October 18, 2012


Filed under: Uncategorized — Tags: , — Arne Joris @ 12:10 pm

SQLTalkIconOne of the perks of doing software development for small- and medium sized organisations is that you get involved in all aspects of IT.  In our projects at we have done backup, workstation and router configuration, printer troubleshooting, mail merge support and, of course, database maintenance.
Database administration skills are a must when you develop line-of-business applications, and most of us know our way around the usual suspects: Orace, SQL Server, MySql and sometimes even DB2, Informix or PostgreSQL.

When you specialize in legacy application renewal, you sometimes come across more exotic database varieties. In this article, I’ll share my knowledge of SQLBase , a variety I came across earlier this year.

SQL what now ?

Gupta SQLBase was one of the first relational databases for the PC in the 80s. It has changed owners several times in its 30 years, but currently it seems to target embedded platforms, claiming to be a ‘no maintenance’ RDBMS. But back in the mid to late 90s, SqlBase was still a very popular relational database technology for PC platforms, which is why some of the older legacy apps still use them.

I have been helping a client out with DBA services for an aging 7.6.1 release of SQLBase. To give you an idea of how old that is: the hardware requirements state that you need at least 24MB of RAM available on Windows 95, 98, NT or windows 2000 :-)


July 28, 2011

Mapguide Development Tips from The Map Guy(de)

Filed under: Mapguide,Uncategorized — Tags: — Darrin Maidlow @ 3:41 pm

Jackie Ng posted a great post on that I wanted to share with you – some great tips for anyone starting out with Mapguide development or even seasoned pros!   I especially enjoyed his thoughts on antique browsers =) Thanks Jackie!  I have a couple of things to add to his list.   My first addition to his list would be Chrome.  I did have a few problems with firebug causing random ajax errors to occur in the Mapguide javascript which prompted me to switch to Chrome and its development tools.  I have not looked back…

The other thing I have to add is 6.0.  Every .NET developer should have this incredible toolset.   It really does enhance the Visual Studio IDE.  The javascript/ajax support is great with some syntax highlighting, the .NET refactoring and code generation tools are huge productivity enhancements once you get them figured out.   I couldn’t live without the navigation and  on-the-fly code analysis tools.  The built-in de-compiler can be incredibly handy too, and ties right in with the navigation tools.

If you are into Mapguide dev, I strongly encourage you to check out Jackie’s post – and become a regular reader of .

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May 22, 2009

Finally an Oracle x64 client that works on Vista – AKA Getting Map 2010 x64 running with Oracle…

Filed under: Uncategorized — Tags: , , — Darrin Maidlow @ 4:01 pm

As my legion of dedicated readers know, I’m an 64 Bit zealot.  I would love to see a Windows task manager free of *32.  It keeps me up at night…well not really but, whatever. =) Autodesk recently released – the first native x64 release.  How could I resist installing that?  I had this funny feeling I would regret this decision.  Somehow, somewhere I just knew I would end up in once again.  So I installed Map 2010, started it up and tried to connect to my Oracle server.  You guessed it.  Connection Failed.

The problem is this.   x64 Applications cannot use the x86 driver.  In my previous attempts to get basic Oracle/ODP connectivity on my x64 Vista machine I ended up running the 11g x86 Oracle client.  Today I was back to the Oracle download site – and lookie lookie.  They’ve released an !  2008 is basically Vista so, maybe, just maybe – I thought Oracle will give us some x64 love.  Here are some steps that will help you get running:

First thing is first.  Backup your TNSnames.ora.  Its found in the network\admin folder. 

Next I un-installed the x86 client.   Delete the leftovers with windows explorer.

Next download both the client for both x86 and x64 (yes, we need to run with both…)

First I installed the x64 client.  I like to do full runtime installations. 

Next, I copy my backed up tnsnames.ora into the network\admin folder.

Now fire up Map 2010 x64 – connect to Oracle server – Success!  Happy Happy Days.  Unfortunately, fire up (which is still 32 bit) and it fails with an error of “Cannot find OCI.DLL”.  Doh.

So, I go ahead and install the Oracle  x86 client.  I install it to the client_2 folder.  Then copy my tnsnames backup into the network\admin folder in the client_2 folder.  Restart Toad, and success!

Now I want to check one last thing.  Last time I was dealing with this fun issue – I had to set my development projects to only run in x86 mode.  So, I fire up my development project and try it out.  Running IIS in x86 mode works.   Running IIS in x64 mode failed..

The ‘MSDAORA’ provider is not registered on the local machine

It seems the Microsoft MSDAORA provider doesn’t exist in x64 – so change your connection to use the Oracle OraOLEDB.Oracle instead and x64 projects run no problem.  It would be perfect to one day get one install that does both x86 and x64 – but for now, I’m content with this setup.

