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• Microsoft Sql Server 2008 R2 System Databases

  For a majority of software developers little time is spent understanding the inner workings of the database management systems (DBMS) they use to store data for their applications.  I personally place myself in this grouping. In my case, I have used various versions of Microsoft’s SQL Server (2000, 2005, and 2008 R2) and just recently learned how valuable they really are when I was preparing to deliver a lecture on "SQL Server 2008 R2, System Databases". Microsoft Sql Server 2008 R2 System DatabasesSo what are system databases in MS SQL Server, and why should I know them? Microsoft uses system databases to support the SQL Server DBMS, much like a developer uses config files or database tables to support an application. These system databases individually provide specific functionality that allows MS SQL Server to function. Name Database File Log File Master master.mdf mastlog.ldf Resource mssqlsystemresource.mdf mssqlsystemresource.ldf Model model.mdf modellog.ldf MSDB msdbdata.mdf msdblog.ldf Distribution distmdl.mdf distmdl.ldf TempDB tempdb.mdf templog.ldf Master DatabaseIf you have used MS SQL Server then you should recognize the Master database especially if you used the SQL Server Management Studio (SSMS) to connect to a user created database. MS SQL Server requires the Master database in order for DBMS to start due to the information that it stores. Examples of data stored in the Master database User Logins Linked Servers Configuration information Information on User Databases Resource DatabaseHonestly, until recently I never knew this database even existed until I started to research SQL Server system databases. The reason for this is due largely to the fact that the resource database is hidden to users. In fact, the database files are stored within the Binn folder instead of the standard MS SQL Server database folder path. This database contains all system objects that can be accessed by all other databases.  In short, this database contains all system views and store procedures that appear in all other user databases regarding system information. One of the many benefits to storing system views and store procedures in a single hidden database is the fact it improves upgrading a SQL Server database; not to mention that maintenance is decreased since only one code base has to be mainlined for all of the system views and procedures. Model DatabaseThe Model database as the name implies is the model for all new databases created by users. This allows for predefining default database objects for all new databases within a MS SQL Server instance. For example, if every database created by a user needs to have an “Audit” table when it is  created then defining the “Audit” table in the model will guarantees that the table will be located in every new database create after the model is altered. MSDB DatabaseThe MSDBdatabase is used by SQL Server Agent, SQL Server Database Mail, SQL Server Service Broker, along with SQL Server. The SQL Server Agent uses this database to store job configurations and SQL job schedules along with SQL Alerts, and Operators. In addition, this database also stores all SQL job parameters along with each job’s execution history.  Finally, this database is also used to store database backup and maintenance plans as well as details pertaining to SQL Log shipping if it is being used. Distribution DatabaseThe Distribution database is only used during replication and stores meta data and history information pertaining to the act of replication data. Furthermore, when transactional replication is used this database also stores information regarding each transaction. It is important to note that replication is not turned on by default in MS SQL Server and that the distribution database is hidden from SSMS. Tempdb DatabaseThe Tempdb as the name implies is used to store temporary data and data objects. Examples of this include temp tables and temp store procedures. It is important to note that when using this database all data and data objects are cleared from this database when SQL Server restarts. This database is also used by SQL Server when it is performing some internal operations. Typically, SQL Server uses this database for the purpose of large sort and index operations. Finally, this database is used to store row versions if row versioning or snapsot isolation transactions are being used by SQL Server. Additionally, I would love to hear from others about their experiences using system databases, tables, and objects in a real world environments.

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• Quelles sont les meilleures solutions de virtualisation pour faire son Cloud privé ? Smile fait un panorama des outils open-sources

  Quelles sont les meilleures solutions de virtualisation pour faire son Cloud privé ? Smile fait un panorama des outils open-sources disponibles La virtualisation s'attaque à la problématique du poste de travail, vise à régler les problèmes de déploiement et de maintenance, et permet d'améliorer le partage des ressources physiques et d'éviter l'achat superflu de serveurs. C'est dire si son champ d'application devient de plus en plus vaste pour les professionnels. Cette montée en puissance s'est traduite par une démocratisation du Cloud et, notamment pour les entreprises, du Cloud privé. Avec une conséquence du côté des outils, les solutions de virtualisation ont connu ces derniers ...

