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  • Getting a Database into Source Control

    - by Grant Fritchey
    For any number of reasons, from simple auditing, to change tracking, to automated deployment, to integration with application development processes, you’re going to want to place your database into source control. Using Red Gate SQL Source Control this process is extremely simple. SQL Source Control works within your SQL Server Management Studio (SSMS) interface.  This means you can work with your databases in any way that you’re used to working with them. If you prefer scripts to using the GUI, not a problem. If you prefer using the GUI to having to learn T-SQL, again, that’s fine. After installing SQL Source Control, this is what you’ll see when you open SSMS:   SQL Source Control is now a direct piece of the SSMS environment. The key point initially is that I currently don’t have a database selected. You can even see that in the SQL Source Control window where it shows, in red, “No database selected – select a database in Object Explorer.” If I expand my Databases list in the Object Explorer, you’ll be able to immediately see which databases have been integrated with source control and which have not. There are visible differences between the databases as you can see here:   To add a database to source control, I first have to select it. For this example, I’m going to add the AdventureWorks2012 database to an instance of the SVN source control software (I’m using uberSVN). When I click on the AdventureWorks2012 database, the SQL Source Control screen changes:   I’m going to need to click on the “Link database to source control” text which will open up a window for connecting this database to the source control system of my choice.  You can pick from the default source control systems on the left, or define one of your own. I also have to provide the connection string for the location within the source control system where I’ll be storing my database code. I set these up in advance. You’ll need two. One for the main set of scripts and one for special scripts called Migrations that deal with different kinds of changes between versions of the code. Migrations help you solve problems like having to create or modify data in columns as part of a structural change. I’ll talk more about them another day. Finally, I have to determine if this is an isolated environment that I’m going to be the only one use, a dedicated database. Or, if I’m sharing the database in a shared environment with other developers, a shared database.  The main difference is, under a dedicated database, I will need to regularly get any changes that other developers have made from source control and integrate it into my database. While, under a shared database, all changes for all developers are made at the same time, which means you could commit other peoples work without proper testing. It all depends on the type of environment you work within. But, when it’s all set, it will look like this: SQL Source Control will compare the results between the empty folders in source control and the database, AdventureWorks2012. You’ll get a report showing exactly the list of differences and you can choose which ones will get checked into source control. Each of the database objects is scripted individually. You’ll be able to modify them later in the same way. Here’s the list of differences for my new database:   You can select/deselect all the objects or each object individually. You also get a report showing the differences between what’s in the database and what’s in source control. If there was already a database in source control, you’d only see changes to database objects rather than every single object. You can see that the database objects can be sorted by name, by type, or other choices. I’m going to add a comment such as “Initial creation of database in source control.” And then click on the Commit button which will put all the objects in my database into the source control system. That’s all it takes to get the objects into source control initially. Now is when things can get fun with breaking changes to code, automated deployments, unit testing and all the rest.

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  • How to use crontab, .netrc, and git push?

