#InterSystems IRIS for Health

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InterSystems IRIS for Health™ is the world’s first and only data platform engineered specifically for the rapid development of healthcare applications to manage the world’s most critical data. It includes powerful out-of-the-box features: transaction processing and analytics, an extensible healthcare data model, FHIR-based solution development, support for healthcare interoperability standards, and more. All enabling developers to realize value and build breakthrough applications, fast. Learn more.

Question Touggourt · May 5

Hi Guys,

I've the below code to build JSON and send it via httpRequest called from business Operation.

But I'm getting this error, which I'm guessing that the formulated JSON doesn't have the correct format, so I was looking to convert the JSONStream to JSON string and try to validate it so see where the JSON is broken, problem is that I'm expecting that there will thousands of records in this JSON so it will hard to go through it, so is there a way to track for error or why this JSON is failing to send    

Thanks

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Question Scott Roth · Apr 23

Was wondering if anyone had a Dynamic way to see if a Global is still being used by a Class File. 

We have been monitoring our Global Size recently, and I am trying to find problematic Class files that are not being cleaned up or used appropriately. I have come across some globals that do not seem to have a Class attached to them anymore, and instead of deleting globals 1 by 1, I was looking for a way that we could dynamically do this since the globals have data that is stale in them.

Thanks

Scott

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Question Glenn Elliott · May 6

I have a question around mapping between different datasets during the HL7 -> SDA3 -> FHIR transformation.

We have a FHIR server which uses the standard ISC HL7->SDA3->FHIR conversion when ingesting HL7 messages. There is the odd requirement to enrich FHIR data from the original HL7 message. due to site specific HL7. Our approach is to extend HS.Gateway.HL7.HL7ToSDA3 with a custom GetSDA method that includes the original HL7 Message ID via CustomPairs.

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Article Vachan C Rannore · Sep 15, 2025 2m read

Starting out with ObjectScript, it is really exciting, but it can also feel a little unusual if you're used to other languages. Many beginners trip over the same hurdles, so here are a few "gotchas" you'll want to watch out for. (Also few friendly tips to avoid them)


NAMING THINGS RANDOMLY

We have all been guilty of naming something Test1 or MyClass just to move on quickly. But once your project grows, these names become a nightmare. 

➡ Pick clear, consistent names from the start. Think of it as leaving breadcrumbs for your future self and your teammates.


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Article Beatrice Zorzoli · Sep 10, 2025 4m read

I joined InterSystems less than a year ago. Diving into ObjectScript and IRIS was exciting, but also full of small surprises that tripped me up at the beginning. In this article I collect the most common mistakes I, and many new colleagues, make, explain why they happen, and show concrete examples and practical fixes. My goal is to help other new developers save time and avoid the same bumps in the road.

1. Getting lost among system classes and where to start

The issue: ObjectScript/IRIS ships with many system classes and packages (%Library, %SYS, %Persistent, %SQL, etc.).

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InterSystems Official Bob Kuszewski · Apr 29

Below is an update to the IRIS release calendar for 2026 and an early look at the planned changes for 2027. The key takeaway for 2026 is that maintenance release numbering will differ slightly from prior years.

2026: IRIS 2026.1 maintenance release numbering

  • July 2026: first maintenance release for IRIS 2026.1 (planned version: 2026.1.4)
  • October 2026: next maintenance release (planned version: 2026.1.5)
  • February 2027: following maintenance release (planned version: 2026.1.6)

This numbering change prepares us for the expanded maintenance cadence planned for 2027.

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Article Ariel Glikman · Sep 16, 2025 14m read

One of the recommendations when deploying InterSystems Technologies for production is to set up High Availability. The recommended API Manager for these InterSystems Technologies is the InterSystems API Manager (IAM). IAM (essentially Kong Gateway) has multiple deployment topologies.

If you are looking for high availability you could use:

a) Kong Traditional Mode: Multiple Node Clusters

b) Hybrid Mode

c) DB-less Mode

Before we break them down let's first understand the out of the box deployment that is provided by InterSystems: Installing IAM Version 3.10.

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InterSystems Official Aya Heshmat · Mar 27, 2025 4m read

The Interoperability user interface now includes modernized user experiences for the DTL Editor and Production Configuration applications that are available for opt-in in all interoperability products. You can switch between the modernized and standard views. All other Interoperability screens remain in the Standard user interface. Please note that changes are limited to these two applications and we identify below the functionality that is currently available. 

To try out the new screens prior to upgrading, you can download the 2025.

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Article Tani Frankel · Apr 26 1m read

A very important feature for HL7 FHIR has been introduced with the release of v2026.1 - the support for SMART on FHIR v2 fine-grained granular Scopes.

This enables you to be much stricter and more accurate in the access you provide to the data in your FHIR repository.

Part of this new support is to refuse requests that don't match the scopes, but an even more interesting ability is to filter the results according to the provided scopes.

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Article Murray Oldfield · Aug 26, 2025 6m read

I am regularly contacted by customers about memory sizing when they get alerts that free memory is below a threshold, or they observe that free memory has dropped suddenly. Is there a problem? Will their application stop working because it has run out of memory for running system and application processes? Nearly always, the answer is no, there is nothing to worry about. But that simple answer is usually not enough. What's going on?

Consider the chart below. It is showing the output of the free metric in vmstat

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Announcement Olga Zavrazhnova · Apr 24

Hi Community, 

If you’re new to InterSystems, check out the InterSystems Developer Hub.