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• How to quantify product work in Resume?

  - by mob1lejunkie

  One of things I do in my Resume is try to quantify the impact my work has had in the particular company I was with at the time. The reason is it shows the value my work had added to the business. Is this what you guys do as well or am I the only one? In my previous job this was easy as I worked on short/medium internal applications and it was fairly easy to measure end result. For example, external consulting company quoted $50,000 for an application Business Services department wanted I completed it in 3 days so I say I saved the company $48,000. I have been in my current job for 3 years but all of it has been on 1 single well established product. About 30% work is maintenance and 70% work is on new modules. I have worked on various modules like API (WCF), Security (2 factor authentication), etc. How should I quantify work on modules? Many thanks.

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• Is there such a thing as having too many private functions/methods?

  - by shovonr

  I understand the importance of well documented code. But I also understand the importance of self-documenting code. The easier it is to visually read a particular function, the faster we can move on during software maintenance. With that said, I like to separate big functions into other smaller ones. But I do so to a point where a class can have upwards of five of them just to serve one public method. Now multiply five private methods by five public ones, and you get around twenty-five hidden methods that are probably going to be called only once by those public ones. Sure, it's now easier to read those public methods, but I can't help but think that having too many functions is bad practice.

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• My website links now include DirectX categories

  - by Michael B. McLaughlin

  I’ve done a bit of overdue updates to my website. The links page - http://www.bobtacoindustries.com/Developers/Links  - now includes DirectX links. I’ve also updated all of the links that were broken in the recent changes to the App Hub site. If you have any good links you think I’m missing, let me know. I haven’t had a chance to do any dead link checking & pruning yet so there might be some links that go to the wrong place or go nowhere at all. That’s the problem with link repositories; maintenance of them is quite a bit of work. But hopefully I’ll find some time to do that soon.

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• JSR Updates and Inactive JSR ballots

  - by heathervc

  The following are JSRs have posted updates in the last week: JSR 331, Constraint Programming API, has posted a Maintenance Draft Review; this review closes 29 September. JSR 352, Batch Applications for the Java Platform, has posted an Early Draft Review; this review closes 29 September. JSR 353, Java API for JSON Processing, has posted an Early Draft Review; this review closes 7 October. Inactive JSRs: The following JSR proposals have been Inactive for at least two years and are currently on the EC ballot to be declared Dormant, following a period where the community was given an opportunity to express interest in their continued development: JSR 50, Distributed Real-Time Specification JSR 282, Real-Time Specification for Java (RTSJ) 1.1 JSR 307, Network Mobility and Mobile Data API JSR 327, Dynamic Contents Delivery Service API for Java ME JSR 328, Change Management API

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• Need a Holistic view of your Concurrent Processing? Choose CP Analyzer

  - by user793044

  The Concurrent Processing Analyzer is a Self-Service Health-Check script which reviews the overall Concurrent Processing Footprint, analyzes the current configurations and settings for the environment providing feedback and recommendations on Best Practices. This is a non-invasive script which provides recommended actions to be performed on the instance it was run on.  For production instances, always apply any changes to a recent clone to ensure an expected outcome. Benefits include: E-Business Applications Concurrent Processing Analyzer Overview E-Business Applications Concurrent Request Analysis E-Business Applications Concurrent Manager Analysis Identifies Concurrent System Setup and configurations Identifies and recommends Concurrent Best Practices Easy to add Tool for regular Concurrent Maintenance Execute Analysis anytime to compare trending from past outputs Go to Doc ID 1411723.1 for more details and script download. Feedback welcome!

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• Is OpenStack suitable as a fault tolerant DB host?

  - by Jit B

  I am trying to design a fault tolerant DB cluster (schema does not matter) that would not require much maintenance. After looking at almost everything from MySQL to MongoDB to HBase I still find that no DB is easily scalable - Cassandra comes close but it has its own set of problems. So I was thinking what if I run something like MySQL or OrientDB on top of a large openstack VM. The VM would be fault tolerant by itself so I dont need to do it st DB level. Is it viable? Has it been done before? If not then what are the possible problems with this approach?