    - by Jon
    Hi all, I am in the process of automating the backups from various servers to a central point then pushing those config changes into a git repo so i can track any changes over time. The rest of the scripts are working well, I can copy / rsync the files across the network to a central point. The last script is to get the config files to be put into / updated in repository. The script is as follows: #!/bin/bash clear SERVERNAME="betty" SCRIPTDIR="/home/jon" GITROOT="/tmp/git" TEMPROOT="/tmp/backups" BACKUPROOTDIR="/mnt/backups" echo " - running as user: $UID" echo "backingup git config on $SERVERNAME" echo "" # check to see if root backup folder exists, otherwise create it. if [ -d $GITROOT ]; then rm -rf $GITROOT fi mkdir $GITROOT cd $GITROOT echo " - testing if home is where I think it should be!" echo $HOME echo " - testing if it can see netrc" tail $HOME/.netrc git clone http://192.168.10.97:8000/repositories/HOH-config-backups.git cd HOH-config-backups echo " - copy Configuration Folders across" cp -r $BACKUPROOTDIR/Configuration/* $GITROOT/HOH-config-backups/ cp -r $BACKUPROOTDIR/scripts $GITROOT/HOH-config-backups/ git add . git commit -a -m "committing any new configuration changes!" git push origin master echo "" echo "Git repo updated" echo "" echo " - backing up this script" FIREWIGSCRIPTLOC="$BACKUPROOTDIR/scripts/$SERVERNAME" if [ ! -d $FIREWIGSCRIPTLOC ]; then mkdir $FIREWIGSCRIPTLOC fi cp /home/jon/gitConfig.sh $FIREWIGSCRIPTLOC The git repo is on a different machine in the network using Apache and HTTP-backend.exe (smart HTTP protocol). If I run this script as me "jon" it works. If I run it in crontab it fails. git uses the /home/jon/.netrc file for authentication: machine 192.168.10.97 login gitconfig password 1234579 The log from crontab is: TERM environment variable not set. - running as user: 1000 backingup git config on betty - testing if home is where I think it should be! /home/jon - testing if it can see netrc machine 192.168.10.97 login gitconfig password 1234579 got 08de5bc2b27b4940d9412256e76d5e3c3d9dbcdd walk 08de5bc2b27b4940d9412256e76d5e3c3d9dbcdd got be880f2d306778a538d592e7a02eb19f416612f7 got bd387e8def9f77aafa798bf53e80d949aba443e8 got 1bc1a59e12775841d4c59d77c63b8a73823138c2 walk bd387e8def9f77aafa798bf53e80d949aba443e8 Getting alternates list for http://192.168.10.97:8000/repositories/HOH-config-backups.git got 030512237bca72faf211e0e8ec2906164eac34f6 got 9bc2f575240bc1f61ff7d69777ce1a165d06b184 got b8400f7f01429104a9d4786a6bb1a16d293e37c1 got 2403b5bf611010e0b401f776f0e23b09ce744838 got 1a27944c48269ef3608a8f2466e43402d06faac0 got b686f45b7d57af4fa8ca0d528bb85216d6247e19 Getting pack list for http://192.168.10.97:8000/repositories/HOH-config-backups.git Getting index for pack ae881957c0f0e8c22eb6cc889a22ef78eb4ce6ff Getting pack ae881957c0f0e8c22eb6cc889a22ef78eb4ce6ff which contains ff84d6d48e9326066438d167a10251218d612b3d walk b686f45b7d57af4fa8ca0d528bb85216d6247e19 got 364e30daec17814073e668f490bb84af891fe1f7 got 23f6497e7f9b80e0d90adad73bd0407a0e5ac6ce got 9e77c47574b5e23ea669afe0c23ab235e4917ee1 got 6654e0d328a216b3783e98c47206cb2d01b3353d got 28821ffd437d2689ffb82c6e4b9c3f5372c95c4b got 8c384a24f645389e4d4b08013c79e9e73a658342 got d203be0123736ee025ce20c081f1489098648dfc got 1852603bf7709e71417d8ccec02390279d533642 got fb753a26b20b04694419fce8ecdaa8dbec105cf1 got 736028997cd84dd1c135f57e9d246674b9cd0b9d got 7af836249e20096d0476a548d5be702a071cdd4b got 240dc39d9db50df63073fc7927b2d002dfa0f54c got 93abd36e3935a01011eb753b635a1a0e984bf31e got c6269e28fecf4d8d0d98b9358aecb3acff02df44 got b0aa29432f73e64032682a351d436c24b14078ab walk 240dc39d9db50df63073fc7927b2d002dfa0f54c got 58fb66d9f35f8a5e32ff4683309c5f0c2a3a03c5 got 0da2def4de0565483cdbe6b87418ee2beb122e58 got 0f6a86c6f87ed52ad2ed01e5c6edd661d364930c got 437a93d27b5bb89c739a0564a34a616e832c3ebe got fe0385abe5c0acd8462268dac330bae00e934f1b got 24259f8f5c5c9ee974a75fe3d1e07c02e3e20fe9 got d29f624bf1a5eceedaa86c10fee35f62747c7d04 got 0154e4c987132585ea7a92b77d02dba285512d6b got eda8bf526567c25ee70addb2ad3c3c6aa57eac77 got 9f3d9d7262d66f9fa4f6a13b7c86199953f4bc4e got 8e20881e19667aa22245d0598646991067455a4d got abb1123145689b35eb19519952c71253ee45fa98 got dfeff593c79b4156ce2ce1adf043d0e80356488c got e20c5b48b1d360e0bcf34189e3f3d2bbf23e92cc got b13eb81cc274780322ecf786372320343926bec9 walk 8de83868b3fac748b0a55eba16c8f668ec852abb got b5961421bbc42afe7a07cc1c8b615aba26ba74d7 got 2650ba819019df4193b482733e29ca79b29f3f2c got b3111e1be8103e91803a97a817ed81f28025aca1 got b060be934d709684f5eb5dad3c03932a3589e864 got cf70d2043f081d7a4438e9d5a290a9f986c84060 got 80bf0f1cc836feab86d6935bb7968d8555a8d531 got da318d167920e34bc6573e4fc236249ccbbee316 got d82ac853d387b760149599e6e1ab96403f6ec672 got 0005f691d1f46550fdb4e56025f52e30a5b18cc2 Initialized empty Git repository in /tmp/git/HOH-config-backups/.git/ - copy Configuration Folders across Created commit 424df2f: committing any new configuration changes! 3 files changed, 55 insertions(+), 1 deletions(-) create mode 100755 scripts/betty/gitConfig.sh error: Cannot access URL http://192.168.10.97:8000/repositories/HOH-config-backups.git/, return code 22 error: failed to push some refs to 'http://192.168.10.97:8000/repositories/HOH-config-backups.git' Git repo updated - backing up this script cp: cannot create regular file `/mnt/backups/scripts/betty/gitConfig.sh': Permission denied my crontab is: # m h dom mon dow command 04 * * * * /home/jon/gitConfig.sh > /tmp/gitconfig.log 2>&1 I open it by doing: $crontab -e i.e. not as root. I am a bit confused as to why it is not running as my user (or what user id 1000 is). Not sure what I need to do to get the push with git to work within crontab. edit: found out about the userid: jon@betty:~$ id uid=1000(jon) gid=1000(jon) groups=4(adm),20(dialout),24(cdrom),46(plugdev),109(sambashare),114(lpadmin),115(admin),1000(jon) here is my $HOME/.gitconfig file: [user] name = Jon Hawkins email = [email protected] Thanks

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  • MySQL Connect 8 Days Away - Replication Sessions