Start working with InterSystems technologies — install InterSystems IRIS, connect to it, run something real, or try products directly in a browser-based interactive environment (no setup required).

If you’re wondering where to begin, here’s what you’ll find there:

Developer Onboarding Guide — a structured walkthrough of what InterSystems IRIS is and how to set it up

Quickstarts — short, practical guides to get you from zero to a working setup:

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InterSystems Official Daniel Palevski · Mar 25

The 2026.1 release of InterSystems IRIS® data platform, InterSystems IRIS® for Health, and InterSystems Health Connect™ is now Generally Available (GA). This is an Extended Maintenance (EM) release.

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Article Kristina Lauer · Apr 23 2m read

Hi Community,

Take a look at these new videos in online learning, and get familiar with new features and interfaces in the latest release of InterSystems® products. All videos are also available in the Learning Services YouTube channel.

Plus, check out a video for new ObjectScript developers, and a guide for HealthShare® users upgrading their deployments.

Videos for the Latest Release of InterSystems Products

  • Goal: Learn about enhancements to the interoperability UI in version 2026.1 of InterSystems products.
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Article Ben Schlanger · Apr 22 27m read

Table Partitioning Demo

This demo walks you through the new Table Partitioning feature in IRIS SQL, explaining what it does and how it works along the way. We'll only use a few dozen rows to prove the concept, but obviously the capability is focused on datasets many orders of magnitude larger.

If you'd like a shorter, higher-level introduction to Table Partitioning, check out the online learning module Managing Tables with Partitioning in InterSystems IRIS

 

ℹ️ Table Partitioning is included in IRIS 2026.1 as an experimental feature

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Announcement KC Lu · Mar 16

Since our previous announcement, we have introduced several incremental improvements to the client‑side editing experience in VS Code. These updates focus on preserving developer‑authored formatting when synchronizing with the server.

What Changed

Client‑side *.cls files previously lost certain formatting details during compilation, including keyword casing (e.g., classmethod → ClassMethod), normalization of blank lines between class members, and removal of line breaks within parameter lists.

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Announcement Laurel James (GJS) · Apr 21

The George James Software team is looking forward to going to National Harbor for READY 2026!

As part of the conference, we'll be hosting our Deltanji Source Control User Group:

Date: Wednesday, April 29th 
Time: 8 - 9am (breakfast will be provided) 
Location: Azalea 1 
RSVP by emailing laurelj@georgejames.com

We'll be showing what will be included in the next release of Deltanji, version 8.2, as well as providing an opportunity for questions and discussion. We welcome both current and prospective users to join us.

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Question Ganesh Jagtap · Apr 17

Hi Team,

We are currently running InterSystems Caché 2018 on an IBM AIX server and would like to configure the Cache instance to start automatically when the server boots or is rebooted.

Could you please provide the recommended steps or any official scripts/guidelines to enable auto-start for the Cache instance (QA2018) on AIX?

Additionally, if there are any best practices or prerequisites (such as filesystem mount options, service dependencies, or startup order) that we should consider, please share those as well.

Thanks,
Ganesh

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Article Hiroshi Sato · Aug 28, 2025 1m read

InterSystems FAQ rubric

There is data, such as execution log data, that you do not want to return to its previous state even if a rollback occurs during a transaction. The above requirement can be met by placing that data in the IRISTEMP database, which will not be rolled back.

Temporary Globals and the IRISTEMP Database

By mapping the table entities you do not want to roll back to this database, you can retain the information after the rollback.

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Article Rodolfo Pscheidt Jr · Apr 15 5m read

Introduction
InterSystems IRIS Adaptive Analytics is an optional extension that provides a business-oriented, virtual data model layer between InterSystems IRIS and popular Business Intelligence (BI) and Artificial Intelligence (AI) client tools. Adaptive Analytics is powered by AtScale, the AtScale documentation can be found at this link: https://documentation.intersystems.atscale.com

This article will showcase some AtScale features that can facilitate data analysis:

  1. Cube creation
  2. Excel visualization
  3. Parallel Period
  4. Queries
  5. Snowflake
  6. Security
  7. Aggregates

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InterSystems Official Daniel Palevski · Apr 15

The 2025.1.4 and 2024.1.6 maintenance releases of InterSystems IRIS® data platform, InterSystems IRIS® for Health, and InterSystemsHealth Connect™ are now Generally Available (GA). These releases include the fixes for a number of recently issued alerts and advisories, including the following: 

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InterSystems Official Daniel Palevski · Apr 15

Summary

Alert ID

Product & Versions Affected

Risk Category & Score

Explicit Requirements

IF-9262

InterSystems IRIS® for Health

InterSystems Health Connect

versions 
2024.1.4, 2024.1.5

System Stability Concern: 5 (High)

FHIR and Health interoperability issues may cause upgrade failures and unexpected or adverse product behavior. 

Issue

  • The impacted versions of InterSystems IRIS for Health and Health Connect are being removed from WRC distribution sites due to issues identified in several FHIR and healthcare interoperability features.
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Article Kate Lau · Apr 14 3m read

Hi, every one. Again, it's me!!😀😀

Recently I was trying to organize some learning materials for InterSystems IRIS😆, and realized that the resources are actually quite scattered.🤐

So I put together a list here—grouped by categories—for anyone who:

  • is new to InterSystems
  • or wants to go deeper into specific areas

Also adding some of my own experience on what worked (and what didn’t, may be only not work for me🤫🤐).


1. For starters

If you don’t know where to begin, start here:

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