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• Can decoupling hurt maintainability in certain situations?

  - by Ceiling Gecko

  Can the fact that the business logic is mapped to interfaces instead of implementations actually hinder the maintenance of the application in certain situations? A naive example with the Java's Hibernate framework would be, that for example (provided I don't have the whole code-base in my head, the project structure is a mess and classes are named with arbitrary names) if I wish to see what's going on in a certain DAO, to see if it actually is doing what it's supposed to do, then instead of traversing backwards up the tree from the point where the data service is invoked (where the tree will end in an interface with no implementation details whatsoever apart from the signature) I have to for example go and look for a configuration XML file to see which class is mapped to said interface as the implementation before being able to access the actual implementation details. Are there any situations where having loose coupling can actually hurt maintainability?

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• When it's more productive to build your own framework than using an existing one?

  - by Pierre 303

  I would like to know why you decided to build your own framework in your company. By framework, I don't mean few libraries you use often. I mean a specific way of building applications on top of it, with base classes, convention, etc. So why did you built your own framework? How could you justify that to the person that employs you. Have you measure the positive and negative impact of it? Regarding your experiences, did you notice that in some case a company framework produced real benefits, or on the other hand, increased costs of development (learning curve, debugging, maintenance, ...)?

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• Remove a bad/erroneous WebPart from a SharePoint page

  - by KunaalKapoor

  If you've added a poorly written webpart to your 'default.aspx' page, the consequence of this action will be that you won't be able to load the page anymore... Don't be sad, there is still a way to remove the webpart from the page :) (Yes, even removing the webpart from the webpart gallery would not solve this issue).Steps to fix this:1. Append the following query string to your URL: ?Contents=1.Once you've added Contents=1 as a query string to the webpart page's URL it will display the Webpart Maintenance Page. Example: http://mysharepointserver/default.aspx?contents=12. On that page you can now see the webparts added to the page, delete the problematic webpart.Now try reloading the default.aspx page... Tadaaa!!! you can view your page again :)3. Leave a thank you note @ comments section :)

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• DotNetNuke Gallery Module - 7 Videos

  In this tutorial we cover the Installation of the DotNetNuke Core Gallery Module and show you how to configure it correctly. We walk you through how to use all of the features in the Gallery module including creating albums, uploading files, bulk uploads, the slideshow, media files, watermarks, templates, and more. The videos contain: Video 1 - Introduction to the DNN Gallery Module, Installation and Basic Configuration Video 2 - How to Upload Images and Configure Their Settings Video 3 - Creating Gallery Albums and Bulk Uploading Video 4 - How to Add Files and Albums Using FTP, Adding Music and Changing Permissible Upload Types Video 5 - How to Add Video Files, How to Rate Files, Gallery Look and Feel Video 6 - Changing Feature Settings, Adding Watermarks, Gallery Security Roles Video 7 - Working with Private Galleries and Security Roles, Gallery Maintenance Total Time Length: 57minsDid 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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• Auto-provisioning hosting via API

  - by user101289

  I've built a sort of 'software as a service' website package for a specific industry. What I am looking to do is create a payment gateway that allows users to subscribe-- and once the subscription is active, it would auto-provision a web hosting plan for them (a shared account on a server, probably in a chroot'd environment so each user would be insulated from others). Ideally it would auto-install a CMS as well. Tons of web hosts provide a simple reseller plan where I could manually create all the users' hosting accounts-- but so far none that I've found allow you to do this via API. Is there a way to do this short of writing custom shell scripts on something like an EC2 platform? I'd prefer to leave all the server maintenance in the hands of dedicated support staff rather than having to manually handle updates, backups, etc. Thanks for any tips.