    - by Mat Keep
    Following on from my post about MySQL Cluster sessions at the forthcoming Connect conference, its now the turn of MySQL Replication - another technology at the heart of scaling and high availability for MySQL. Unless you've only just returned from a 6-month alien abduction, you will know that MySQL 5.6 includes the largest set of replication enhancements ever packaged into a single new release: - Global Transaction IDs + HA utilities for self-healing cluster..(yes both automatic failover and manual switchover available!) - Crash-safe slaves and binlog - Binlog Group Commit and Multi-Threaded Slaves for high performance - Replication Event Checksums and Time-Delayed replication - and many more There are a number of sessions dedicated to learn more about these important new enhancements, delivered by the same engineers who developed them. Here is a summary Saturday 29th, 13.00 Replication Tips and Tricks, Mats Kindahl In this session, the developers of MySQL Replication present a bag of useful tips and tricks related to the MySQL 5.5 GA and MySQL 5.6 development milestone releases, including multisource replication, using logs for auditing, handling filtering, examining the binary log, using relay slaves, splitting the replication stream, and handling failover. Saturday 29th, 17.30 Enabling the New Generation of Web and Cloud Services with MySQL 5.6 Replication, Lars Thalmann This session showcases the new replication features, including • High performance (group commit, multithreaded slave) • High availability (crash-safe slaves, failover utilities) • Flexibility and usability (global transaction identifiers, annotated row-based replication [RBR]) • Data integrity (event checksums) Saturday 29th, 1900 MySQL Replication Birds of a Feather In this session, the MySQL Replication engineers discuss all the goodies, including global transaction identifiers (GTIDs) with autofailover; multithreaded, crash-safe slaves; checksums; and more. The team discusses the design behind these enhancements and how to get started with them. You will get the opportunity to present your feedback on how these can be further enhanced and can share any additional replication requirements you have to further scale your critical MySQL-based workloads. Sunday 30th, 10.15 Hands-On Lab, MySQL Replication, Luis Soares and Sven Sandberg But how do you get started, how does it work, and what are the best practices and tools? During this hands-on lab, you will learn how to get started with replication, how it works, architecture, replication prerequisites, setting up a simple topology, and advanced replication configurations. The session also covers some of the new features in the MySQL 5.6 development milestone releases. Sunday 30th, 13.15 Hands-On Lab, MySQL Utilities, Chuck Bell Would you like to learn how to more effectively manage a host of MySQL servers and manage high-availability features such as replication? This hands-on lab addresses these areas and more. Participants will get familiar with all of the MySQL utilities, using each of them with a variety of options to configure and manage MySQL servers. Sunday 30th, 14.45 Eliminating Downtime with MySQL Replication, Luis Soares The presentation takes a deep dive into new replication features such as global transaction identifiers and crash-safe slaves. It also showcases a range of Python utilities that, combined with the Release 5.6 feature set, results in a self-healing data infrastructure. By the end of the session, attendees will be familiar with the new high-availability features in the whole MySQL 5.6 release and how to make use of them to protect and grow their business. Sunday 30th, 17.45 Scaling for the Web and the Cloud with MySQL Replication, Luis Soares In a Replication topology, high performance directly translates into improving read consistency from slaves and reducing the risk of data loss if a master fails. MySQL 5.6 introduces several new replication features to enhance performance. In this session, you will learn about these new features, how they work, and how you can leverage them in your applications. In addition, you will learn about some other best practices that can be used to improve performance. So how can you make sure you don't miss out - the good news is that registration is still open ;-) And just to whet your appetite, listen to the On-Demand webinar that presents an overview of MySQL 5.6 Replication.  

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  • jQuery Datatable in MVC &hellip; extended.

    - by Steve Clements
    There are a million plugins for jQuery and when a web forms developer like myself works in MVC making use of them is par-for-the-course!  MVC is the way now, web forms are but a memory!! Grids / tables are my focus at the moment.  I don’t want to get in to righting reems of css and html, but it’s not acceptable to simply dump a table on the screen, functionality like sorting, paging, fixed header and perhaps filtering are expected behaviour.  What isn’t always required though is the massive functionality like editing etc you get with many grid plugins out there. You potentially spend a long time getting everything hooked together when you just don’t need it. That is where the jQuery DataTable plugin comes in.  It doesn’t have editing “out of the box” (you can add other plugins as you require to achieve such functionality). What it does though is very nicely format a table (and integrate with jQuery UI) without needing to hook up and Async actions etc.  Take a look here… http://www.datatables.net I did in the first instance start looking at the Telerik MVC grid control – I’m a fan of Telerik controls and if you are developing an in-house of open source app you get the MVC stuff for free…nice!  Their grid however is far more than I require.  Note: Using Telerik MVC controls with your own jQuery and jQuery UI does come with some hurdles, mainly to do with the order in which all your jQuery is executing – I won’t cover that here though – mainly because I don’t have a clear answer on the best way to solve it! One nice thing about the dataTable above is how easy it is to extend http://www.datatables.net/examples/plug-ins/plugin_api.html and there are some nifty examples on the site already… I however have a requirement that wasn’t on the site … I need a grid at the bottom of the page that will size automatically to the bottom of the page and be scrollable if required within its own space i.e. everything above the grid didn’t scroll as well.  Now a CSS master may have a great solution to this … I’m not that master and so didn’t! The content above the grid can vary so any kind of fixed positioning is out. So I wrote a little extension for the DataTable, hooked that up to the document.ready event and window.resize event. Initialising my dataTable ( s )… $(document).ready(function () {   var dTable = $(".tdata").dataTable({ "bPaginate": false, "bLengthChange": false, "bFilter": true, "bSort": true, "bInfo": false, "bAutoWidth": true, "sScrollY": "400px" });   My extension to the API to give me the resizing….   // ********************************************************************** // jQuery dataTable API extension to resize grid and adjust column sizes // $.fn.dataTableExt.oApi.fnSetHeightToBottom = function (oSettings) { var id = oSettings.nTable.id; var dt = $("#" + id); var top = dt.position().top; var winHeight = $(document).height(); var remain = (winHeight - top) - 83; dt.parent().attr("style", "overflow-x: auto; overflow-y: auto; height: " + remain + "px;"); this.fnAdjustColumnSizing(); } This is very much is debug mode, so pretty verbose at the moment – I’ll tidy that up later! You can see the last call is a call to an existing method, as the columns are fixed and that normally involves so CSS voodoo, a call to adjust those sizes is required. Just above is the style that the dataTable gives the grid wrapper div, I got that from some firebug action and stick in my new height. The –83 is to give me the space at the bottom i require for fixed footer!   Finally I hook that up to the load and window resize.  I’m actually using jQuery UI tabs as well, so I’ve got that in the open event of the tabs.   $(document).ready(function () { var oTable; $("#tabs").tabs({ "show": function (event, ui) { oTable = $('div.dataTables_scrollBody>table.tdata', ui.panel).dataTable(); if (oTable.length > 0) { oTable.fnSetHeightToBottom(); } } }); $(window).bind("resize", function () { oTable.fnSetHeightToBottom(); }); }); And that all there is too it.  Testament to the wonders of jQuery and the immense community surrounding it – to which I am extremely grateful. I’ve also hooked up some custom column filtering on the grid – pretty normal stuff though – you can get what you need for that from their website.  I do hide the out of the box filter input as I wanted column specific, you need filtering turned on when initialising to get it to work and that input come with it!  Tip: fnFilter is the method you want.  With column index as a param – I used data tags to simply that one.

