Our Pledge

In the interest of fostering an open and welcoming environment, we as contributors and manager pledge to making participation in InterSystems Developer Community a harassment-free experience for everyone, regardless of age, body size, disability, ethnicity, gender identity and expression, level of experience, nationality, personal appearance, race, religion, or sexual identity and orientation.

Our Standards

Examples of behavior that contributes to creating a positive environment include:

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** Revised Feb-12, 2018

While this article is about InterSystems IRIS, it also applies to Caché, Ensemble, and HealthShare distributions.

Introduction

Memory is managed in pages. The default page size is 4KB on Linux systems. Red Hat Enterprise Linux 6, SUSE Linux Enterprise Server 11, and Oracle Linux 6 introduced a method to provide an increased page size in 2MB or 1GB sizes depending on system configuration know as HugePages.

At first HugePages required to be assigned at boot time, and if not managed or calculated appropriately could result in wasted resources. As a result various Linux distributions introduced Transparent HugePages with the 2.6.38 kernel as enabled by default. This was meant as a means to automate creating, managing, and using HugePages. Prior kernel versions may have this feature as well however may not be marked as [always] and potentially set to [madvise].

Transparent Huge Pages (THP) is a Linux memory management system that reduces the overhead of Translation Lookaside Buffer (TLB) lookups on machines with large amounts of memory by using larger memory pages. However in current Linux releases THP can only map individual process heap and stack space.

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Hello Community,

We're thrilled to invite all our Developer Community members (both InterSystems employees and not) to participate in our next contest!

💡 The 4th InterSystems Ideas Contest 💡

We're looking for your innovative ideas to enhance InterSystems IRIS and related products and services. We encourage suggestions based on real-life use cases, highlighting the tangible benefits your idea will bring to other users and how it will enhance developers' experiences with InterSystems technology.

📅 Duration: June 9 - July 20, 2025

🏆 Prizes for the best ideas and a random draw!

🎁 Gifts for everyone: A special gift will be given to each author whose idea is accepted in the contest.

>> SUBMIT AN IDEA <<

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Hello everybody,

I would like to export project contents using Visual Studio Code, as well as I do with InterSystems Studio.

However, while attempting the export through the InterSystems extension I get the following error:

- There are no folders in the current workspace that code can be exported to.

These are the step to reproduce my error:

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Setting the TZ Environment Variable on Linux

The Update Checklist for v2015.1 recommends setting the TZ environment variable on Linux platforms and points to the manpage for tzset. This is recommended to improve the performance of Cache’s time-related functions. You can find out more about this here:

https://community.intersystems.com/post/linux-tz-environment-variable-not-being-set-and-impact-caché

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Hi Community!

I'm super excited to be your on-the-ground reporter for the biggest developer event of the year - InterSystems Ready 2025!

As you may know from previous years, our global summits are always exciting, exhilarating, and packed with valuable knowledge, innovative ideas, and exciting news from InterSystems. This year is no different. But let's not get ahead of ourselves and start from the beginning.

Pre-summit day was, as usual, filled with fun and educational experiences. Those who enjoy playing golf (I among them) got up at the crack of dawn to tee off before the sun got too high up. Here's our dream team in action:

@sween, @Mark Bolinsky, @Anzelem Sanyatwe, @Iryna Mykhailova

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Hi Community,

Enjoy the new video on InterSystems Developers YouTube:

⏯ Innovation Highlight - Medical Device Waveform Data @ Global Summit 2024

https://www.youtube.com/embed/sht-gWZubVs
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Hello InterSystems EHR community,

InterSystems Certification is currently developing a certification exam for InterSystems EHR Reports specialists, and if you match the exam candidate description given below, we would like you to beta test the exam! The exam will be available for beta testing starting June 30, 2025.

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Here at InterSystems, we often deal with massive datasets of structured data. It’s not uncommon to see customers with tables spanning >100 fields and >1 billion rows, each table totaling hundred of GB of data. Now imagine joining two or three of these tables together, with a schema that wasn’t optimized for this specific use case. Just for fun, let’s say you have 10 years worth of EMR data from 20 different hospitals across your state, and you’ve been tasked with finding….

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I have a CSP page that throw a "414 error - Request-URI Too Long" when I put lot of text (eg : 10000 characters) into a field of a submitted form. The form is submitted using POST method.