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• 12.04 x64 Server Login Failure

  - by ThoughtCoder

  After some serious GRUB issues after routine kernel updates, forcing a grub-reinstall via chroot and some single-user mode maintenance, I now cannot login to my server (except via single-user mode) When attempting to SSH to the server my connection is reset immediately after entering username - no password prompt is presented. I've plugged in my monitor and keyboard to the headless server and when trying to login I receive: login: "PAM Failure, aborting: Critical error - immediate abort" immediately after entering my username - again, no password prompt is displayed. I am able to gain access via kernel recovery mode and login as root through single-user mode with networking. I've attempted a dpkg reconfigure believing I may have had some incomplete/borked packages, but to no avail. Looking through /etc/pam.d/login doesn't seem to lead me in any obvious directions and I'm afraid I'm out of ideas. Googling doesn't help me much, one guy reinstalled (really don't want to do this) and the rest I could find were old Gentoo related bugs. Any tips?

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• C2C - Customer 2 Cloud Program

  - by Hartmut Wiese

  What´s in it for partners? A special Webinar for EMEA partners The Blog Entry is referring to this EMEA CRM Community blog entry here. The new Oracle Customer 2 Cloud (C2C) Program offers sizeable CX Cloud business opportunities for our partners into their existing Siebel, Peoplesoft or Oracle eBusiness Suite customers installed base, leveraging financial incentives that allow customers switching part of their On Premises solutions' maintenance fees against Cloud subscriptions from the market leading provider of CX Cloud business solutions. Look at this introduction video to have a first feeling about the C2C program and then join us on Tuesday June 10th at 9am CET (8am UK) to find out how you and your customers can benefit from this program to secure existing Siebel, Peoplesoft or Oracle eBusiness Suite accounts while generating new business opportunities. Register here! added by Hartmut Wiese: JD Edwards is not explicitly mentioned for this program but I also did not found a remark that it is not included.

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• How to make XAMPP virtual hosts accessible to VM's and other computers on LAN?

  - by martin's

  XAMPP running on Vista 64 Ultimate dev machine (don't think it matters). Machine / Browser configuration Safari, Firefox, Chrome and IE9 on dev machine IE7 and IE8 on separate XP Pro VM's (VMWare on dev machine) IE10 and Chrome on Windows 8 VM (VMware on dev machine) Safari, Firefox and Chrome running on a iMac (same network as dev) Safari, Firefox and Chrome running on a couple of Mac Pro's (same network as dev) IE7, IE8, IE9 running on other PC's on the same network as dev machine Development Configuration Multiple virtual hosts for different projects .local fake TLD for development No firewall restrictions on dev machine for Apache Some sites have .htaccess mapping www to non-www Port 80 is open in the dev machine's firewall Problem XAMPP local home page (http://192.168.1.98/xampp/) can be accessed from everywhere, real or virtual, by IP All .local sites can be accessed from the browsers on the dev machine. All .local sites can be accessed form the browsers in the XP VM's. Some .local sites cannot be accessed from IE10 or Chrome on the W8 VM Sites that cannot be accessed from W8 VM have a minimal .htaccess file No .local sites can be accessed from ANY machine (PC or Mac) on the LAN hosts on dev machine (relevant excerpt) 127.0.0.1 site1.local 127.0.0.1 site2.local 127.0.0.1 site3.local 127.0.0.1 site4.local 127.0.0.1 site5.local 127.0.0.1 site6.local 127.0.0.1 site7.local 127.0.0.1 site8.local 127.0.0.1 site9.local 192.168.1.98 site1.local 192.168.1.98 site2.local 192.168.1.98 site3.local 192.168.1.98 site4.local 192.168.1.98 site5.local 192.168.1.98 site6.local 192.168.1.98 site7.local 192.168.1.98 site8.local 192.168.1.98 site9.local httpd-vhosts.conf on dev machine (relevant excerpt) NameVirtualHost *:80 <VirtualHost *:80> ServerName localhost ServerAlias localhost *.localhost.* DocumentRoot D:/xampp/htdocs </VirtualHost> # ======================================== site1.local <VirtualHost *:80> ServerName site1.local ServerAlias site1.local *.site1.local DocumentRoot D:/xampp-sites/site1/public_html ErrorLog D:/xampp-sites/site1/logs/access.log CustomLog D:/xampp-sites/site1/logs/error.log combined <Directory D:/xampp-sites/site1> Options Indexes FollowSymLinks AllowOverride All Require all granted </Directory> </VirtualHost> NOTE: The above <VirtualHost *:80> block is repeated for each of the nine virtual hosts in the file, no sense in posting it here. hosts on all VM's and physical machines on the network (relevant excerpt) 127.0.0.1 localhost ::1 localhost 192.168.1.98 site1.local 192.168.1.98 site2.local 192.168.1.98 site3.local 192.168.1.98 site4.local 192.168.1.98 site5.local 192.168.1.98 site6.local 192.168.1.98 site7.local 192.168.1.98 site8.local 192.168.1.98 site9.local None of the VM's have any firewall blocks on http traffic. They can reach any site on the real Internet. The same is true of the real machines on the network. The biggest puzzle perhaps is that the W8 VM actually DOES reach some of the virtual hosts. It does NOT reach site2, site6 and site 9, all of which have this minimal .htaccess file. .htaccess file <IfModule mod_rewrite.c> RewriteEngine On RewriteCond %{HTTP_HOST} !^www\. RewriteRule ^(.*)$ http://www.%{HTTP_HOST}/$1 [R=301,L] </IfModule> Adding this file to any of the virtual hosts that do work on the W8 VM will break the site (only for W8 VM, not the XP VM's) and require a cache flush on the W8 VM before it will see the site again after deleting the file. Regardless of whether a .htaccess file exists or not, no machine on the same LAN can access anything other than the XAMPP home page via IP. Even with hosts files on all machines. I can ping any virtual host from any machine on the network and get a response from the correct IP address. I can't see anything in out Netgear router that might prevent one machine from reaching the other. Besides, once the local hosts file resolves to an ip address that's all that goes out onto the local network. I've gone through an extensive number of posts on both SO and as the result of Google searches. I can't say that I have found anything definitive anywhere.

