** 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.

Thank you to everyone who joined our User Group Session yesterday!

It was great showing off the new Deltanji Production Component driver that facilitates source control of interoperability productions, and we had some really insightful discussions as well.

If you missed out on the session and would like a copy of the recording, feel free to drop me a message. 

Hi,

I'm often required to copy the database from production to test.

This is to 'refresh' the database on test.

To achieve this I copy all required IRIS.DAT files from production to test.

The nodes are mirrored on production.

The nodes are not mirrored on test.

Each of the database files IRIS.DAT has a mirror attribute.

Is there a way of checking if the mirror attribute is set for the database file? eg. an objectScript program

Hello Community,

We're happy to announce that the InterSystems IRIS, IRIS for Health, HealthShare Health Connect, & InterSystems IRIS Studio 2022.2 is out now!

And to discuss all the new and enhanced features of it we'd like to invite you to our webinar What’s New in InterSystems IRIS 2022.2.

Is there a way for web application to set its session timeout value according to the user role or other criteria?

In this case, I have a custom production monitor page, and I want to set 5 minutes for most users but allow managers a longer time or those displaying pages on a monitor a longer time.

Hello community! I'm working on an internal innovation effort at InterSystems considering our documentation/resources around upgrades. As part of this, I'd love to have your answers to any/all of the following questions, either via comment or (if you prefer your answers to be more private) direct message.

Thanks in advance!

What InterSystems products + versions are you running? ($zv is ideal.)

What makes you decide to upgrade?

What are your blockers to upgrading?

What is your process for evaluating and planning a possible upgrade?

What documentation resources do you use?

What gaps/issues do you see

How can I retrive the values present in the Category dropdown at the top of the production in code?

I use the following code to check the last modified date of file which is on a network shared folder (eg: "\\someserver\subfolder\foobar.txt")

set file = ##class(%File).%New(filePath)
set lastModifiedDate = file.DateModified //might hang up for a very long time set file = "" //close file

if the file is not available or does not exists, DateModified property return a negative value (which is fine). I use that property to quickly check if file has been modified and need to be imported.

Here is the issue: sometimes, accessing DateModified property will hang up for a long time (about 5 minutes)

Hi Community,

In this video, you will learn about exciting new ways to perform analytics using data in your HL7® FHIR® repository:

⏯ InterSystems IRIS FHIR SQL Builder: Sneak Peek @ Global Summit 2022

InterSystems is pleased to announce the 2022.2 release of InterSystems IRIS Data Platform, InterSystems IRIS for Health, HealthShare Health Connect, and InterSystems IRIS Studio are now Generally Available (GA).

2022.2 is a Continuous Delivery (CD) release. Many updates and enhancements have been added in 2022.2, in SQL management, cloud integration, Kafka and JMS adapters, the SQL Loader, and other areas. The new Columnar Storage has been released, but it stills an experimental feature.

Release Highlights

Platform Updates

InterSystems IRIS Data Platform 2022.2 expands support to include the

With IRIS 2021.1, we released a significant revision our SQL utilities API at %SYSTEM.SQL. Yes, that's a while ago now, but last week a customer asked a few questions about this and then @Tom Woodfin applied gentle mental pressure ;-) to make me describe the rationale of these changes in a little more detail on the Developer Community. So here we go!

How can get support on IRIS? 

Hello 

I have a class to render reports as  pdf. My problem that arabic characters in report replaced with ####. 

Please find my code below

#dim stream as %Stream.Objectset report = $classmethod($piece(reportClass, ".cls"), "%New")
set report.RUID = RUIDset %response.ContentType = "application/pdf"

set sc = report.GenerateReportToStream(.stream, 2) return:$$$ISERR(sc) sc
do stream.OutputToDevice()

return $$$OK

Your help is appreciated.

Hi Community,
Watch the recording of the Second Community Roundtable: "What is the best source control system for development with InterSystems IRIS?" 

Some great discussions have been started during this roundtable. We invite you to continue these discussions. in the comments to this post.

Tell us, which source control you use and why – in the comments to this post. 

Hi Community,

Please welcome the new video on InterSystems Developers YouTube:

⏯ Getting To Know FHIR - The Best Explanation of FHIR They've Ever Heard @ Global Summit 2022

A new release of ZPM has been published 0.5.0

New in this release

• Added support for Python's requirements.txt file
• Using tokens for publishing packages
• Fixed various issues

Python's requirements.txt

Now, if your project uses Python embedded and requires some Python's dependencies, you can add requirements.txt file to the project, as usual for any Python project, file have to be in the root of a project next to module.xml. And with load command or install command, ZPM will install dependencies from that file with using pip.

USER>zpm "install python-faker" 

[USER|python-faker]     Reload

1. iris-dollar-list

Interpretor of $list for python named DollarList.

This interpretor was made because :

• I wanted to use $list in python.
• Embedded Python do not support $list.
• The native API version do not support embedded $list in $list.

This is a work in progress. For now, it only support embedded $list in $list, int and string.

WIP float,decimal,double

This module is available on Pypi :

pip3 install iris-dollar-list

It is compatible with embedded python and native api.

In Cache 2018, we were using a macro in a query that looked like this:

select $$GetExtraSQL^GetExtra('B',bddtl.odnumb,bddtl.odsnum,bddtl.oddsc1) as "Description", * from sqluser.bddtl

We could save that query as a view, and there was no problem with it.

