There are far more efficient ways to do that.

1. Move tables you want shared into a separate Namespace with separate Code/Data databases.
2. Map your data and code into original namespace.
3. Verify that it all works as expected. So far it should work as before.
4. Create a mirroring configuration.
5. Add 2 created databases to the mirror configuration.
6. Add second server as a DR mirror.
7. Move databases to a DR mirror and mount them there.
8. (Optional) Create a namespace with 2 mirrored databases.
9. Add desired mappings on a second system.

Docs.

Do you have IMAP available?

If not you can use DavMail to convert exchange to POP3 and that's easily consumable from InterSystems IRIS.

Yes.

Check Export/Import method of Security.Roles class.

JVM is probably out of memory. Try this.

1. Define Excel server at SMP > System > Configuration > Zen Report Excel Servers > Zen Report Excel Server, let's say at port 44444

2. Start it. Copy OS command. Should be something like:

C:\InterSystems\Ensemble\lib\ExcelExporter\runserver.bat -port 44444 -numthreads 5 -loglevel 3 -maxlogfilesize 32000 -logrotationcount 100 -numpingthreads 5 -pingport 44445 2>&1

3. Stop Excel server

4. Execute the command from 2 in OS terminal, but set JVM heap size. See how.

5. In your ZEN report add:

Parameter EXCELSERVER = 44444;

to use your excel server.

6. Recompile report and try to run it again.

It's better to use file streams.

Set stream = ##class(%Stream.FileCharacter).%New()
Set sc = stream.LinkToFile("E:\test\file.txt")
Do stream.Write("Some Text")
Set sc = stream.%Save()

To get queues list call:

Call EnsPortal.Queues_EnumerateQueues()

Or

SELECT *
FROM EnsPortal.Queues_EnumerateQueues()

You need to add POST route:

Class Rest.UsuarioSvc Extends %CSP.REST
{

XData UrlMap [ XMLNamespace = "http://www.intersystems.com/urlmap" ]
{
<Routes>
<Route Url="/Oi/:xpto" Method="GET" Call="Oi"/>
<Route Url="/Oi/:xpto" Method="POST" Call="Oi"/>
</Routes>
}

ClassMethod Oi(xpto As %String) As %Status
{
    Set tSC = $$$OK
    
    If 'tSC Quit tSC       
    Set tProxy = ##class(%ZEN.proxyObject).%New()
    Set tProxy.Oi = xpto _ "1234"
    
    Set %response.ContentType = "application/json"
    set %response.Status = 200
    Do tProxy.%ToJSON()
    
    Quit tSC
}

}

I'd try to avoid giving user an ability to enter arbitrary code.

1. Offer user a list of predefined operations ( >,<,=,<> or Equals,More, Not Equals,...)

2. Get input from user.

3. Check that input is actually one option on a list and not something else. 

4. Perform the check using IF, for example.

 ClassMethod main(a As %Integer, b As %Integer, operation As %String(VALUELIST="Equals,Not Equals") = "Equals") As %Boolean
{
  set operationList = $lb("Equals", "Not Equals")
  throw:'$lf(operationList, operation) ##class(%Exception.General).%New("<INVALID OPERATION>")
 
  if operation = "Equals" {
    set result = (a = b)
  } elseif operation = "Not Equals" {
    set result = (a '= b)
  } else {
    throw ##class(%Exception.General).%New("<INVALID OPERATION>")
  }
 
  quit result
}

I think I encountered something similar. I added to target class:

Class Proxy.Class Extends (%Persistent, %XML.Adaptor) {

Parameter XMLIGNOREINVALIDTAG =1;

Parameter XMLIGNOREINVALIDATTRIBUTE= 1;
...

}

And it helped.

To create one property call:

http://127.0.0.1:52773/api/docdb/v1/NamespaceName/db/DBName/propertyName?type=propertyType&path=propertyPath&unique=propertyUnique

You'll need one call per property.

For your property Ergebniszuf, url would be:

http://127.0.0.1:52773/api/docdb/v1/NamespaceName/db/DBName/Ergebniszuf?type=%String&path=Ergebniszuf&unique=0

Just add empty string as is:

ClassMethod Test(val = "")
{
 Set t = ##class(Forerun.Test).%New()
 Do t.ReviewedBy.Insert(val)
 $$$THROWONERROR(tSC, t.%Save())
 Set id = t.%Id()
 Set user = "me"
 &SQL(UPDATE Test.Test
            SET ReviewedBy = ReviewedBy||$ListBuild(:user)
            WHERE ID=:id
            )
 If SQLCODE<0 Write "Problem",! Quit
}

Usually response does contain status information in StatusCode and StatusLine properties.

You need to change this line

Set httpResponse = httpRequest.Post("/sample/", 2)

to

#dim sc As %Status = $$$OK
Set sc = httpRequest.Post("/sample/", 2)
Write $System.Status.GetErrorText(sc)

As Post method returns status.

After debugging you can use

write $$$ISERR(sc)

macro to check if result of some operation is an error.

Check your current server locale.

it causes error messages as something in the class is not correct,

What error messages?

Also try calling

zwrite %objlasterror

it may contain additional information.

You can use methods of %Activate.TLEnumerator class to load libraries programmatically.

Redefine HTTP adapter like this:

Class Production.Adapter.HTTPOutboundAdapter Extends EnsLib.HTTP.OutboundAdapter
{

/// Send a POST to the configured Server, Port and URL, sending form data to the named form variables.
Method Post(Output pHttpResponse As %Net.HttpResponse, pFormVarNames As %String, pData...) As %Status
{

    quit ..SendFormDataArray(.pHttpResponse, "POST", ..GetRequest(), .pFormVarNames, .pData)
}

ClassMethod GetRequest() As %Net.HttpRequest
{
    set request = ##class(%Net.HttpRequest).%New()
    set request.ContentType = "application/json"
    quit request
}

}

And use it instead of default adapter.

Try this:

1. Write stream to string

2. Use $zcvt on string $zcvt(string,"O","UTF8")

3. Send this stream to XSLT

Cache private web server is configured and available by default.

If System Management Portal opens then private server works.

Here's a good tutorial on developing Angular applications on Caché.

Please check the output:

set result = ##Class(%File).Delete(fileNamewithPath, .status)
zw result
zw status

There are several ways to do that. Let's say you have a persistent property

Property Problem As %String;

That you don't want anyone to see.

1. Make it private:

Property Problem As %String [ Private ];

It would not be displayed altogether

2. Add accessor methods:

Property Problem As %String;

Method ProblemGet() As %String [ ServerOnly = 1 ]
{
    Quit "****"
}

Method ProblemRealGet()
{
    Quit i%Problem2
}

Method ProblemSet(Arg As %String) As %Status [ ServerOnly = 1 ]
{
    Set i%Problem2 = Arg
    Quit $$$OK
}

This way default callers would get **** and only your app code can access the real value.

3. Do not project property to XML

Property Problem As %String(XMLPROJECTION = "none");

As ensemble message viewer is XML-based it would hide property from it.

4. Create a special datatype. For example MyApp.Datatype.Password datatype returns **** as Display and ODBC values:

Class MyApp.Datatype.Password Extends %String
{

ClassMethod LogicalToDisplay(%val As %String) As %String [ Internal ]
{
    q $case(%val,"":"",:"*****")
}

ClassMethod LogicalToOdbc(%val As %String) As %String [ Internal ]
{
    q $case(%val,"":"",:"*****")
}

}

To use it:

Property Problem As MyApp.Datatypes.Password;

5. Extract the property into a separate class and reference the object of that class.

These approaches could be combined.