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SQL Saturday 2015 – South Florida #379

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Thank you to Nova Southeastern University(NSU), all sponsors, speakers and volunteers for putting on a great SQL Saturday #379. Met lots of passionate people that showed how much of a community we have in Broward County. I attended the following sessions and talked to lots of people about Code for Fort Lauderdale.


DH2i & DxEnterprise Stand-Alone to Clustered in Minutes

Carl Berglund

This was a vendor session for DH2iworks across multiple SQL versions and OSes. It was a very interesting session, particularly for a developer less familiar with virtual environments (at least standing them up, configuring, updating, feeding, watering, etc.). I know that for me, it introduced the following new and/or less familiar terms.

  • quorum – the minimum number of members of a deliberative assembly. In the context of Clustering and High Availability, it is minimum number of nodes that must be in a cluster for it to be viable.
  • InstanceMobility – The ability to move an instance of a virtual machine across physical machine boundaries
  • SAN – Consolidated block level storage (as opposed to file level storage). Only block level operations are supported.
  • Internet Small Computer System Interface(iSCSI) SAN – Allows for the emulation of a SAN over IP networks

The DH2i & DxEnterprise works across multiple SQL versions and OSes. Microsoft Clustering is not designed for Quality of Service(QoS). I was impressed by the demo given showing how to build out a 2 node cluster. You can see the steps below.

  1. Create individual nodes
  2. Add the disks
  3. Create a vhost
  4. Set the two nodes to be active on this vhost

In the demonstration, one node was running Windows Server 2008 R2 and the other node was running Windows Server 2012. He explained how this simplifies implementing a non-traditional cluster(different OS/SQL versions). As an added benefit, it provides a way to perform a consistent install on each node.

References

 

  1. Wikipedia: Storage area network
  2. Wikipedia: iSCSI

 


PowerShell and Python – The Clash Part Deux

Jorge Besadaz (jbesada@carnival.com, jbesada@yahoo.com)

Below is a comparison between Python and PowerShell.

PowerShell

  • Powershell is installed by default.
  • Politically correct to use PowerShell
  • Can instantiate .NET classes
  • “Steal from the Best, And Create the Rest”. Chad Miller is better than you, see for yourself on CodePlex.
  • PowerGUI Script Editor

Python

  • Easy to learn
  • Very good support for windows
  • has modules for everything
  • has “batteries included” philosophy

JetBrains makes an outstanding Python editor called PyCharm. In python, indentation is equivalent to brackets. You can use python to call sqlcmd.

There is a great video from Jeff Snover, PowerShell Creator, that you can watch. You can find the presentation here.

References

  1. http://www.maxtblog.com/2015/06/powershell-in-south-sql-saturday-379-was-a-great-success/
  2. http://bost.ocks.org/mike/bar/

PowerShell with Visual Studio SQL Data Tools

Max Trinidad
maxtblog.com
Florida PowerShell User Group

Max demonstrated how to debug PowerShell with Visual Studio and use many of the data tools available. There were big changes between versions of powershell (2-5).

New/Enhanced Features

Rival Editors

  1. SAPIEN is editor of choice.
  2. PowerShell Studio 2012
  3. PrimalXML
  4. SharpDevelop

Takeaway

“I can do it. You can do it!” -Max

Page.ClientScript.RegisterStartupScript is not working : A Solution

Code Wala

This is going to be a very short post but will be useful many developers.

You have registered some JavaScript block from server side. But it’s not working. Actually it’s not getting rendered on Client side when you see the PageSource. But the same code works in different projects/applications/pages. Say you have code like this

It is registering one one startup script that will be fired when the page will be loaded.
Say you have used at several time and it was working but now it is failing.  Similarly Page.ClientScript provide many other methods that will also not work.

One of the main reasons is, We start using Ajax on our pages. Ajax requires a ScriptManager to handle all the ajax related (Partial postback) tasks. Ajax requires lots of JavaScript code that is managed by the ScriptManager. And it must be noted on a single page only one instance…

View original post 58 more words

Nuget Gotcha: Update-Package Edition

Let me start off by stating that Nuget, FluentValidation and Identity Manager are all great tools. Unfortunately their mutual greatness doesn’t prevent issues from arising.

The Gotcha

Having a beta version of one nuget package (e.g. Identity Manager) and trying to update an independent package (e.g. FluentValidation). You run the Update-Package command only to be greeted with the following

You can view a screenshot of this below.

update-package_FluentValidation_ErrorWorkaround

The solution is to use the -pre flag in addition to update-package. However I still don’t understand why updating one package depends on an unrelated one.

Works

Doesn’t Work

Solution

To Nuget’s credit, they have this issue and it should be included in an upcoming release.

Powershell: Queuing Multiple TFS Builds

Problem

I needed to automate a full deployment of all my services, databases and the client that consumed them frequently.

