical transactional systems. There is an architecturally simple way of solving the problem, and it's being applied by real companies around the world to solve real needs in real time. Cbeyond is an Atlanta, GA based provider of voice, data and mobile business applications delivers. They deliver real time information to its call center agents as they are interacting with their customers. The data they need resides in production CRM and other transactional systems, but instead or reporting directly off the those systems, data is first moved to an operational data store (ODS). Rather than running data intensive, time consuming, and performance degrading batch ETL routines to populate the ODS, Cbeyond uses Oracle Golden Gate software to incrementally capture and move only the changed records from log files of the transactional systems every few minutes. There is no impact on transactional system performance, and the information needed by call center representatives is up to date. Oracle Business Intelligence software presents the information to services reps in a rich, visual, and highly interactive format. Avea is similar to Cbeyond. They are a telecommunications company who integrates billing and customer information in an ODS that is accessed by their call center agents in real time using Oracle Golden Gate and Oracle Business Intelligence. They've taken it a step further by using the ODS to feed a data warehouse. The operational data store provides the current information needed by call center agents during "in flight" customer interactions. The data warehouse is used for more sophisticated analysis of historical data. For maximum performance, both the ODS and data warehouse run on the Oracle Exadata Database Machine. These are practical illustrations of companies addressing real time reporting and analysis needs using established business intelligence/data warehousing methodologies and tools common to many IT departments. If real time BI could benefit your organization, you may be already be closer than you thought to having the pieces in place to solving the problem. Give us a shout if you are interested in learning more or if you have an interesting use or approach to real-time BI.

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Solita Oy Achieves Oracle PartnerNetwork Specialization

- by michaela.seika(at)oracle.com

Helsinki, February 2, 2011 - Solita Oy, a member of the Oracle® PartnerNetwork (OPN), is the first Finnish enterprise to achieve OPN Specialized status for customer-specific systems integration and software solutions.To achieve a Specialized status, Oracle partners are required to meet a stringent set of requirements that are based on the needs and priorities of the customer and partner community. By achieving a Specialized distinction, Solita Oy has been recognized by Oracle for its expertise in customer-specific systems integration and software solutions, achieved through competency development and demonstrated by the company's business results and proven success in implementing customer projects. "Solita and Oracle have cooperated for a long time, and we have been an Oracle partner for many years. We believe that the renewed partner program and the new partnership level that we have achieved will open up new opportunities for a closer collaboration with Oracle. Our increased focus on systems integration solutions and the stepping up of our specialized knowledge of SOA will enable us to provide even better solutions for our customers," said Jari Niska, Chief Executive Officer, Solita Oy. "Solita has shown trust and belief in Oracle's technology and in the business opportunities arising with it. They have contributed to building our cooperation in a consistent and systematic way. Achieving a Specialized status in our partner program is a natural further step in our close and committed cooperation. It strengthens our trust in our ability to be able to increase both turnover and profitability together," said Juha Kaskirinne, Alliances and Channel Leader, Oracle Finland Oy. About Oracle PartnerNetwork Oracle PartnerNetwork (OPN) Specialized is the latest version of Oracle's partner program that provides partners with tools to better develop, sell and implement Oracle solutions. OPN Specialized offers resources to train and support specialized knowledge of Oracle products and solutions and has evolved to recognize Oracle's growing product portfolio, partner base and business opportunity. Key to the latest enhancements to OPN is the ability for partners to differentiate through Specializations. Specializations are achieved through competency development, business results, expertise and proven success. To find out more visit http://www.oracle.com/partners or connect with the Oracle Partner community at OPN on Twitter, OPN on Facebook, OPN on LinkedIn, and OPN on YouTube. About Solita Oy Solita Oy is a Finnish company dedicated to developing demanding information system solutions and IT professional services. Solita's customers include prominent Finnish companies and public organizations. Solita's turnover in 2010 was about 17 million euros. The company was founded in 1996 and has over 170 employees. Further information: www.solita.fiFurther information Jari Niska, CEO, Solita Oy, tel. +358 40 524 6400, [email protected] Kaskirinne, A&C Leader Finland, Oracle Finland Oy, tel. +358 40 506 3592, [email protected]