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  • ASP.NET Web API - Screencast series Part 4: Paging and Querying

    - by Jon Galloway
    We're continuing a six part series on ASP.NET Web API that accompanies the getting started screencast series. This is an introductory screencast series that walks through from File / New Project to some more advanced scenarios like Custom Validation and Authorization. The screencast videos are all short (3-5 minutes) and the sample code for the series is both available for download and browsable online. I did the screencasts, but the samples were written by the ASP.NET Web API team. In Part 1 we looked at what ASP.NET Web API is, why you'd care, did the File / New Project thing, and did some basic HTTP testing using browser F12 developer tools. In Part 2 we started to build up a sample that returns data from a repository in JSON format via GET methods. In Part 3, we modified data on the server using DELETE and POST methods. In Part 4, we'll extend on our simple querying methods form Part 2, adding in support for paging and querying. This part shows two approaches to querying data (paging really just being a specific querying case) - you can do it yourself using parameters passed in via querystring (as well as headers, other route parameters, cookies, etc.). You're welcome to do that if you'd like. What I think is more interesting here is that Web API actions that return IQueryable automatically support OData query syntax, making it really easy to support some common query use cases like paging and filtering. A few important things to note: This is just support for OData query syntax - you're not getting back data in OData format. The screencast demonstrates this by showing the GET methods are continuing to return the same JSON they did previously. So you don't have to "buy in" to the whole OData thing, you're just able to use the query syntax if you'd like. This isn't full OData query support - full OData query syntax includes a lot of operations and features - but it is a pretty good subset: filter, orderby, skip, and top. All you have to do to enable this OData query syntax is return an IQueryable rather than an IEnumerable. Often, that could be as simple as using the AsQueryable() extension method on your IEnumerable. Query composition support lets you layer queries intelligently. If, for instance, you had an action that showed products by category using a query in your repository, you could also support paging on top of that. The result is an expression tree that's evaluated on-demand and includes both the Web API query and the underlying query. So with all those bullet points and big words, you'd think this would be hard to hook up. Nope, all I did was change the return type from IEnumerable<Comment> to IQueryable<Comment> and convert the Get() method's IEnumerable result using the .AsQueryable() extension method. public IQueryable<Comment> GetComments() { return repository.Get().AsQueryable(); } You still need to build up the query to provide the $top and $skip on the client, but you'd need to do that regardless. Here's how that looks: $(function () { //--------------------------------------------------------- // Using Queryable to page //--------------------------------------------------------- $("#getCommentsQueryable").click(function () { viewModel.comments([]); var pageSize = $('#pageSize').val(); var pageIndex = $('#pageIndex').val(); var url = "/api/comments?$top=" + pageSize + '&$skip=' + (pageIndex * pageSize); $.getJSON(url, function (data) { // Update the Knockout model (and thus the UI) with the comments received back // from the Web API call. viewModel.comments(data); }); return false; }); }); And the neat thing is that - without any modification to our server-side code - we can modify the above jQuery call to request the comments be sorted by author: $(function () { //--------------------------------------------------------- // Using Queryable to page //--------------------------------------------------------- $("#getCommentsQueryable").click(function () { viewModel.comments([]); var pageSize = $('#pageSize').val(); var pageIndex = $('#pageIndex').val(); var url = "/api/comments?$top=" + pageSize + '&$skip=' + (pageIndex * pageSize) + '&$orderby=Author'; $.getJSON(url, function (data) { // Update the Knockout model (and thus the UI) with the comments received back // from the Web API call. viewModel.comments(data); }); return false; }); }); So if you want to make use of OData query syntax, you can. If you don't like it, you're free to hook up your filtering and paging however you think is best. Neat. In Part 5, we'll add on support for Data Annotation based validation using an Action Filter.

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  • SQL Server source control from Visual Studio

    - by David Atkinson
    Developers have long since had to context switch between two IDEs, Visual Studio for application code development and SQL Server Management Studio for database development. While this is accepted, especially given the richness of the database development feature set in SSMS, loading a separate tool can seem a little overkill. This is where SQL Connect comes in. This is an add-in to Visual Studio that provides a connected development experience for the SQL Server developer. Connected database development involves modifying a development sandbox database, as opposed to offline development, where SQL text files are modified independently of the database. One of the main complaints of Data Dude (VS DBPro) is that it enforces the offline approach. This gripe is what SQL Connect addresses. If you don't already use SQL Source Control, you can get up and running with SQL Connect by adding a new project to your Visual Studio solution as follows: Then choose your existing development database and you're ready to go. If you already use SQL Source Control, you will need to link SQL Connect to your existing database scripts folder repository, so SQL Connect and SQL Source Control can be used collaboratively (note that SQL Source Control v.3.0.9.18 or later is required). Locate the repository (this can be found in the Setup tab in SQL Source Control). .and create a working folder for it (here I'm using TortoiseSVN). Back in Visual Studio, locate the SQL Connect panel (in the View menu if it hasn't auto loaded) and select Import SQL Source Control project Locate your working folder and click Import. This creates a Red Gate database project under your solution: From here you can modify your development database, and manage your changes in source control. To associate your development database with the project, right click on the project node, select Properties, set the database and Save. Now you're ready to make some changes. Locate the object you'd like to modify in the Solution Explorer, and double click it to invoke a query window or table designer. You also have the option to edit the creation SQL directly using Edit SQL File in Project. Keeping the development database and Visual Studio project in sync is as easy as clicking on a button. One you've made your change, you can use whichever mechanism you choose to commit to source control. Here I'm using the free open-source AnkhSVN to integrate Subversion with Visual Studio. Maintaining your database in a Visual Studio solution means that you can commit database changes and application code changes in the same changeset. This is desirable if you have continuous integration set up as you want to ensure that all files related to a change are committed atomically, so you avoid an interim "broken build". More discussion on SQL Connect and its benefits can be found in the following article on Simple Talk: No More Disconnected SQL Development in Visual Studio The SQL Connect project team is currently assessing the backlog for the next development effort, and they'd appreciate your feature suggestions, as well as your votes on their suggestions site: http://redgate.uservoice.com/forums/140800-sql-connect-for-visual-studio- A 28-day free trial of SQL Connect is available from the Red Gate website. Technorati Tags: SQL Server

