Citrix, AWS, and Omnis 6

Ken Dimson ken at
Wed Dec 3 20:31:57 EST 2014

We are not using Citrix but do use Windows Remote Desktop services for our application.

On an RDP server we install one Omnis Studio RT and setup app folders for each individual user. In the startup of the RT we have a startup library that gets the RDP username and the path to the user app folders and then launches the first library in our application from that location.

This makes it easier to do updates to the RT as there is only one copy and given each user has his/her own set of libraries we can also update same without worrying about a library being opened by another user.

As said this environment is not the same as your proposed one so above comments may not be applicable.


Ken Dimson
ken at

> On Dec 2, 2014, at 7:28 PM, Bastiaan Olij <bastiaan at> wrote:
> Hey Mark,
> Besides the obvious discussions played out in recent years about giving
> users their own library citrix seems to work pretty stable. This is
> where installing Omnis according to UAC rules does work into your
> advantage as each user has their own copy of any writeable files.
> Do note that in doing so each user has their own omnis.cfg and serial
> information so each user will authenticate with the license server. That
> should not be an issue if your serial number is a multi user serial
> number and as in theory the same hardware ID is used the license server
> will probably count it as a single activation anyway. The only issue
> happens if the hardware ID isn't static which could be the case if
> you're load balancing between multiple Citrix servers. 
> The footnote that must be given though seeing you are deploying on AWS,
> we have two clients of ours who both are using Hyper-V virtualisation of
> their servers and run a Citrix (or MS equivalent) installation on top of
> that who both have reported performance issues. We are still at a loss
> to pinpoint the cause and what in, and indeed if, Omnis is causing the
> issues. It does however seem that the double virtualisation is at the
> heart of the problem as the problems melt away as soon as you install
> Citrix on dedicated hardware.
> I have no idea how Hyper-V stacks up or is comparable with AWS (not to
> mention that I hold the people behind AWS in high regard, they seem to
> have configured those systems amazingly well) but it is worth testing
> performance of your application before you commit.
> Cheers,
> Bas
> On 3/12/2014 6:40 am, Mark Phillips wrote:
>> We have been asked to assist in a 20 seat deployment of an Omnis 6.0 app to a managed environment using Citrix on AWS. Backend is MS SQL Server for legacy reasons.
>> It has been ten years since I considered this deployment configuration. I would be most grateful for any advice you all can offer.
>> - Mark Phillips
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