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Glume cu chelneri

- by interesante

La un mic restaurant, in luna decembrie:- Chelner, ce ai rece in acest moment?- Picioarele, domnule.Distreaza-te si cu alte lucruri amuzante de pe jurnalul meu haios.La un restaurant de lux, vine controlul de la Sanepid.Fac ei controlul si constata ca totul era o.k.Multumiti,din partea patronului de local,primesc si un pranz.Vine chelnerul,ii intreaba ce vin doresc sa serveasca,le aduce vinul,scoate dopul de pluta,le toarna in pahare si, ca la un local care se respecta,acesta scoase o lingurita de la pieptul sacoului si curata cu grija bucatelele de pluta din paharele mesenilor. Dupa ce inspectorii servira masa, il chemara pe chelner sa-i multumeasca si-l intrebara: - Nu va suparati! De ce purtati snur la slit? - Igiena inainte de toate! Cand ne ducem la buda, ca sa nu mai punem mana, tragem de snur si gata! - Aha! Si cum o bagati la loc? - Cu lingurita!

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Managing Files/Folder in Content Repositories or File Systems with Oracle ADF and WebCenter

- by Shay Shmeltzer

One more entry in a set of entries (1,2,3) about the capabilities that WebCenter adds to ADF applications. WebCenter is basically the new Portal framework in the Oracle stack - and one key thing that portals do is work with content, allowing you to compose and publish content from files as well as save and store content. In this demo you'll see how using a set of taskflows provided by WebCenter you can add a file management, creation and viewing capabilities to a regular ADF application. To try this out you don't need any fancy content management system - we'll just use your file system for now. All you need is the WebCenter extension installed in JDeveloper, and then you can follow the demo on your own JDeveloper instance. You'll define a connection to your content repository you'll be able to add a bunch of pre-built WebCenter taskflows into your page. And suddenly you can upload/download/create and view document directly from your applicaiton. Check it out:

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Oracle Retail Consulting and the Implementation Process, with Maria Porretta

- by user801960

Maria Porretta, Engagement Director, discusses Oracle Retail Consulting and its involvement in the implementation process and how it supports customers to maximize their ROI in Oracle Retail solutions. Maria explains the wide range of factors customers need to consider when preparing to implement Oracle Retail, from the solutions being utilized to the current IT infrastructures and available resources of the end user. Oracle Retail Consulting ensures a smooth and efficient process by working with customers from design right through to final implementation, and continues to work with customers to ensure they get value from their software investments and further extend investment in Oracle Retail solutions. Further information is available on our website regarding Oracle Retail Consulting.

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Managing .NET Deployment Configuration With Rake

- by Liam McLennan

Rake is a ruby internal DSL for build scripting. With (or without) the help of albacore rake makes an excellent build scripting tool for .NET projects. The albacore documentation does a good job of explaining how to build solutions with rake but there is nothing to assist with another common build task – updating configuration files. The following ruby script provides some helper methods for performing common configuration changes that are required as part of a build process. class ConfigTasks def self.set_app_setting(config_file, key, value) ovsd_element = config_file.root.elements['appSettings'].get_elements("add[@key='#{key}']")[0] ovsd_element.attributes['value'] = value end def self.set_connection_string(config_file, name, connection_string) conn_string_element = config_file.root.elements['connectionStrings'].get_elements("add[@name='#{name}']")[0] conn_string_element.attributes['connectionString'] = connection_string end def self.set_debug_compilation(config_file, debug_compilation) compilation_element = config_file.root.elements['system.web'].get_elements("compilation")[0] compilation_element.attributes['debug'] = false end private def self.write_xml_to_file(xml_document, file) File.open(file, 'w') do |config_file| formatter = REXML::Formatters::Default.new formatter.write(xml_document, config_file) end end end To use, require the file and call the class methods, passing the configuration file name and any other parameters. require 'config_tasks' ConfigTasks.set_app_setting 'web.config', 'enableCache', 'false'