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  • Silverlight Cream for April 09, 2010 -- #835

    - by Dave Campbell
    In this Issue: Tim Heuer, smartyP, and Kevin Moore. From SilverlightCream.com: Using XNA libraries in your Silverlight Windows Phone 7 applications Tim Heuer has a post up using XNA on WP7 to hook up sound to a 'normal' Silverlight WP7 app... so there ya go! Example Pivot Control for Windows Phone 7 smartyP acknowledges that he said he was done with the Pivot control for WP7 and yes he realizes we're most likely going to get one from Microsoft, but just like the rest of us, he just couldn't leave it alone :) Bag of Tricks Update (two years in the making) I found this via Cool view transitions using ZapScoller by Rudi Grobler, and it points at Kevin Moore's Bag of Tricks Update for Silverlight 4 and WPF ... just the fact that Robby Ingebretsen is using it means we should all rush to CodePlex and absorb it :) Stay in the 'Light! Twitter SilverlightNews | Twitter WynApse | WynApse.com | Tagged Posts | SilverlightCream Join me @ SilverlightCream | Phoenix Silverlight User Group Technorati Tags: Silverlight    Silverlight 3    Silverlight 4    Windows Phone MIX10

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  • HPCM 11.1.2.x - Outline Optimisation for Calculation Performance

    - by Jane Story
    When an HPCM application is first created, it is likely that you will want to carry out some optimisation on the HPCM application’s Essbase outline in order to improve calculation execution times. There are several things that you may wish to consider. Because at least one dense dimension for an application is required to deploy from HPCM to Essbase, “Measures” and “AllocationType”, as the only required dimensions in an HPCM application, are created dense by default. However, for optimisation reasons, you may wish to consider changing this default dense/sparse configuration. In general, calculation scripts in HPCM execute best when they are targeting destinations with one or more dense dimensions. Therefore, consider your largest target stage i.e. the stage with the most assignment destinations and choose that as a dense dimension. When optimising an outline in this way, it is not possible to have a dense dimension in every target stage and so testing with the dense/sparse settings in every stage is the key to finding the best configuration for each individual application. It is not possible to change the dense/sparse setting of individual cloned dimensions from EPMA. When a dimension that is to be repeated in multiple stages, and therefore cloned, is defined in EPMA, every instance of that dimension has the same storage setting. However, such manual changes may not be preserved in all cases. Please see below for full explanation. However, once the application has been deployed from EPMA to HPCM and from HPCM to Essbase, it is possible to make the dense/sparse changes to a cloned dimension directly in Essbase. This can be done by editing the properties of the outline in Essbase Administration Services (EAS) and manually changing the dense/sparse settings of individual dimensions. There are two methods of deployment from HPCM to Essbase from 11.1.2.1. There is a “replace” deploy method and an “update” deploy method: “Replace” will delete the Essbase application and replace it. If this method is chosen, then any changes made directly on the Essbase outline will be lost. If you use the update deploy method (with or without archiving and reloading data), then the Essbase outline, including any manual changes you have made (i.e. changes to dense/sparse settings of the cloned dimensions), will be preserved. Notes If you are using the calculation optimisation technique mentioned in a previous blog to calculate multiple POVs (https://blogs.oracle.com/pa/entry/hpcm_11_1_2_optimising) and you are calculating all members of that POV dimension (e.g. all months in the Period dimension) then you could consider making that dimension dense. Always review Block sizes after all changes! The maximum block size recommended in the Essbase Database Administrator’s Guide is 100k for 32 bit Essbase and 200k for 64 bit Essbase. However, calculations may perform better with a larger than recommended block size provided that sufficient memory is available on the Essbase server. Test different configurations to determine the most optimal solution for your HPCM application. Please note that this blog article covers HPCM outline optimisation only. Additional performance tuning can be achieved by methodically testing database settings i.e data cache, index cache and/or commit block settings. For more information on Essbase tuning best practices, please review these items in the Essbase Database Administrators Guide. For additional information on the commit block setting, please see the previous PA blog article https://blogs.oracle.com/pa/entry/essbase_11_1_2_commit

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  • BlueNES: A Bluetooth Connector for Classic NES Controllers

    - by Jason Fitzpatrick
    If you’re looking for a DIY way to hook up your classic Nintendo controllers for use in modern emulation programs, this hack allows you to use them without modifying the original casing or cables. Courtesy of Evan Dustin, we find this guide on hacking apart a broken NES unit (to get the basic parts like the port connectors) and then binding it all together with an Arduino board. Check out the video above to see it in action and then hit up the link below to check out the notes on the YouTube video for additional information including parts and code. BluesNES: Bluetooth NES Controller [via Hack A Day] HTG Explains: What Is RSS and How Can I Benefit From Using It? HTG Explains: Why You Only Have to Wipe a Disk Once to Erase It HTG Explains: Learn How Websites Are Tracking You Online

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  • How do I set a static DNS nameserver address on Ubuntu Server?