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• Error after installing Lubuntu 14.04 through liveUSB

  - by Veritas

  A friend asked me to install ubuntu on his toshiba NB 200 netbook to replace windows xp. I formatted the flash drive, ran an nb5sum check on the iso and after running netbootin , I checked the drive for errors. No problems so far. During the installation, while everything seemed normal, the installation regularly paused until I pressed a button or moved the mouse. After restarting, it doesn't boot and it starts a shell showing : "General error mounting filesystems A maintenance shell will now be started CONTROL-D will terminate this shell and reboot the system " Any ideas? Any help is appreciated!

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• SSRS Report Parts Versus Sub Reports FAQ

  I'm trying to decide on a development strategy to satisfy the reporting needs in my organization. I would like to increase our efficiency in responding to report requests, while minimizing our maintenance burden. Two topics that I would like to dig in to are Report Parts and Subreports. Can you provide some considerations for using one versus the other? NEW! SQL Monitor 2.0Monitor SQL Server Central's servers withRed Gate's new SQL Monitor.No installation required. Find out more.

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• Releasing patches and updates to web service users

  - by Kalidoss.M

  I have written one web services using Java. Its already live (Up & Running). During development I have SVN(repository) + Jira for task maintenance + Maven for building the web services. Now i have some small update for my web services and i have created that task in Jira and committed the files in svn with respect to Jira-Id after all testing, etc.. Say my web services is used by 10 clients, we did not give our source code to them. Is there any steps/procedure available to release patch/updates? Is there any way to render/create the change log at the build time (maven). How do i manage the change log for all version or Patch updates during build time? (Automatically)

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• PySide 1.0.0 beta 3 corrige 35 bogues qualifiés de haute priorité du binding Python pour Qt

  Sortie de PySide 1.0.0 beta 3 Elle corrige 35 bogues qualifiés de haute priorité du binding Python pour le framework Qt Par Jiyuu et dourouc05 le 07/01/2010 Nokia vient d'annoncer la sortie de la troisième beta de son binding Python du framework Qt. Cette nouvelle beta est principalement considérée comme une version de maintenance, corrigeant trente-cinq bogues de la deuxième beta, ces bogues étant qualifiés de haute priorité. Des versions corrigées de apiextractor, shiboken et libpyside, partie de la chaîne d'outils servant à la génération du binding, sont aussi disponibles. Actuellement, seule les sources de cette version sont disponibles ; des versions binaires devraient être d...