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Discount Multilingual Day in the Life of User Experience

- by ultan o'broin

Super article by the WikiMedia Foundation engineering folks about Designing for the Multilingual Web using the Wikipedia Universal Language Selector user interface as an example. Great ideas about tools that are available, as well as covering the basics of wireframing (mockups), prototyping, and user testing. Lots of inspiration there for developers and builders of apps who want to ensure their user experience (UX) really delivers for a global audience. Check out the use of the Firefox-based Pencil, how to translate your mockups, and how to perform remote user testing using Google+ Hangouts. Paul Giner demonstrates how to translate mockups. A little clunky and homespun in parts (I would prefer if tools such as Pencil or Balsamiq MockUps, and so on, could roundtrip directly from SVG to XLIFF for example, and Pencil doesn't work yet with the latest versions for Firefox) and I am not sure how it can really scales to enterprise-level use. However, the UX methodology is basically sound, and reinforces the importance of designing and testing in more that one language. The most powerful message for me is that you do not need special resources, training or expensive tools to deliver great-looking usable apps if you're a developer. Definitely worth considering if you're building apps out there in the community.

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Computer Networks UNISA - Chap 10 – In Depth TCP/IP Networking

- by MarkPearl

After reading this section you should be able to Understand methods of network design unique to TCP/IP networks, including subnetting, CIDR, and address translation Explain the differences between public and private TCP/IP networks Describe protocols used between mail clients and mail servers, including SMTP, POP3, and IMAP4 Employ multiple TCP/IP utilities for network discovery and troubleshooting Designing TCP/IP-Based Networks The following sections explain how network and host information in an IPv4 address can be manipulated to subdivide networks into smaller segments. Subnetting Subnetting separates a network into multiple logically defined segments, or subnets. Networks are commonly subnetted according to geographic locations, departmental boundaries, or technology types. A network administrator might separate traffic to accomplish the following… Enhance security Improve performance Simplify troubleshooting The challenges of Classful Addressing in IPv4 (No subnetting) The simplest type of IPv4 is known as classful addressing (which was the Class A, Class B & Class C network addresses). Classful addressing has the following limitations. Restriction in the number of usable IPv4 addresses (class C would be limited to 254 addresses) Difficult to separate traffic from various parts of a network Because of the above reasons, subnetting was introduced. IPv4 Subnet Masks Subnetting depends on the use of subnet masks to identify how a network is subdivided. A subnet mask indicates where network information is located in an IPv4 address. The 1 in a subnet mask indicates that corresponding bits in the IPv4 address contain network information (likewise 0 indicates the opposite) Each network class is associated with a default subnet mask… Class A = 255.0.0.0 Class B = 255.255.0.0 Class C = 255.255.255.0 An example of calculating the network ID for a particular device with a subnet mask is shown below.. IP Address = 199.34.89.127 Subnet Mask = 255.255.255.0 Resultant Network ID = 199.34.89.0 IPv4 Subnetting Techniques Subnetting breaks the rules of classful IPv4 addressing. Read page 490 for a detailed explanation Calculating IPv4 Subnets Read page 491 – 494 for an explanation Important… Subnetting only applies to the devices internal to your network. Everything external looks at the class of the IP address instead of the subnet network ID. This way, traffic directed to your network externally still knows where to go, and once it has entered your internal network it can then be prioritized and segmented. CIDR (classless Interdomain Routing) CIDR is also known as classless routing or supernetting. In CIDR conventional network class distinctions do not exist, a subnet boundary can move to the left, therefore generating more usable IP addresses on your network. A subnet created by moving the subnet boundary to the left is known as a supernet. With CIDR also came new shorthand for denoting the position of subnet boundaries known as CIDR notation or slash notation. CIDR notation takes the form of the network ID followed by a forward slash (/) followed by the number of bits that are used for the extended network prefix. To take advantage of classless routing, your networks routers must be able to interpret IP addresses that don;t adhere to conventional