    - by Aleks
    I am trying statically to set DNS server addresses in my Ubuntu server running as virtual machine. I followed all recommendations on official Ubuntu support pages but I simply cannot get rid of my ISP's DNS servers set by DHCP. I assigned br0 interface on my host machine static IP address and eth0 on VM to use Google DNS and my own local DNS running on the second vm by setting it in /etc/network/interfaces. Tried to fiddle with head base and tail files in /etc/resolvconf/resolv.conf.d/ and tried to shuffle interface-order in /etc/resolvconf/interface-order but when I restarted network service I got the ISP's DNS addresses back every time. Is there a way that I can disable resolvconf and set up my resolv.conf file manually as I always did on Red Hat? Or at can you tell me which hook script keeps putting ISP DNSs in resolv.conf? My ISP don't allow me to change DHCP settings on my router so I cannot do it that way. Why is such a simple thing such as setting DNS servers got so complicated???

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  • Managing Scripts in Oracle SQL Developer

    - by thatjeffsmith
    You backup your databases, right? You backup you home computer – your media collection, tax documents, bank accounts, etc, right? You backup your handy-dandy SQL scripts, right? Ok, now that I’ve got your head nodding, I want to answer a question I get every so often: How can I manage my scripts in SQL Developer? This is an interesting question. First, it assumes that one SHOULD manage their scripts in their IDE. Now, what I think the question generally gets around to is, how can we: Navigate to our scripts Open them Execute them What a good IDE should have is an interface to your existing Version Control System (VCS.) SQL Developer supports out-of-the-box both Subversion and Git. You can also download an extension via check-for-updates to get support for CVS. Now, what I’m about to show you COULD be done without versioning and controlling your scripts – but I want to ask you why you wouldn’t want to do this? So, I’m going to proceed and assume that you do INDEED version your scripts already. Seeing what scripts you’ve already got in your repository This is very straightforward – just open the Team Versions panel. Then connect to your repository. Shows you the files in your source control system. Now, I could ‘preview’ said file right away. If I open the file from here, we get a temp file copy down from the server to the local machine. This is a local temp copy of the controlled script – I can read/execute, but not write to it. And that might be all you need. But, if your script calls other scripts, then you’re going to want to check out the server copy of your stuff down your local SVN working copy directory. That way when your script calls another script – you’re executing the PRODUCTION APPROVED copies of said scripts. And if you do SPOOL or other file I/O stuff, it will work as expected. To get to those said client copies of your scripts… Enter the Files Panel The Files panel is accessible from the View menu. You can get to your files, one of two ways. If you’ve touched the file recently, you can see it under the Recent tree. Otherwise, you can navigate to your local ‘checked out’ copies of your script(s). Open your local copies, see what’s changed, etc. And I can access the change history and see what’s been touched… What changes am I going to ‘push out’ if I commit this back to the server? Most of us work on teams, yes? This panel also gives me a heads up if someone else is making changes to the same file. I can see the ‘incoming’ changes as well. To Sum It Up… If I want to get a script to run: do a full get to your local directory open the script(s) The files panel will tell you if your local copy is out of date from the server and if you have made local changes you’ve forgotten to commit back up to the server and your fellow teammates. Now, if you’re the selfish type and don’t want to share, that’s fine. But you should still be backing up your scripts, and you can still use the Files panel to manage your scripts.

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  • How to Play PC Games on Your TV

    - by Chris Hoffman
    No need to wait for Valve’s Steam Machines — connect your Windows gaming PC to your TV and use powerful PC graphics in the living room today. It’s easy — you don’t need any unusual hardware or special software. This is ideal if you’re already a PC gamer who wants to play your games on a larger screen. It’s also convenient if you want to play multiplayer PC games with controllers in your living rom. HDMI Cables and Controllers You’ll need an HDMI cable to connect your PC to your television. This requires a TV with HDMI-in, a PC with HDMI-out, and an HDMI cable. Modern TVs and PCs have had HDMI built in for years, so you should already be good to go. If you don’t have a spare HDMI cable lying around, you may have to buy one or repurpose one of your existing HDMI cables. Just don’t buy the expensive HDMI cables — even a cheap HDMI cable will work just as well as a more expensive one. Plug one end of the HDMI cable into the HDMI-out port on your PC and one end into the HDMI-In port on your TV. Switch your TV’s input to the appropriate HDMI port and you’ll see your PC’s desktop appear on your TV.  Your TV becomes just another external monitor. If you have your TV and PC far away from each other in different rooms, this won’t work. If you have a reasonably powerful laptop, you can just plug that into your TV — or you can unplug your desktop PC and hook it up next to your TV. Now you’ll just need an input device. You probably don’t want to sit directly in front of your TV with a wired keyboard and mouse! A wireless keyboard and wireless mouse can be convenient and may be ideal for some games. However, you’ll probably want a game controller like console players use. Better yet, get multiple game controllers so you can play local-multiplayer PC games with other people. The Xbox 360 controller is the ideal controller for PC gaming. Windows supports these controllers natively, and many PC games are designed specifically for these controllers. Note that Xbox One controllers aren’t yet supported on Windows because Microsoft hasn’t released drivers for them. Yes, you could use a third-party controller or go through the process of pairing a PlayStation controller with your PC using unofficial tools, but it’s better to get an Xbox 360 controller. Just plug one or more Xbox controllers into your PC’s USB ports and they’ll work without any setup required. While many PC games to support controllers, bear in mind that some games require a keyboard and mouse. A TV-Optimized Interface Use Steam’s Big Picture interface to more easily browse and launch games. This interface was designed for using on a television with controllers and even has an integrated web browser you can use with your controller. It will be used on the Valve’s Steam Machine consoles as the default TV interface. You can use a mouse with it too, of course. There’s also nothing stopping you from just using your Windows desktop with a mouse and keyboard — aside from how inconvenient it will be. To launch Big Picture Mode, open Steam and click the Big Picture button at the top-right corner of your screen. You can also press the glowing Xbox logo button in the middle of an Xbox 360 Controller to launch the Big Picture interface if Steam is open. Another Option: In-Home Streaming If you want to leave your PC in one room of your home and play PC games on a TV in a different room, you can consider using local streaming to stream games over your home network from your gaming PC to your television. Bear in mind that the game won’t be as smooth and responsive as it would if you were sitting in front of your PC. You’ll also need a modern router with fast wireless network speeds to keep up with the game streaming. Steam’s built-in In-Home Streaming feature is now available to everyone. You could plug a laptop with less-powerful graphics hardware into your TV and use it to stream games from your powerful desktop gaming rig. You could also use an older desktop PC you have lying around. To stream a game, log into Steam on your gaming PC and log into Steam with the same account on another computer on your home network. You’ll be able to view the library of installed games on your other PC and start streaming them. NVIDIA also has their own GameStream solution that allows you to stream games from a PC with powerful NVIDIA graphics hardware. However, you’ll need an NVIDIA Shield handheld gaming console to do this. At the moment, NVIDIA’s game streaming solution can only stream to the NVIDIA Shield. However, the NVIDIA Shield device can be connected to your TV so you can play that streaming game on your TV. Valve’s Steam Machines are supposed to bring PC gaming to the living room and they’ll do it using HDMI cables, a custom Steam controller, the Big Picture interface, and in-home streaming for compatibility with Windows games. You can do all of this yourself today — you’ll just need an Xbox 360 controller instead of the not-yet-released Steam controller. Image Credit: Marco Arment on Flickr, William Hook on Flickr, Lewis Dowling on Flickr

