I was reviewing the documentation and I think that the only option available is to split your base64 by the MAXSTRING limit and append all the pieces that you get using SetValueAt defining the action as append:

method SetValueAt(pValue As %String, 
                  pPropertyPath As %String, 
                  pAction As %String = "set", 
                  pKey As %String = "") as %Status

It could be something like:

Do stream.Rewind()
While (stream.AtEnd = 0) {
    // Not sure about the len
    Set len = 3641144
    do target.SetValueAt(stream.Read(.len), "LetterAttachment(1).Base64EncodedFile(1)", "append")
}

Those are good questions, I guess that the idea to not integrate it into the common distribution is to keep it lighter as possible.

You can try the IRIS Community version for Docker:

https://containers.intersystems.com/contents?family=InterSystems%20IRIS%...

Maybe it's not well configured, check this documentation about the configuration:

https://docs.intersystems.com/irislatest/csp/docbook/DocBook.UI.Page.cls...

In summary, query this table to be sure about the model configuration:

INFORMATION_SCHEMA.ML_TRAINING_RUNS

Please, check your license to be sure that IntegratedML is included.

Congratulations to all the participants! JAVA is alive!

If your operative systems is Windows execute the following command to check the used ports:

netstat -aon

If it's Linux try with this one:

sudo lsof -i -P -n | grep LISTEN

These commands will show you a list of ports in use and the process what is listening on it.

Well, I think that you should try first a Learning Path, try this one:

https://learning.intersystems.com/course/view.php?id=2323

Could you be more specific about what point or step you don't understand?

To configure properly the IRIS metrics like queue alerts and so on you can check this configurations:

https://docs.intersystems.com/irislatest/csp/docbook/DocBook.UI.Page.cls?KEY=EMONITOR_alerts#EMONITOR_alerts_calibrate

Documentation is your friend!

https://docs.intersystems.com/irisforhealthlatest/csp/docbook/DocBook.UI.Page.cls?KEY=HXFHIR_server_install

Try this url for Docker containers:

https://containers.intersystems.com/contents

About the eval download, it's working for me.

Well, I've seen a couple of public tenders requesting Dynatrace for monitoring. I'll take a look at it  Does anyone experience on it?

You are welcome @Lorenzo Scalese ! Always a pleasure to be helpful.