network class parameters. Routers that rely on older routing protocols (i.e. RIP) are not capable of interpreting classless IP addresses. Internet Gateways Gateways are a combination of software and hardware that enable two different network segments to exchange data. A gateway facilitates communication between different networks or subnets. Because on device cannot send data directly to a device on another subnet, a gateway must intercede and hand off the information. Every device on a TCP/IP based network has a default gateway (a gateway that first interprets its outbound requests to other subnets, and then interprets its inbound requests from other subnets). The internet contains a vast number of routers and gateways. If each gateway had to track addressing information for every other gateway on the Internet, it would be overtaxed. Instead, each handles only a relatively small amount of addressing information, which it uses to forward data to another gateway that knows more about the data’s destination. The gateways that make up the internet backbone are called core gateways. Address Translation An organizations default gateway can also be used to “hide” the organizations internal IP addresses and keep them from being recognized on a public network. A public network is one that any user may access with little or no restrictions. On private networks, hiding IP addresses allows network managers more flexibility in assigning addresses. Clients behind a gateway may use any IP addressing scheme, regardless of whether it is recognized as legitimate by the Internet authorities but as soon as those devices need to go on the internet, they must have legitimate IP addresses to exchange data. When a clients transmission reaches the default gateway, the gateway opens the IP datagram and replaces the client’s private IP address with an Internet recognized IP address. This process is known as NAT (Network Address Translation). TCP/IP Mail Services All Internet mail services rely on the same principles of mail delivery, storage, and pickup, though they may use different types of software to accomplish these functions. Email servers and clients communicate through special TCP/IP application layer protocols. These protocols, all of which operate on a variety of operating systems are discussed below… SMTP (Simple Mail transfer Protocol) The protocol responsible for moving messages from one mail server to another over TCP/IP based networks. SMTP belongs to the application layer of the ODI model and relies on TCP as its transport protocol. Operates from port 25 on the SMTP server Simple sub-protocol, incapable of doing anything more than transporting mail or holding it in a queue MIME (Multipurpose Internet Mail Extensions) The standard message format specified by SMTP allows for lines that contain no more than 1000 ascii characters meaning if you relied solely on SMTP you would have very short messages and nothing like pictures included in an email. MIME us a standard for encoding and interpreting binary files, images, video, and non-ascii character sets within an email message. MIME identifies each element of a mail message according to content type. MIME does not replace SMTP but works in conjunction with it. Most modern email clients and servers support MIME POP (Post Office Protocol) POP is an application layer protocol used to retrieve messages from a mail server POP3 relies on TCP and operates over port 110 With POP3 mail is delivered and stored on a mail server until it is downloaded by a user Disadvantage of POP3 is that it typically does not allow users to save their messages on the server because of this IMAP is sometimes used IMAP (Internet Message Access Protocol) IMAP is a retrieval protocol that was developed as a more sophisticated alternative to POP3 The single biggest advantage IMAP4 has over POP3 is that users can store messages on the mail server, rather than having to continually download them Users can retrieve all or only a portion of any mail message Users can review their messages and delete them while the messages remain on the server Users can create sophisticated methods of organizing messages on the server Users can share a mailbox in a central location Disadvantages of IMAP are typically related to the fact that it requires more storage space on the server. Additional TCP/IP Utilities Nearly all TCP/IP utilities can be accessed from the command prompt on any type of server or client running TCP/IP. The syntaxt may differ depending on the OS of the client. Below is a list of additional TCP/IP utilities – research their use on your own! Ipconfig (Windows) & Ifconfig (Linux) Netstat Nbtstat Hostname, Host & Nslookup Dig (Linux) Whois (Linux) Traceroute (Tracert) Mtr (my traceroute) Route

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Oracle GoldenGate Active-Active Part 1