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  • In NetworkManager, my nm-dispatcher is never called.

    - by Alain Pannetier
    I've got two Ubuntu laptops (both 10.10). One is a new Maverick install and the other has been upgraded many times since 9.04. On the latter, setting up a custom script hook in /etc/NetworkManager/dispatcher.d/ worked instantaneously. However, on the older laptop, I can't get nm-dispatcher to get called, or at least to execute its hooks. I've tried to run NetworkManager --no-daemon -log-level=DEBUG But there is no mention of nm-dispatcher. How can I Have a look at the source (I looked into the git repo but could not find anything. find why the nm-dispatcher never gets called.

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  • How to price code reviews to encourage good behavior?

    - by Chris Clark
    I work for a company that has a hosted .net internet application with many clients. Those clients often want to write customizations for our application. We have APIs to hook into the app, but the customizations themselves are written in .net. This is a shared, secure hosting environment and we have to code review these customizations before we can deploy them in our datacenter to ensure that they don't degrade performance, crash our servers, or open any security vulnerabilities. We charge for these code reviews. The current pricing model is simply a function of the number of lines of code. I think this is a bad idea for a variety of reasons, but primarily because, if we are interested in verifying that the code works as expected, we should be incentivizing good, readable code, not compaction. I would like to propose a pricing model that incorporates some, or all of the following as inputs: Lines of code Cyclomatic complexity Avg function length # of functions Are there any other metrics I should incorporate, or other ideas for how we can reasonably create pricing for code reviews that encourages safe and understandable code?

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  • Beginner Geek: How to Use Multiple Monitors to Be More Productive

    - by Chris Hoffman
    Many people swear by multiple monitors, whether they’re geeks or just people who need to be productive. Why use just one monitor when you can use two or more and see more at once? Additional monitors allow you to expand your desktop, getting more screen real estate for your open programs. Windows makes it very easy to set up additional monitors, and your computer probably has the necessary ports. Why Use Multiple Monitors? Multiple monitors give you more screen real estate. Hook up multiple monitors to a computer and you can move your mouse back and forth between them, dragging programs between monitors as if you had an extra-large desktop. People who swear by multiple monitors use them to display multiple things on-screen at a time. Rather than Alt+Tabbing and task switching to glance at another window, you can just look over with your eyes and then look back to the program you’re using. Some examples of use cases for multiple monitors include: Coders who want to view their code on one display with the other display reserved for documentation. They can just glance over at the documentation and look back at their primary workspace. Anyone who needs to view something while working. Viewing a web page while writing an email, viewing another document while writing an something, or working with two large spreadsheets and having both visible at once. People who need to keep an eye on information, whether it’s email or up-to-date statistics, while working. Gamers who want to see more of the game world, extending the game across multiple displays. Geeks who just want to watch a video on one screen while doing something else on the other screen. Hooking Up Multiple Monitors Hooking up an additional monitor to your computer should be very simple. Most new computers come with more than one port for a monitor — whether DVI, HDMI, the older VGA port, or a mix. Some computers may include splitter cables that allow you to connect multiple monitors to a single port. Most laptops also come with ports that allow you to hook up an external monitor. Plug a monitor into your laptop’s DVI or VGA port and Windows will allow you to use both your laptop’s integrated display and the external monitor at once. This all depends on the ports your computer has and how your monitor connects. If you have an old VGA monitor lying around and you have a modern laptop with only DVI or HDMI connectors, you may need an adapter that allows you to plug your monitor’s VGA cable into the new port. Be sure to take your computer’s ports into account before you get another monitor for it. Managing Multiple Monitors With Windows Windows makes using multiple monitors easy. Just plug the monitor into the appropriate port on your computer and Windows should automatically extend your desktop onto it. You can now just drag and drop windows between monitors. To control how this works, right-click your Windows desktop and select Screen resolution. Choose an option from the Multiple displays box. The Extend option extends your desktop onto an additional monitor, while the other options are mainly useful if you’re using an additional monitor for presentations — for example, you could mirror your laptop’s desktop onto a large monitor or blank your laptop’s screen while it’s connected to a larger display. Be sure to arrange your monitors properly so Windows understands how your monitors are physically positioned. Windows 8 allows you to extend your Windows taskbar across multiple monitors. You’ll find this option in the taskbar’s options window — right-click the taskbar and select Properties. You can also choose where you want Windows to display taskbar buttons for open programs — on any monitor’s taskbar or only on the taskbar on the associated monitor. Windows 7 doesn’t have these convenient features built-in — your second monitor won’t have a taskbar. To extend your taskbar onto an additional monitor, you’ll need a third-party utility like the free and open-source Dual Monitor Taskbar. If you just have a single monitor, you can also use the Aero Snap feature to quickly place multiple Windows applications side by side. On Windows 7 or 8, press Windows Key + Left or Windows Key + Right to make the current window take up the left or right half of your display. You could also drag any window’s title bar to the left or right edges of your screen and release the window. How useful this feature is depends on your monitor’s size and resolution. If you have a large, high-resolution monitor, it will allow you to see a lot. If you have a smaller laptop monitor with the seemingly standard 1366×768 resolution, you won’t be able to see much of each snapped window at once, so snapping windows may not be practical. Image Credit: Chance Reecher on Flickr, Camp Atterbury Joint Maneuver Training Center on Flickr, Xavier Caballe on Flickr     