In IRIS, if we put that query into SQL in the management portal, it still works, but if we save that query as a view, when we try to run a query on that view, we get a big error message:

ERROR #5540: SQLCODE: 400 Message: Process 604526 failed to compile Cached Query Class %sqlcq.R001.cls2136 with these errors: ERROR #5475: Error compiling

This is the tenth in a series of releases that are part of the developer preview program for 2022.2. Future preview releases are expected to be updated biweekly and we will add features as they are ready. Please share your feedback through the Developer Community so we can build a better product together.

As usual,  CD releases come with classic installation packages for all supported platforms, as well as container images in Docker container format.  For a complete list, refer to the Supported Platforms document.

Installation packages and preview keys are available from the WRC's preview

Hi all.

I have a scenario where I am receiving NACKs and I'd like to adjust the error handing of the operation based on the content of the NACK.

For example, I could receive the following and want to move onto the next message:

MSH| ^~\&|||||20221025083135.489+0100||ACK ^A02^ACK|9271|D|2.5.1
MSA|AE|1664378390234
ERR|||207 ^Application internal error ^HL70357^^^^^^Cannot transfer patient, encounter is cancelled.|E

However, I could also receive the following and want to keep retrying:

MSH| ^~\&|||||20221014103828.043+0100||ACK^A03^ACK|1049|D|2.5.1
MSA|AE|1665740278804
ERR|||207^Application

Adding VSCode into your IRIS container

One of the easiest ways to setup repeatable development environments is to spin up containers for them. I find that when iterating quickly, it was very convenient to host a vscode instance within my development container. Thus, I have created a quick container script to add a browser-based vscode into an IRIS container. This should work for most 2021.1+ containers. My code repository can be found here

InterSystems IRIS container with vscode and pre-connected

Overview

This project creates an IRIS container

Hi Community, 
Let's meet virtually at our first Community Roundtable! This will be a 45-min friendly discussion on a given topic: VSCode vs Studio. 
Imagine that we just gathered together to share our thoughts, experiences, tips, and tricks. If you want to discuss specific questions within a given topic - please share them in the comments.
Watch recording:

Hi developers!

If you missed our presentation at the InterSystems UK&I Summit and our demo during the Source Control roundtable, but you still want to find out more about source control for Interoperability Productions... there’s another chance to see it at our User Group Session next Thursday, November 3rd at 3pm (GMT). 

The new driver enables highly granular management of Interoperability Productions with tight integration into the InterSystems IRIS management management portal. 

Sign up via eventbrite here >> https://bit.ly/3yqzfvS

Hi Community, 

Let's meet virtually at our Second Community Roundtable!
This will be a 45-min friendly discussion on a given topic: What is the best source control system for development with InterSystems IRIS. 

>> Register here <<

Hello,

I need to add an NTE segment after the OBX segment. I'm not a programmer so, I'm hoping to do this on the DTL Editor. Is it possible? If yes, how?

Some ORU messages from my EMR come in to Iris without NTE after the OBX. Thus, I need to add it in Iris For Health. 

Thank you!

This is the ninth in a series of releases that are part of the developer preview program for 2022.2 Future preview releases are expected to be updated biweekly and we will add features as they are ready. Please share your feedback through the Developer Community so we can build a better product together.

As usual,  CD releases come with classic installation packages for all supported platforms, as well as container images in Docker container format.  For a complete list, refer to the Supported Platforms document.

Installation packages and preview keys are available from the WRC's preview

YASPE is the successor to YAPE (Yet Another pButtons Extractor). YASPE has been written from the ground up with many internal changes to allow easier maintenance and enhancements.

YASPE functions:

• Parse and chart InterSystems Caché pButtons and InterSystems IRIS SystemPerformance files for quick performance analysis of Operating System and IRIS metrics.
• Allow a deeper dive by creating ad-hoc charts and by creating charts combining the Operating System and IRIS metrics with the "Pretty Performance" option.
• The "System Overview" option saves you from searching your SystemPerformance files for system details or common configuration options.

YASPE is written in Python and is available on GitHub as source code or for Docker containers at:

• https://github.com/murrayo/yaspe

Hey Community,

Enjoy watching the new video on InterSystems Developers YouTube:

⏯ Reporting & Business Intelligence: What's New? @ Global Summit 2022

Overview

We started to use Azure Service Bus (ASB) as an enterprise messaging solution 3 years ago. It is being used to publish and consume data between many applications in the organization. Since the data flow is complex, and one application’s data is usually needed in multi applications the “publisher” ---> ”multiple subscribers” model was a great fit. The ASB usage in the organization is dozens of millions of messages per day, while IRIS platform is having around 2-3 million messages/day.

The Problem with ASB

When we started with the ASB integration, we found that the AMQP protocol is not an

InterSystems is pleased to announce that the extended maintenance releases of InterSystems IRIS, InterSystems IRIS for Health, and HealthShare Health Connect 2022.1.1 are now available. These releases provide a few selected features and bug fixes for the 2022.1.0 releases.

You can find additional information about what has changed on these pages:

• InterSystems IRIS: https://docs.intersystems.com/irislatest/csp/docbook/changes/index.html
• InterSystems IRIS for Health: https://docs.intersystems.com/irisforhealthlatest/csp/docbook/changes/index.html
• HealthShare Health Connect: https://docs.inters