- by Nick_W

My name is Nick Wagner, and I'm a recent addition to the Oracle Maximum Availability Architecture (MAA) product management team. I've spent the last 15+ years working on database replication products, and I've spent the last 10 years working on the Oracle GoldenGate product. So most of my posting will probably be focused on OGG. One question that comes up all the time is around active-active replication with Oracle GoldenGate. How do I know if my application is a good fit for active-active replication with GoldenGate? To answer that, it really comes down to how you plan on handling conflict resolution. I will delve into topology and deployment in a later blog, but here is a simple architecture: The two most common resolution routines are host based resolution and timestamp based resolution. Host based resolution is used less often, but works with the fewest application changes. Think of it like this: any transactions from SystemA always take precedence over any transactions from SystemB. If there is a conflict on SystemB, then the record from SystemA will overwrite it. If there is a conflict on SystemA, then it will be ignored. It is quite a bit less restrictive, and in most cases, as long as all the tables have primary keys, host based resolution will work just fine. Timestamp based resolution, on the other hand, is a little trickier. In this case, you can decide which record is overwritten based on timestamps. For example, does the older record get overwritten with the newer record? Or vice-versa? This method not only requires primary keys on every table, but it also requires every table to have a timestamp/date column that is updated each time a record is inserted or updated on the table. Most homegrown applications can always be customized to include these requirements, but it's a little more difficult with 3rd party applications, and might even be impossible for large ERP type applications. If your database has these features - whether it’s primary keys for host based resolution, or primary keys and timestamp columns for timestamp based resolution - then your application could be a great candidate for active-active replication. But table structure is not the only requirement. The other consideration applies when there is a conflict; i.e., do I need to perform any notification or track down the user that had their data overwritten? In most cases, I don't think it's necessary, but if it is required, OGG can always create an exceptions table that contains all of the overwritten transactions so that people can be notified. It's a bit of extra work to implement this type of option, but if the business requires it, then it can be done. Unless someone is constantly monitoring this exception table or has an automated process in dealing with exceptions, there will be a delay in getting a response back to the end user. Ideally, when setting up active-active resolution we can include some simple procedural steps or configuration options that can reduce, or in some cases eliminate the potential for conflicts. This makes the whole implementation that much easier and foolproof. And I'll cover these in my next blog.

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A strong component keeps everything together

- by Justin Paul-Oracle

Most of the times you implement a WebCenter Content based system, you require some sort of customization. Sometimes these customizations need a Java class or two, or libraries (for example, the JavaMail API), or Database Objects (like new tables, views, indexes, etc). I have seen that libraries and Database Objects are usually put in place using manual steps. This means that the library jar files are copied to one of the common classes directory (set in the Content CLASSPATH variable) and/or the database scripts are executed manually. I have also seen people place the custom Java classes in the common classes directory. While this may seem like an easy solution, think about a scenario where you need to disable or uninstall the component or if you have to upgrade or migrate the system. You have to keep these manual steps documented and execute them every time you encounter the above scenarios. It is very common that some of these manual steps are missed when you have multiple teams and people working on the system. Here are a few points to ponder upon: Place all your custom Java classes within your component. Create a new directory, say ${COMPONENT_DIR}/classes, and place your code there. You can choose to bundle all your classes into a jar or you can place the entire class directory structure. Add a path entry to the Build Settings so that it is bundled with the component when you build it. You also need to update the Custom Class Path and the Custom Class Path Load Order under the Advanced Build Settings. This will ensure that the system CLASSPATH is updated to add this new directory. Create a new component for any new library that you want to add. Add the appropriate path entries to the Build Settings so that it is bundled with the component when you build it. You also need to update the Custom Class Path, Custom Class Path Load Order and/or the Custom Library Path under the Advanced Build Settings. Enter a comma separated list of features that this component will provide. When you create other components that will use the features exposed by this component, make sure that you specify a dependency to this library component by specifying the comma separated list of features in the Advanced Build Settings. The component wizard allows you to create custom install/uninstall Java code. The wizard will create a install filter class when you check the “Has Install” checkbox on the “Install/Uninstall Settings” tab. Consider using this filter class to create database objects when you install the component and drop the objects when you uninstall the component. If you do a lot of custom component development, consider creating a install/uninstall Java class, which can execute queries defined within the component. To sum up, whenever you write a new custom component, make sure that you bundle everything within the component.

