I have a class with a projection that creates some persistent classes (chunks) and a non-persistent "Daemon" class that I want to have running in the background, doing some processing. The daemon needs to look at the "chunk" classes, and I want it to be simple to start the daemon -- I am currently calling the daemon's start method at the end of the CreateProjection method. When I do this, I get a <CLASS DOES NOT EXIST> error from the daemon when it tries to query against one of the chunk tables. But, if I add a "HANG 5" at the beginning of the daemon start method, this runs fine.

Hi everyone! 

We’re currently determining the passing score for this exam and expect to publish it in late March or early April. Pass / fail notification emails for beta testers will also be sent out around that time!

For candidates interested in taking the SQL Professional exam at Ready 2026, please see the preparation materials and exam topics below.

INTRO

Barricade is a tool developed by ICCA Ops to streamline and scale support for FHIR-to-OMOP transformations for InterSystems OMOP. Our clients will be using InterSystems OMOP to transform FHIR data to this OMOP structure. As a managed service, our job is to troubleshoot any issues that come with the transformation process. Barricade is the ideal tool to aid us in this process for a variety of reasons. First, effective support demands knowledge across FHIR standards, the OHDSI OMOP model, and InterSystems-specific operational workflows—all highly specialized areas.

• Using InterSystems Embedded Analytics – Virtual July 14-18, 2025
  
  • Embed analytics capabilities in applications and create the supporting business intelligence cubes.
  • This 5-day course teaches developers and business intelligence users how to embed real-time analytics capabilities in their applications using InterSystems IRIS® Business Intelligence.

Hi,

I'm trying to install NodeJs (javascript runtime environment) in IRIS container so I can execute JS files?
It was easy to install it outside the container but I got the attached error when trying in the container:  

Thanks

Hi everyone,

I'm preparing to move to a new PC soon and I'm trying to migrate the server connections I use in IRIS Studio to the new environment.

I’ve followed without success an old procedure I've found on a post on the community that involves exporting the registry key from:

HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Intersystems\Cache\Servers

But I’ve realized that this only includes the entries from the Server Manager and not the actual server connections used within IRIS Studio and shown within the "Server Connections" menu.

InterSystems IRIS has quite a few different kinds properties. Let’s put them in order so that they make better sense.

First of all, I would divide them into categories:

• Atomic or simple properties (all those %String, %Integer, %Data and other system or user datatypes)
• References to stored objects
• Built-in objects
• Streams (both binary and character)
• Collections (which are divided into arrays and lists)
• Relationships (one-many and parent-children)

Some of these kinds of properties are quite straightforward. For example, atomic properties:

Property Name As %Name;
Property DoB As %Date
Property Age As %Integer

Mirror Member

Hi ISC Experts,

I'm in the process of setting up InterSystems IRIS for HealthShare with database mirroring, and I’d appreciate some guidance around how to handle an existing ODBC connection in this new setup.

Scenario:

• We currently have a system running IRIS for HealthShare that external systems connect to via ODBC (using a standard connection string with hostname and port).
• We're now configuring mirroring on this system — it will become one of the mirror members (Primary/Backup).

How do you iterate over the array of namespaces returned in the result byref from the call below?

DO ##class(%SYS.Namespace).ListAll(.result)

Running "zw result" displays the namespaces (as individual subscripts in result) in the Terminal but I want to be able to programmatically iterate through each namespace name. 

The documentation for ListAll() mentions here that result will be a local array name passed by reference. Is there a way to turn it into a dynamic array?

Hi Guys,

below is a running a URL in a browser to connect and get live advertising packets data from Cassia AC server which keeps the connect live and keep going and population data. 

So now I'm doing the same in the below code but the issue I'm not getting anything and it gets stuck at Get(HttpURL) line because it hanging on that live connection I guess and not outputting, so how can I get the HTTP request to exit and get me only a snapshot of that data, maybe something like 20 sec worth of data?  

 S BleMac="DC:0D:30:9E:3A:EC",GatewayMac="CC:1B:E0:E2:56:18"
S Token=##class(SX3.Task.

Hey Community!

We're happy to share the next video in the "Code to Care" series on our InterSystems Developers YouTube:

⏯  Chaining LLMs for Better Results using Agentic AI

My intention is to show how simple it is to generate a lookup table taking into account the information received in our HL7 messaging. The HL7 message lookup table provided by IRIS is certainly sufficient for most of the searches we want to perform, but we always have that special field in our HIS, LIS, RIS, etc. that we'd like to search by. But that's in a segment outside of that lookup table. That field forces us to generate a specific search using the expanded search criteria. We'll likely have many messages, and we'll also have to filter by date and time so we don't timeout.

Do you have at least two years' experience developing with InterSystems IRIS® data platform and basic knowledge of InterSystems ObjectScript?

👨‍🎓Validate your expertise with the new InterSystems IRIS Development Professional certification exam, our first professional-level exam!

Hi Community,

Enjoy the new video in a series of videos created by our Project Managers to highlight some of the interesting features of the new 2025.1 release:

⏯ RAG with built-in Vector Search in InterSystems IRIS 2025.1

Description

This is a template for a Flask application that can be deployed in IRIS as an native Web Application.

Installation

1. Clone the repository
2. Create a virtual environment
3. Install the requirements
4. Run the docker-compose file

git clone
cd iris-flask-template
python3 -m venv .venv
source .venv/bin/activate
pip install -r requirements.txt
docker-compose up

Usage

The base URL is http://localhost:53795/flask/.

Endpoints

• /iris - Returns a JSON object with the top 10 classes present in the IRISAPP namespace.
• /interop - A ping endpoint to test the interoperability framework of IRIS.