Context

I am using an on premise installation of TFS 2012 and Visual Studio 2015. I needed to leverage multiple builds since msbuild arguments (the ones that you use to automatically publish/deploy) apply to every project/solution being built. This can potentially lead to multiple different builds.

Solution

Fortunately, this can be accomplished using PowerShell. TFS provides a good useful well-documented interface.

Below are some helpful references that I found on my way to the above solution.

References

  1. TFS Build API by Example #1: Queue a build.
  2. Queuing TFS Build from Powershell Script Which is Called from TFS Build
  3. Queuing a build in PowerShell
  4. relative path in Import-Module
  5. Powershell import-module doesn’t find modules
  6. How to set a custom tfs build parameter using powershell

ASP.NET MVC Gotcha: Model Error Ordering

I had the following peculiar bug with the way Model Errors were presented in the view for my ASP.NET MVC 2 website. The code for the view is below.

You can see the ordering of the fields is First Name, Last Name, Name and Phone. As you can imagine, the validation messages should reflect this ordering. However I was getting the following output instead.ValidationMessagesInOrder

This isn’t a show stopper issue, but it is the kind of things that customers notice (and good QA people). After registering, users add more information at this screen. For this reason, it should be as elegant as possible to keep them coming back. I assumed this would be an easy fix. I’d just go to the validation code and fix the ordering of the errors.

You can see from the code that it is yielding the validation errors the same way that I would like them to be presented. As it turns out, this didn’t make a whole lot of difference. Then I realized that the validation code was not the issue at all.

The errors are displayed in the order that the properties are listed in the mode.

I’ll give you a moment to allow that to sink in. It’s an issue that is difficult to diagnose but easy to rectify. The original model property ordering below outputs the incorrect ordering.

The model should appear like below to achieve the desired user experience.

Once you make that change, the errors display like below.

CorrectOrdering

Commerce Server 2009: Profile Definitions 404 Error

I opened up Commerce Server Manager expecting to be able to browse to the Profile Definitions in Commerce Server 2009 using Commerce Server Manager. Instead of the expected interface, I was greeted with “Server Error in Application ‘Default Web Site’ HTTP Error 404.0 Not Found” like the screen shot below.

CommerceServer404Error

This can be rectified with the below steps.

  1. Open Internet Information Services(IIS) Manager
  2. Right Click on Default Web Site
  3. Click Add Virtual Directory
  4. Enter Widgets under Alias
  5. Enter c:\Program Files (x86)\Common Files\Microsoft Shared\Enterprise Servers\Commerce Server\Widgets under Physical Path

AddVirtualDirectory

After following those steps and refreshing Commerce Server Manager you should see the below interface.

CommerceServer404Fixed

That’s it!

Authentication Failed SharePoint 2010 Edition

I stood up a development that featured both Commerce Server 2007 and SharePoint 2010. Within the environment, there is a public site and a private site. The SharePoint public site authenticates with a custom provider for Commerce Server 2007. The SharePoint private site uses windows authentication. Once the public site loaded correctly, I was greeted by the below Authentication Failed Exception on the private site. You can see from the screenshot below that it’s not pretty.

Server Error in '/' Application.  Authentication failed.  Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.  Exception Details: System.Runtime.InteropServices.COMException: Authentication failed.   Source Error:  An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.   Stack Trace:     [COMException (0x80040e4d): Authentication failed.  ]     Microsoft.CommerceServer.Interop.Profiles.ProfileServiceClass.GetProfileByKey(String bstrKeyMemberName, Object sValue, String bstrType, Boolean bReturnError) +0     Microsoft.CommerceServer.Runtime.Profiles.Profile..ctor(ProfileContext profileService, String keyName, String keyValue, String profileType) +156     [CommerceProfileSystemException: Failed to retrieve profile.]     Microsoft.CommerceServer.Runtime.Profiles.Profile..ctor(ProfileContext profileService, String keyName, String keyValue, String profileType) +504     Microsoft.CommerceServer.Runtime.Profiles.ProfileContext.GetProfile(String keyName, String keyValue, String profileType) +647     Microsoft.CommerceServer.Runtime.CommerceContext.get_UserID() +744     Microsoft.CommerceServer.Runtime.CommerceDataWarehouseAuthenticationModule.OnPreRequestHandlerExecute(Object sender, EventArgs e) +73     Microsoft.Commerce.Providers.SharePointCommerceDataWarehouseAuthenticationModule.OnPreRequestHandlerExecute(Object sender, EventArgs e) +288     System.Web.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +80     System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +171     Version Information: Microsoft .NET Framework Version:2.0.50727.5485; ASP.NET Version:2.0.50727.5491

Unfortunately, the stack trace here doesn’t provide too much direction.

I checked the Event Viewer to try glean some useful information. I found the following event.

This only offered misdirection and confusion as it referenced the Commerce Server in the stack trace, which couldn’t be the case since this site used Windows Authentication. The solution came down to the aspnet:AllowAnonymousImpersonation setting, which was configured to true. Once it was modified to false, the site came up as desired. Below is the working configuration.

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