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C# Tip - Rendering HTML in a Gridview cell

- by BobPalmer

Just a quick tip for working with the gridview in ASP.Net. If your data column contains HTML text, you've probably seen something like this in your gridview after pulling the data: <font color="red">First Item</font><br/><font color="green">Second Item</font><br/><font color="blue">Third Item</font> To have the relevant column render in HTML, just go to your gridview property pages, find the column you need rendered in HTML, and click 'convert this Field into a TemplateField'. The result is that as a template field, HTML within your bound data value will be rendered properly. So our example above would transform into: First Item Second Item Third Item I primarily use this technique for enabling HTML content in comment fields, and to insert line breaks when building the data for these fields. Hope this helps out! -Bob

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Exadata X3, 11.2.3.2 and Oracle Platinum Services

- by Rene Kundersma

Oracle recently announced an Exadata Hardware Update. The overall architecture will remain the same, however some interesting hardware refreshes are done especially for the storage server (X3-2L). Each cell will now have 1600GB of flash, this means an X3-2 full rack will have 20.3 TB of total flash ! For all the details I would like to refer to the Oracle Exadata product page: www.oracle.com/exadata Together with the announcement of the X3 generation. A new Exadata release, 11.2.3.2 is made available. New Exadata systems will be shipped with this release and existing installations can be updated to that release. As always there is a storage cell patch and a patch for the compute node, which again needs to be applied using YUM. Instructions and requirements for patching existing Exadata compute nodes to 11.2.3.2 using YUM can be found in the patch README. Depending on the release you have installed on your compute nodes the README will direct you to a particular section in MOS note 1473002.1. MOS 1473002.1 should only be followed with the instructions from the 11.2.3.2 patch README. Like with 11.2.3.1.0 and 11.2.3.1.1 instructions are added to prepare your systems to use YUM for the first time in case you are still on release 11.2.2.4.2 and earlier. You will also find these One Time Setup instructions in MOS note 1473002.1 By default compute nodes that will be updated to 11.2.3.2.0 will have the UEK kernel. Before 11.2.3.2.0 the 'compatible kernel' was used for the compute nodes. For 11.2.3.2.0 customer will have the choice to replace the UEK kernel with the Exadata standard 'compatible kernel' which is also in the ULN 11.2.3.2 channel. Recommended is to use the kernel that is installed by default. One of the other great new things 11.2.3.2 brings is Writeback Flashcache (wbfc). By default wbfc is disabled after the upgrade to 11.2.3.2. Enable wbfc after patching on the storage servers of your test environment and see the improvements this brings for your applications. Writeback FlashCache can be enabled by dropping the existing FlashCache, stopping the cellsrv process and changing the FlashCacheMode attribute of the cell. Of course stopping cellsrv can only be done in a controlled manner. Steps: drop flashcache alter cell shutdown services cellsrv again, cellsrv can only be stopped in a controlled manner alter cell flashCacheMode = WriteBack alter cell startup services cellsrv create flashcache all Going back to WriteThrough FlashCache is also possible, but only after flushing the FlashCache: alter cell flashcache all flush Last item I like to highlight in particular is already from a while ago, but a great thing to emphasis: Oracle Platinum Services. On top of the remote fault monitoring with faster response times Oracle has included update and patch deployment services.These services are delivered by Oracle Advanced Customer Support at no additional costs for qualified Oracle Premier Support customers. References: 11.2.3.2.0 README Exadata YUM Repository Population, One-Time Setup Configuration and YUM upgrades 1473002.1 Oracle Platinum Services

