Despite the fact that LOCK (docs) is a foundational part of InterSystems IRIS, responsible for concurrency, there is not a lot of discussion on the Developer Community about it. Which is understandable, considering it's stable and fairly low-level command. In this article, I will show a simple example of how to use locks with interoperability.

Hi!
We are deploying the iris image in a Kubernetes environment and the cluster state is "Hung" , looking the alerts endpoint we get 2 alerts:

[
  {
     "time":"2026-03-24T13:45:44.548Z",
     "severity":"2",
     "message":"System appears to have failed over from node a69a9f137593"
  },
  {
     "time":"2026-03-24T13:46:30.274Z",
     "severity":"2",
     "message":"Error: <PROTECT>KillAlive+1^%SYS.CDIRECT in SERVERS"
  }
]
Any idea / help where those are comming from and how to address them?

Hi Community,

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Introduction — The Problem with AI Streaming in ObjectScript

Today, I would like to introduce a problem I encountered and the solution I found when integrating AI APIs into an ObjectScript application. My initial tests were successful, yet somewhat frustrating.

The HTTP call worked; the request was properly sent to my LLM APIs. But then, silence... a long wait. Eventually, the entire response arrived as a single block.

Technically, it worked, but the user experience was disappointing compared to a ChatGPT session.

Modern models are designed to stream their output token by

Hi Communtiy,
I am a begineer who is working and trying to understand Intersystems. I am developing an Ensemble interface which receives a XML message and converts it into HL7 format without using enslib.HL7 classes. 
Requirement

1. My file consists of patient details which needs to be updated in a sql table whenever the same patient arrives. We need to check if the patient exists and convert it into a pId segment.
2.

SetUp:

I have created the following Task to kick off a Ens.BusinessService to execute a SQL query and process the results

Class OSU.Workday.TerminationsTask Extends %SYS.Task.Definition
{

Parameter TaskName As STRING = "OSU - Workday Termination Update";

Method OnTask() As %Status
{
    #Dim sc as %Status
    #Dim ex as %Exception.AbstractException
    
    set sc = $$$OK

    try{
        // create the service
        #Dim tService As OSU.DataSource.Workday.TermService
        Set tServiceConfigName = "OSU.DataSource.Workday.

Hello, I am working with @Alberto Fuentes https://openexchange.intersystems.com/package/workshop-iris-oauth2.

I wonder how do I get a token to send to the resserver?

I tried calling "token_endpoint" : "https://webserver/authserver/oauth2/token"

The response was "error":"invalid_request","error_description":"Unknown grant_type"

I wonder what needs to be in the request body? Is it a GET or POST?

As you all probably know, Health Connect / IRIS for Health natively supports DICOM messaging, and many of you will have used it daily. Well, I recently discovered a rather insidious little issue that our beloved @Alberto Fuentes gave me the solution.

We (I) will call this phenomenon the Creosote effect (those of you who know Monty Python will understand the reference, for the rest you can see the sketch here )

Mr.

I created a table profile dashboard on Power BI, but I wonder if is possible to do it in Iris by creating a class.

HealthShare Clinical Viewer 2022.2.2 Build: 1000 Adhoc: 23127 [HealthShare Modules: Core:24.0 + Clinical Viewer:24.0] - IRIS for UNIX (Red Hat Enterprise Linux 8 for x86-64) 2022.1 (Build 209_0_23127U) Mon Feb 12 2024 18:21:53 EST [Core:24.0|Clinical Viewer:24.0]

Hi Community,

Preparing for InterSystems Certification examsrequires more than reading documentation. It calls for focused practice aligned with real exam objectives.If you are planning to validate your expertise in HL7, SQL, System Administration, or Development, structured preparation can make a significant difference.

🧑‍🏫 Exam preparation platform

Hello to all the esteemed members of the InterSystems developer community in Spanish!

Although I often consult the developer community and have occasionally left a question here, this will be my first article, and what better occasion to do so than by participating in the 3rd technical article contest.

The topic I will cover in this article is the different tools that InterSystems IRIS provides us to optimize both the databases and the queries we run, as well as the new types of storage and data.

The problem

How many times have we migrated an IRIS Instance to another machine, maybe even another version, and after a few days realized we forgot that one SSL Configuration critical for a Business Operations to work? Or maybe a credential, or a lonely class in a package by itself?

The solution

The simple solution is to make a checklist¹. A checklist of the entities we have to move. But simple checklists on Word documents are often forgotten, or just ignored.

I have a json object coming in on a service with a field that has "NaN" as its value.

"ReferralInOutOfNetworkCd": "NaN",

In my DTL, I do a straight copy. yet what goes outbound is NaN, without being wrapped in double quotes

"consulting_provider_network_ordering_rd":NaN,

Has anyone experience this?  If so, did you find a way to fix or work around it?

Hi Community,

We're super excited to share that we launched another free, interactive tutorial designed to give you a little taste of InterSystems Data Studio.

🧑‍🏫 Introduction to InterSystems Data Studio 🧑‍💻

Hi Community,

Out of almost 200 applications, 26 selected teams will begin a 3-month fully virtual journey at Caelestinus. The cohort brings together pre-seed to seed stage startups from across the globe, spanning the United States, South America, Europe, South Korea, and Singapore.  

During the program, teams will enhance their solutions by building in interoperability, gaining an understanding of key digital health standards, and transforming them using InterSystems IRIS for Health and FHIR Server with the help of InterSystems experts.

We're pleased to invite everyone to watch the Caelestinus 2026 Kickoff Event streaming, where you can discover which teams were selected and learn about their innovative ideas.

Please watch the streaming via www.caelestinus.tech starting at 9 AM ET / 2 PM CET on March 25th 2026.

You can also watch the recording of the opening event here.

 Hi everyone,

I’m currently working with InterSystems IRIS and handling large datasets where some queries are starting to take longer than expected.

So far, I’ve tried basic indexing and reviewing query structures, which helped a bit, but I still feel there is room for improvement. My goal is to reduce response time, especially for frequently used queries in a production environment.

Hello Community!

We're pleased to invite you to the upcoming webinar in Hebrew:

👉Getting Started with OAuth 2.0 on InterSystems 👈

📅 Date & time: March 25th, 3:00 PM IDT

Is it possible to run a test case by classname instead of loading it from a directory?

I need to skip any directory loading completely since the directory with the source code does not exist.

While reviewing our Orphan messages, we noticed that there are some Orphans that look like they are the start of an HL7 message.

MSH|^~\&

Since this does not link to any Message Header, and most of the information in EnsLib_HL7.Message is NULL, is there a way to track down what Object maybe creating these so we can nip it in the bud.

Only way that I know of is to go through each of our Schema's and make both the MSH and Encoding Characters optional.