using  intersystemsdc/iris-ml-community:latest I failed with

Error: Invalid Community Edition license, may have exceeded core limit.
Shutting down the system : $zu(56,2)= 0Starting IRIS

What is the actual valid version with ML ??

USER>do $System.Python.Shell()
 
ERROR #5002: ObjectScript-Error: <OBJECT DISPATCH>Shell+16^%SYS.Python.1 
*Failed to Load Python: Check documentation and messages.log, 
Check CPF parameters:[PythonRuntimeLibrary,PythonRuntimeLibraryVersion], 
Check sys.path setup in: $INSTANCE/lib/python/iris_site.py

02/03/25-18:27:39:497 (13156) 1 [Generic.Event] CPF settings (PythonRuntimeLibraryVersion) do not specify python correctly - Python can not be loaded
02/03/25-18:27:39:498 (13156) 1 [Generic.

Import from DC-PT, @Edilson Eberle Carvalho

We have some *.mac routines and we need to preserve their source,
as these routines have intellectual authorship and can only be used per session
with the right to use (they cannot be viewed or edited).
The question: how to keep only the routine object in the IRIS namespace,
without interfering with its execution?

in which Community Docker package can I find 
HS.Gateway.Access.RemoteOperations.cls 

While creating my latest examples for the JavaContest I faced the need
to communicate with my code from a program in IRIS to my Java code.

Communication with |CPIPE| worked as READ or WRITE  but not both?
In the Documentation Named PIPEs are explained rather shortly.
"Once open, a pipe acts like an ordinary device."  Not so precise.
I failed to achieve my expected READ/WRITE  as TCP would offer. 

Has anyone a working example to demonstrate it? 
Any suggestion is welcome.

I found a workaround for my actual case.
Though I'm not so happy with it.

MIRROR is the best solution for almost immediate replications to a Failover Server.
The related mechanics are based on Global Journaling.

Globals hold Data and Classes and Routines and more ...
If Mirroring is in place all is in sync. With minimum delays
This is of course  rather useful for code changes in Classes, Routines, ....

To what extent is Embedded Python covered by Mirroring?
Or:
What is required to Synchronize EmbeddedPython like Mirroring. 

With ECP we have the option to have a collection of Frontend instances
All Frontend servers typically have a common Master in the background
Concentrating data on the Master server is the primary goal.

As a side effect, this applies also to Classes, Routines, .. anything stored in Globals.
This is probably not the most efficient setup. But rather common anyhow.

Is embedded Python code also stored in Globals?

What is the recommended solution for a similar installation?

For my Embedded Python ONLY demo package I need some user input.
Similar to ObjectScript

read "say somthing",reply

I use the Python equivalent

reply = input("say something")

And this works excellent without problems  from Terminal or Doker console

BAD SURPRISE: 
withWebTermnial ObjectSscript works fine, but embedded Python fails badly.

I do not care about line terminators without <CR>
but it is just impossible to receive any input.

This is no improvement. The content is missing !!!!

QUESTION to the experts.

The SQL editor in the contest environment promises these features
InterSystems SQL Reference.  

But this is the reality:

I see no chance to have a different user.
Or did I miss something?
Or is this just fiction from ChatGPT ?

looking into tenants  I see this:

But on the main page, I have 2 deployments that I can work with  !! 

What is going on ??

I have  an accepted tenant and want to share my deployment.

how is this possible?

Thanks to @Dmitry Maslennikov I have access to a Container for Caché.
It is based on Centos.
Is there anywhere a container based on Ubuntu available?

There is an example on JSON XDATA.
But it only describes Name mapping.

Is it possible to define somehow also a structural mapping
e..g an Array of Arrays Structure: without property names

[
     [12,33], [88,44]
] 

During my last migration to IRIS I met this Compatibility parameter

• NullSubscripts    true

0 - Throw error when referencing a null subscript.
1 - Null subscript references do not throw an error.

The consequences are shocking. This was allowed:

USER>zw ^rcc
^rcc=0
^rcc("")="***"
^rcc("",1)="*,1"
^rcc(1,"")="1,*"
^rcc(1,2)="1,2"
^rcc(1,2,"")="1,2,*"

But SMP had no idea what is going on. 

And after switching off that flag this was still partialy visible, but read-only

USER>zw ^rcc
^rcc=0
^rcc(1,"")="1,*"
^rcc(1,2)="1,2"
^rcc(1,2,"")="1,2,*"

I just don't understand.

I found a package on OEX for a Sharding Demo
If Sharding is NOT included in the Community License
I can not use the Community Distribution but require a different one.
And have to add ZPM manually. 

When I run my IRIS in a Docker Container I know the host an know the mapped ports
so access is no problem.

BUT: is it possible from my IRIS
- inside a Container
- 'inside' Docker
to find the actual IP address of the Host?
This may sound strange, but for error tracking, it could be quite important.