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Cookbook: SES and UCM setup

- by George Maggessy

The purpose of this post is to guide you setting up the integration between UCM and SES. On my next post I’ll show different approaches to integrate WebCenter Portal, UCM and SES based on some common scenarios. Let’s get started. WebCenter Content Configuration WebCenter Content has a component that adds functionality to the content server to allow it to be searched via the Oracle SES. To enable the component installation, go to Administration -> Admin Server and select SESCrawlerExport. Click the update button and restart UCM_server1 managed server. Once the managed server is back, we’ll configure the component. In the menu, under Administration you should see SESCrawlerExport. Click on the link. You’ll see the window below. Click on Configure SESCrawlerExport. Configure the values below: Hostname: SES hostname. Feed Location: Directory where data feeds will be saved. Metadata List: List of metadata that will be searchable by SES. After updating the values click on the Update button. Come back to the SESCrawlerExport Administration UI and click on Take Snapshot button. It will create the data feeds in the specified Feed Location. To check if the correct configuration was done, please access the following URL http://<ucm_server>:<port>/cs/idcplg?IdcService=SES_CRAWLER_DOWLOAD_CONFIG&source=default. It should download config file in the format below: <?xml version="1.0" encoding="UTF-8"?> <rsscrawler xmlns="http://xmlns.oracle.com/search/rsscrawlerconfig"> <feedLocation><![CDATA[http://adc6160699.us.oracle.com:16200/cs/idcplg?IdcService=SES_CRAWLER_DOWNLOAD_CONTROL&source=default]]></feedLocation> <errorFileLocation><![CDATA[http://adc6160699.us.oracle.com:16200/cs/idcplg?IdcService=SES_CRAWLER_STATUS&IsJava=1&source=default&StatusFeed=]]></errorFileLocation> <feedType>controlFeed</feedType> <sourceName>default</sourceName> <securityType>attributeBased</securityType> <securityAttribute name="Account" grant="true"/> <securityAttribute name="DocSecurityGroup" grant="true"/> <securityAttribute name="Collab" grant="true"/> </rsscrawler> Make sure Account and DocSecurityGroup values are true. SES Configuration Let’s start by configuring the Identity Plug-ins in SES. Go to Global Settings -> System -> Identity Management Setup. Select Oracle Content Server and click the Activate button. We’ll populate the following values: HTTP endpoint for authentication: URL to WebCenter Content. Notice that /cs/idcplg was added at the end of the URL. Admin User: UCM Admin user. This user must have access to all CPOE content. Password: Password to Admin user. Authentication Type: NATIVE. Go back to the Home tab and click on Sources on the top left. Select Oracle Content Server on the right and click the Create button. Configuration URL: URL that point to the configuration file. Example: http://<ucm_hostname>:<port>/cs/idcplg?IdcService=SES_CRAWLER_DOWNLOAD_CONFIG&source=default. User ID: UCM Admin user. Password: Password to Admin user. Click on the Authorization tab and add the appropriate values to the fields below. Make sure you see the ACCOUNT and DOCSECURITYGROUP security attributes at the end of the page. HTTP endpoint for authorization: http://<ucm_hostname>:<port>/cs/idcplg. Display URL prefix: http://<ucm_hostname>:<port>/cs. Administrator user: UCM Admin user. Administrator password. On the Document Types tab, add the documents that should be indexed by SES. As our last step, we’ll configure the Federation Trusted Entities under Global Settings. Entity Name: The user must be present in both the identity management server configured for your WebCenter application and the identity management server configured for Oracle SES. For instance, I used weblogic in my sample. Password: Entity user password.\ Now you are ready to test the integration on the SES UI: http://<ses hostname>:<port>/search/query/.

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BizTalk 2009 - Service Instances: Last 100

- by StuartBrierley

Having previously talked about the lack of the traditional HAT in BizTalk 2009, the question then becomes how do you replicate some of the functionality that was previsouly relied on? I have already covered the Last 100 Messages Received, the Last 100 Messages Sent, and the Last 50 Suspended Messages queries so what about service instances? The BizTalk 2009 Group Hub allows you to search for suspended service instances and also running service instances, but not the two together. In BizTalk 2004 we had a query in HAT to return the last 100 service instances. Lets create a direct replacement in the BizTalk 2009 Hatless environment. Basically we are creating a query to search for the last one hundred tracked service instances:

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