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September 25, 2008

Mapguide 6.5 Server – Missing the Autodesk Spatial Data Provider for Oracle Spatial

Filed under: Uncategorized — Tags: — Darrin Maidlow @ 7:41 am

Over the years, this problem has sporadically appeared (probably once or twice a year).  In the Mapguide 6.5 server admin when creating a new data source the Autodesk Spatial Data Provider for Oracle Spatial doesn’t appear as an option.  Every time this comes up I end up wracking my brain to remember what the solution is.  I know I’ve dealt with this many times – but I cannot remember the details.  Usually it’s occurring on a customer’s production server which is not a place I like to mess around.  This time, it was my development server – let the messing around begin!

In a nutshell this is a result of installing Mapguide server before the Oracle client is installed on the server.  The solution is to do a repair install of Mapguide Server (or a re-install if you prefer) once the Oracle client is installed.  Hopefully next year when this comes up again – writing this down will help me remember.  Worst case Google might pick this up and I’ll find my own post when I search for it…

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May 1, 2008

Manually configure Mapguide 2009 Web Tier on Vista x64 IIS7

Filed under: Uncategorized — Tags: , — Darrin Maidlow @ 3:37 pm

My configuration is this. I have a 32 bit window server running IIS6 and Mapguide server. however for development purposes and local debugging I needed the web tier to be run from my workstation – but working with my network Mapguide enterprise server.

First off, you need to ensure that IIS 7 is installed on the Vista machine, you also need to specify ASP.NET and the ISAPI components be installed. To start off, run the web tier installation and choose a manual installation. I did a custom install, and did not install the php, site admin, or java components. I installed my web tier to C:\inetpub\MapGuideEnterprise2009. It is critical that you do not install it to the default location in program files (x86), or the Vista permissions will break everything. You will know this has occurred because your map will show all question marks in the layer legend, and no map data.  In the server log you will see session timeout errors.  If you do install it to the default location, just move the entire folder structure out of program files (x86).

Finish the installer, this should deploy the needed Mapguide files. I noticed a bit of a delay in the copying new files portion of the installer. Seemed to be hung for several minutes, but it did complete.

Now start up IIS manager (start / run / inetmgr)

This is the ‘hard’ part. It looks nothing like what I was expecting.  IIS Internet Manager has been pretty static for the past, oh ten years…

A default web site should be configured – double click on the computer in the left pane to expand the tree.



First off – we’re going to create a new application pool specifically for Mapguide. This will save us some problems down the road. If you are not familiar with them, application pools are a newer concept introduced in IIS 6. Each application in IIS requires an application pool. Only one version of the .NET framework can be used by a single application pool. We’re going to set this pool to use .NET 2.0 (which also includes 3.0 and 3.5)



The most important reason for a new application pool is to set this pool/worker process to run in 32 bit mode. Select the new application pool and choose Advanced Settings. Change Enable 32-Bit Applications to true.



If you do not set the pool to run as 32 bit, you will get an error message that says:

"The page you are requesting cannot be served because of the Multipurpose Internet Mail Extensions (MIME) map policy that is configured on the Web server. The page you requested has a file name extension that is not recognized, and is not allowed."

A new behavior in IIS7 is a change between virtual directories and applications. In IIS6 and below, we would create a virtual directory, and then add an application to the properties of that virtual directory. With IIS7, we right click and instead of choosing Add Virtual Directory we choose Add Application. So let’s add a new application to the Default Web Site.

For simplicity, I’m re-creating the structure exactly as defined on my Windows 2003 server. Once the application is created, right click on it and choose Add Application. So right click on the default web site and choose add application. Call it Mapguide2009 and choose the newly created mapguide2009 application pool.

Next we need to right click on the Mapguide2009 application and create two new applications. One called mapviewerdwf, and mapviewerajax. Each of these apps must point to the same location – the mapviewernet folder. (by default its location is C:\Program Files (x86)\Autodesk\MapGuideEnterprise2009\WebServerExtensions\www\mapviewernet – but we need to use c:\inetpub\wwwroot\ MapGuideEnterprise2009\WebServerExtensions\www\mapviewernet) The other difference is that for each application, we must set the default document to be dwfviewer.aspx and ajaxviewer.aspx respectively. To set the default document select the new application in the tree and double click Default Document in the central pane. Enter the appropriate default document.



Next we need to setup a script mapping for the FCGI. Select the Mapguide2009 application and we are going to create yet another application. Call this application mapagent. This should act like adding an application to an existing folder in IIS6. Next, double click on Handler Mappings. In the top right, select Add Script Map. On the script mapping form, enter MapAgent.fcgi (or *.fcgi) for the request path. Browse to and select the isapi_MapAgent.dll from the www\mapagent folder. Under request restrictions, you can also set the verbs to GET,POST.



Click Ok and you will be prompted to enable the ISAPI extension. Click on yes.

At this point – the Mapguide 2009 web tier should be installed and running. Try it out by starting up a browser and hitting http://localhost/mapguide2009/mapagent/index.html. Next you can access maps using http://localhost/mapguide2009/mapviewerdwf or mapviewerajax.

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