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  • Scripting for a C#, multiplayer game

    - by Vaughan Hilts
    I have a multiplayer game written in C# and we've recently been creating a lot of content but have been looking for a way to give our entities customization logic that the designers can hook into. I took a look at this post. With something like this in mind (using C# as a scripting language); I have a few questions. 1) Would one embed the script itself in the entity object before persisting to it to the disk? Is this okay? 2) Would I compile once per scripting then - this seems like a lot of overhead to store all these compiled Assemblies to execute. Any general advice on how to do thigns is welcome, too. These entities are generated on the fly inside the editor and could be composed of a lot of different things.

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  • Buddypress with bbpress: Showing latest topics on front page

    - by MadsMadsDk
    I'm doing a wordpress solution with BuddyPress and bbPress, where I need to display the five newest topics on the homepage, as if it was blog-entries, but it seems kind of hard to accomplish. I'm figuring I gotta do something with the activity stream, but it seems like the stream is based on the user who is currently logged in, which is not what I want. So what should I do? Use a nifty plugin that does the trick (maybe someone knows a plugin I don't know of, as I've already tried the bbPress Latest Discussion plugin) Hardcode a forum-activity loop into the page-template file, using the is_front_page() function? Is there a forum-activity hook, that display the latest forum topics sitewide? Thanks in advance

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  • Network Manager kicks off abruptly

    - by Vijay Selvaraj
    I have installed Ubuntu 10.10 and trying to connect with my ADSL Wireless broadband internet modem using Linksys WUSB600N receiver. The good news is the OS is able to detect my wifi network and I am able to hook to network over WPA authentication with basic settings. But the network goes off abruptly and never connects again until I reboot the machine. I have Windows 7 as dual boot on my machine. The same adapter works perfectly with Windows 7 but not in Ubuntu. Is there anything in need to tweak to make things working or do I need to try any other better network manager on Ubuntu?

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  • no back light on my acer aspire 5734z

    - by Dave
    I installed Ubuntu (12.04) on my acer aspire 5734z and the back light stopped working. I have tried the fix by editing the grub file posted on here a couple of days ago but that hasn't fixed it. I have also looked for hardware drivers but that didn't get me anywhere. When I hook up an external monitor it works fine but i have been unsuccessful getting the laptop display to light up. Thanks edit removed link I found a fix here " http://crunchbanglinux.org/forums/post/66562/#p66562 " if anyone has a better fix than the one in that post, let me know.

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  • Enabling DHCP without being connected

    - by Joe Philllips
    I was installing Ubuntu server the other night and I was not able to hook up to the network while installing because I don't have a monitor for my desktop machines. I had to go into the living room and connect to the HDTV instead. This leaves me without network connectivity. When installing it asks how I would like to set up the network. I would like to enable DHCP but it tries to detect a gateway when I do this and obviously it doesn't find anything. It won't let me move on without setting up an IP manually at that point. Isn't there a way I can enable DHCP for the next time it boots up instead? Why the need for it right then and there?

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  • Connectify Dispatch Links Multiple Network Nodes Into a Mega Connection

    - by Jason Fitzpatrick
    Connectify Dispatch wants to change the way you interact with the networks around you by making it dead simple to mesh all available Wi-Fi, Cellular, and Ethernet connections into a massive and stable pipeline. Dispatch makes it open-and-click easy to hook up multiple Wi-Fi nodes, your cellphone, and even Ethernet connections into a single blended connection. While the video above gives a great overview of the process, check out the video below to see it in real world action: The project is currently in the last phase of KickStarter funding, so now is a great time to score Connectify Dispatch at a steep discount–pledging as little as $10 to fund the project, for example, scores you 50% of a 6-month Pro license. Hit up the link below to read more about the project, check the KickStarter status, and see all the neat features in the development pipeline. Dispatch: The Internet, Faster. [KickStarter] HTG Explains: What The Windows Event Viewer Is and How You Can Use It HTG Explains: How Windows Uses The Task Scheduler for System Tasks HTG Explains: Why Do Hard Drives Show the Wrong Capacity in Windows?

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  • window borders, menu bar missing over VNC

    - by zacaj
    I'm running Ubuntu 14.04 with Unity and Gnome3, however I don't have a screen hooked up anymore. I have installed x11vnc and run it with "-create" so that it will create a new X11 session, however when I VNC to it, the menu bar, window borders, etc are missing, windows are ordered based on creation time, and cannot be resized. Now, I don't really care if I end up with Ubuntu or Gnome's window manager, as long as this doesn't mess up my normal desktop stuff if I should happen to hook a monitor up again, and I'm not even attached to x11vnc if someone can point me to a good complete tutorial using something else, but I've been trying vino and tightvnc and rdp and x11vnc is the only one I've managed to get this far.

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  • run a script on window switch (on alt-tabbing into/outof a particular app)

    - by hwjp
    I'd like to run a script whenever I switch into or out of a window. Specifically, I have a "toggle touchpad on/off" script, which i want to run whenever I switch into or out of gvim. so, is there any kind of hook for that? even something that can be run whenever alt-tab is detected, as long as it can tell what window you're going from/to? I'm using gnome-shell, if that makes any difference. [edit] Have started looking into gnome-shell-extensions, which seem to be written in javascript, so might not be too hard to hack one together myself...

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