Having been inspired with Shared code execution speed question/discussion, I dare to ask another one which is annoying me and my colleagues for several weeks.

We have a routine called Lib that comprises 200 $$-functions of 1500 code lines total. It was noticed that after calling _any_ function of another rather big routine (1900 functions, 32000 lines) the next call of $$someFunction^Lib(x) is getting 10-20% slower than previous call of the same function.

I am having issues trying to send SOAP requests to a Cloud Based AWS Application that lives outside of our network. 

It is using a Basic Authentication, Key, Certificate Authority and Whitelist for Security. 

If I attempt the connection using wget from the command line I am able to connect,

:>wget --bind-address=10.95.129.245 --server-response https://xxxxxxxxxx/xxxxxxx/services/Mirth
--2025-06-06 15:54:51--  https://xxxxxxx/xxxxxxxx/services/Mirth
wget: /ensemble/.netrc:16: unknown token xxxxxxx
wget: /ensemble/.netrc:16: unknown token xxxxxxxx
Resolving xxxxxxx.com (xxxxxxx). 34.233.89.

Hello, dear members of our developer community!

In today's article, we're going to take a look at one of the latest remote monitoring features that have been added to the product for our IRIS instances. I'm talking about OpenTelemetry support.

1. A Motivating Example

Embedded Python has been around for a while. You probably followed the tutorials and learned about it. However, if you've tried to combine Python and ObjectScript in real development work, you probably ran into situations where you get an error message like this:

USER>Do ##class(MyClass).SomeMethod()

ERROR #5002: ObjectScript error: <PYTHON EXCEPTION> *<class 'ZeroDivisionError'>: division by zero

It's a long string for limited information.

Hi.

I want to save and compile a class in VS Code, but I get the error:

Failed to save 'Utils.cls': Unable to write file 'isfs://mip:mz/API/Utils.cls?project=MZ' (Unknown (FileSystemError): Unknown Error).

Any ideas what is wrong?

Regards,
Matjaž

We are glad to announce that DBeaver has supported InterSystems IRIS out-of-the-box since version 7.2.4. You don't need to configure it manually anymore, just find the IRIS icon in the Connections list. 

Hey everyone,

I'm diving deeper into Caché ObjectScript and would love to open a discussion around the most useful tips, tricks, and best practices you’ve learned or discovered while working with it.

Whether you're an experienced developer or just getting started, ObjectScript has its own set of quirks and powerful features—some well-documented, others hidden gems. I’m looking to compile a helpful set of ideas from the community.

If you're migrating from Oracle to InterSystems IRIS—like many of my customers—you may run into Oracle-specific SQL patterns that need translation.

Take this example:

SELECT (TO_DATE('2023-05-12','YYYY-MM-DD') - LEVEL + 1) AS gap_date
FROM dual
CONNECT BY LEVEL <= (TO_DATE('2023-05-12','YYYY-MM-DD') - TO_DATE('2023-05-02','YYYY-MM-DD') + 1);

In Oracle:

• LEVEL is a pseudo-column used in hierarchical queries (CONNECT BY). It starts at 1 and increments by 1.
• CONNECT BY LEVEL <= (...)

Hello Community

I have previously experimented with embedded Python in IRIS; however, I have not yet had the opportunity to implement IRIS using native Python. In this article, I aim to outline the steps I took to begin learning and implementing IRIS within the Python source. I would also like thank to @Guillaume Rongier and @LuisAngel.PérezRamos for their help in resolving the issues I encountered during my recent PIP installation of IRIS in Python, which ultimately enabled it to function properly.

Let's begin to write IRIS in python.

InterSystems has released new point updates to resolve a defect affecting the most recent prior versions of 2025.1.0, 2024.1.4, 2023.1.6, and 2022.1.

Hello everyone, let me introduce, one of my latest projects. It is a DataSource plugin for Grafana, which can connect directly to InterSystems IRIS and gather any data (in the future). 

Hello,
I have created this script that does lot of writes to a single global. DB write performance is much slower than expected (compared to another similar systems).

set rec = "..." //fill it with something
set time = $piece($horolog,",",2)
while(($piece($horolog,",",2)-time) < 30) //30 seconds
    set ^A($System.Util.CreateGUID()) = rec
}

I have notified the following : 

• CPU usage does not reach 100% on a single core (eg: 25% of total CPU usage should be seen on a 4 cores system).

I am having a hard time trying to figure out the following...

Within a DTC, I was able to take the a EnsLib.HL7.Message source and using

set a= $System.Encryption.Base64Encode(source.RawContent)
set encodedMessage=$Get(a)

to take the HL7 message encode it and add it to the Data Class as a string to be sent to an Operation to be sent out as a SOAP Request. 

However to make it more universal I tried doing this within a copy of EnsLib.HL7.SOAPOperation

Method SendMessage(pMsgOut As EnsLib.HL7.Message, Output pMsgIn As EnsLib.

Hi  Guys,

I'm looking for a Zen component that allow me to populate a list of items and the ability to multiselect, similar to checklist?

I've thought of using MultiSelectSet component but don't know how can I populate it like to a query or resultset?

a short sample code would be helpful.

Thanks

IRIS and Ensemble are designed to act as an ESB/EAI. This mean they are build to process lots of small messages.

But some times, in real life we have to use them as ETL. The down side is not that they can't do so, but it can take a long time to process millions of row at once.

To improve performance, I have created a new SQLOutboundAdaptor who only works with JDBC.

BatchSqlOutboundAdapter

Extend EnsLib.SQL.OutboundAdapter to add batch batch and fetch support on JDBC connection.

Benchmark

Benchmarks released on Postgres 11.2 with 1 000 000 rows fetched and 100 000 rows inserted on 2 columns.