Based on some experiments I made, it seems the max size of a URL is around 8200 characters.

What is the official limit, and is there a way to increase it ? I searched in the documentation but couldn't find anything.

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An extension “extends” or enhances a FHIR resource or a data element in a custom way. The extension can be added to the root of a resource, such as “Patient.ethnicity” in US Core profile, and they can be added to individual elements such as HumanName, Address or Identifier.

Did you know that you can also add an extension to a primitive data type?

Primitives usually store a single item and are the most basic element in FHIR. For example: "Keren", false, 1234, 12/08/2024 etc.

For example, the patient resources might look like this:

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As you have seen in the latest community publications, InterSystems IRIS has included since version 2024.1 the possibility of including vector data types in its database and based on this type of data vector searches have been implemented. Well, these new features reminded me of the article I published a while ago that was based on facial recognition using Embedded Python.

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Hi Community,

Enjoy the new video on InterSystems Developers YouTube:

⏯ It's CLEAR - Re-Imagining the Digital Front Door @ Global Summit 2024

https://www.youtube.com/embed/hfqELHz5FeI
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Hi Community,

We’ve got something exciting for you — it’s time for a new demo video contest, and this time, you’re in the judge’s seat!

📺 Demo Games for InterSystems Sales Engineers 📺

For this contest, InterSystems Sales Engineers from around the world submitted short demo videos showcasing unique use cases, smart solutions, and powerful capabilities of InterSystems technologies.

Now it’s your turn! We’re opening up voting to the entire Developer Community. Your insight and perspective as developers make you the perfect experts.

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Hello and welcome to the June 2025 Developer Community YouTube Recap.
InterSystems Global Summit
By Rochael Ribeiro Filho, Fernando Ferreira
By Benjamin De Boe, Qi Li
By Alex MacLeod, Jason Sherwin
By Renan Lourenco
By Jim Breen, Jenny Ames, Art Dirik, Chi Nguyen-Rettig
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Is it possible to audit code changes in a namespace?

Ideally what we'd like to be able to do is check which classes were compiled (or deleted) in a time period, eg in last 3 months, and which user made those changes. Even better would be an audit of what those changes were, but that's less important (for us, as we can probably find that information in other ways).

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I want to limit the length of the value of a textarea in Zen. In HTML the textarea element has a 'maxlength' attribute, but the Zen component doesn't have an equivalent property. Is there any way to add a maximum length in Zen short of creating my own custom component?

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Hi Community!

We are excited to announce the first French technical article writing contest!

✍️ Technical Article Contest ✍️

This is the perfect opportunity for all InterSystems technology enthusiasts to share their knowledge and showcase their writing skills. No matter your experience level, everyone is welcome to participate. Articles can cover a wide range of technical topics related to InterSystems products or services. So, let your creativity and expertise run wild!

📅 Contest period: September 2-29, 2024

🎁 Gifts for all: a special gift is prepared for each participant!

🏅 Prizes for the authors of the best articles

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Hi Developers!

We are pleased to announce the launch of the
🏆 2nd Tech Article Contest on Chinese Developer Community🏆

From September 19 to November 24, 2023 (Beijing Time), we welcome you to contribute articles related to InterSystems technology.

🎁 Prize for Everyone: A special prize pack for each author who takes part in the contest.

🏆 Main Prizes: Apple AirPods Pro; Osprey Proxima Backpack; Home Office Pro Lap Desk; Sound Machine with Wireless Charger; JBL Pulse 5 Bluetooth Speaker; Sound Machine with Wireless Charger; Hammock InterSystems; Light Up Your Logo Charging Pad; InterSystems Developer Community Blanket

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Article
· Apr 25, 2023 12m read
Configuring Mirror in Docker

A common need for our customers is to configure both HealthShare HealthConnect and IRIS in high availability mode.

It's common for other integration engines on the market to be advertised as having "high availability" configurations, but that's not really true. In general, these solutions work with external databases and therefore, if these are not configured in high availability, when a database crash occurs or the connection to it is lost, the entire integration tool it becomes unusable.

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Over the past couple of months, I have been working on the SMART on FHIR EHR Launch to test the capabilities of IRIS for Health using two open-source apps from CSIRO: SMART-EHR-Launcher and SMART Forms App. This journey has been incredibly interesting, and I’m truly grateful for the opportunity to work on this task and explore more of IRIS for Health’s potential.

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