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• Register Today for the Oracle Value Chain Summit 2013

  - by Pam Petropoulos

  Date: February 4 – 6, 2013 Location: Hyatt Regency San Francisco The Oracle Value Chain Summit will bring together users, partners, and luminaries to learn how Oracle is helping companies transform supply chains into value chains to gain competitive edge. This Summit will combine the intimate atmosphere of previous supply chain  events, such as the Oracle PLM and Oracle Maintenance Summits, under one roof and will include almost 200 sessions across all supply chain management solution areas. Oracle’s AutoVue enterprise visualization solutions will be featured as part of the PLM track, where they’ll be showcased within the context of Agile PLM, as well as Oracle’s next generation visualization solutions.   Don’t miss this opportunity to learn more about visualization successes and best practices through sessions featuring customer testimonials, solution demonstrations, and networking activities. Visit the event site for further details and agenda information. An early bird registration fee of $195 is available until December 31, 2012. Click here to register today!

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• Next step after first few years at work [closed]

  - by juniordeveloper87

  Its been 2 years since graduating from uni and working in a IT solutions company as a programmer. My initial year was particularly exciting when we were trying to get a fresh product up to speed. The product has now gone live and are in the maintenance phase. My current day job involves merely bug fixing and also small designing/implementing change requests and also helping resolve issues faced from clients. Slowly I feel a little 'normal' in my role. I wonder how I can make myself stand out. (I work in a company of no more than 200 people) Or what should be the next step I take after 2 years doing programming? Thanks!

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• Online DATAFILE MOVE in Oracle Database 12c

  - by Ulrike Schwinn (DBA Community)

  Einige Operationen im Datenbankumfeld können nicht nur offline sondern auch online durchgeführt werden. Ein wichtiges Kennzeichen einer Online Operation ist dabei, dass Abfragen und DML Operationen während des Ablaufs der Operation (beispielsweise einer Reorganisation) ohne Unterbrechung weiter laufen können. Je nach einplanbarer Maintenance Zeit ist es daher durchaus wünschenswert, gewisse Operationen online durchzuführen. Generell gibt es in jedem Datenbankrelease einige Erweiterungen im Umfeld von Online Operationen. Besonders im aktuellen Release 12c gibt es eine Vielzahl neuer Operationen zu diesem Thema.Während der ersten 12c Veranstaltungen fand besonders das Kommando "DATAFILE ONLINE MOVE" besondere Aufmerksamkeit bei vielen Kunden. Aus diesem Grund wird im aktuellen Tipp dazu eine kleine Einführung gegeben.  Mehr dazu erfahren Sie hier. 

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• How to morph from a programmer noob to a guru?

  - by didxga

  I have been a programmer for two years, and i am getting hard to level up my skill especially working at legacy code maintenance right now. I think working hard is not enough to elevate my skill, because there are ton of opensource around us, the preoject i have been involved are all mixture of opensources --- from front end to back end from presentation tier to business logic tier. My work is just gluing all these together or something fewer complex which is to collect data from UI to logic module then retrieve the data processed and put it to UI. Sometime there is a need to add some simple logic(like assembling the data to a form that fit business logic interface) while transport data. Could you please give me any suggestion what should i do on the side to improve my skill? Thanks!

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• SQL Server SQLCMD Basics

  Sqlcmd makes many SQL Server tasks, such as automating test runs and maintenance tasks, easier and quicker. The sqlcmd command-line utility is valuable to any database developer or DBA as the prime means of executing batches of SQL Statements to SQL servers, and saving results to file. Rob Sheldon gives you the basic facts about this great utility. Get your SQL Server database under version control now!Version control is standard for applications, but databases haven’t caught up. So how can you bring database development up to speed? Why should you start? Find out…

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