To prepare a migration to IRIS I use Docker images.
The (aged) application is built around Caché Terminal
And on Windows,  IRIS uses the same ctelnetd.exe as Caché.

In my Docker installation, Telnet Settings are just grayed out in SMP.
and my Terminal can't 'connect.
Port mapping is OK and verified with TCP

Working from the console in Docker with the whole set of ESC and
screen formatting is not acceptable.
We tried WebTerminal but there is just no Partition behind as in Terminal.

How can I switch on Telnet support in the Docker image?
 

During a migration from a rather old Caché Version (2016.1) to IRIS
I met the problem to migrate Streams.
The difference in the storage Global is minimal
It's not a big effort to do it manually for a few streams.
But for some thousand streams I hope there is a tool already available.
But where?

To most of us it's almost dogmatic that $H can't be negative!

This is correct concerning the COS Special Variable $HOROLOG.
No doubt. It's the presentation of the actual date & time.
http://docs.intersystems.com/latest/csp/docbook/DocBook.UI.Page.cls?KEY…

For dates before 1841 it's suggested to use Julian date before 1841.
Good for calculations.
But what about values in $H_format ?
Conversion functions $ZD(), $ZDT(), $ZDH(), $ZDTH() and  
for SQL  $system.SQL.TOCHAR() and $system.SQL.TODATE()
take  care of the conversion to human readable date. You know this.

Those of you that worked already with ECP might know that it operates not only across
operating systems, processor technologies (big-little-endian), but also -with limits- across versions in C/E.
This cross-version feature also includes IRIS (verified for 2020.1)  and C/E (2018.3)

For quite some time I am bored by slowly starting Docke Demos from OEX.
I type

docker-compose up - d

and after a few seconds

docker-compose logs

And I just see ISC Agent was started and is hanging around
No IRIS instance is up yet.

I just met a personal challenge translating my article to French.
Tough I had to learn it at school and could read and understand
famous literature (Sartre, Molière, Mauriac, Proust, Saint-Exupéry, Anouilh, ...) 
I missed the specific terms used with ISC technology.
Thanks to @Lorenzo Scalese my errors were corrected.
But no dictionary was able to answer. 
Especially as English is gender-neutral the individual gender in other languages is just undefined.
QUESTION:

It sounds strange though it's embarrassing.

I have a class with ClassMethods written in ISOS and Embedded Python.

The ClassMethods written in ISOS start in the Background as usual. No problems

But my 

ClassMethod setPy() [ Language = python ]
{
import iris, datetime, time
- - -

Just fails the JOB command with (even 15 sec) timeout and $ZC=0
This is not funny
My actual workaround:
I created a ClassMethod in ISOS, that does an elegant JobStart
and this ClassMethod only runs the Embedded Python ClassMethod.

II try to explore the new SQL LOAD DATA  feature in SQL comparing it to SQL INSERT

I'm stuck at this point:  INSERT INTO <table> (columns...) VALUES  (.....)
allows having not just simple column references but also ALL Standard SQL FUNCTIONS (at least)
example:  

INSERT INTO Test (ShortName,DOB) VALUES  (SUBSTRING(Name,1,4),TO_DATE(displayDate,'MM-DD_YYY'))

This works perfectly. 
BUT the same VALUE clause applied to LOAD DATA  fails in various ways:

I'm almost running out of disk space so I want to move 1 DB to a different hard drive.  
It's a rather simple but lengthy action during a shutdown of IRIS.  
But is this somehow possible under runtime in a stand-alone installation?  
I'm looking for kind of a "local drive failover"  
note: Mirror or Shadow is not an option.  

After running an extensive block of daily statistics my IRISTEMP has expanded dramatically.   
But FreeSpace shows 97% unused and FREE space.   
How can I shrink IRISTEMP in runtime without shutdown and manual intervention
(which was the traditional approach)

In Cache for Windows (x86-64) 2018.1.3 (Build 414U) I found something very useful

ENSTEMP was addressed already some time ago; 
Article: Preventing Globals From Getting Journaled (Continued from How do I Minimize My Journals)

and is also in public documentation
Where InterSystems IRIS Stores Temporary Production Data

Though I'd like to understand if this is just naming a non-journaled DB
or are there also typical features of CACHETEMP / IRISTEMP related to it:

• automatic clean-up at system startup 
• keeping Global Buffers in memory as long as possible
• late writing to the storage file 

In other words is it a 2nd, 3rd, .. fully feature blown IRISTEMP  ?  

In a single server environment, it is rather easy to create a transaction consistent backup.

Simplified:
You find (or force a specific point in time with no open transactions.
Freeze your server, take a snapshot and you are done.

I'm facing a specific sort problem.
There are several thousands of articles sold all over. 
Users expect to get a description in local language sorted by their specific collation.