#InterSystems IRIS

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InterSystems IRIS is a Complete Data Platform
InterSystems IRIS gives you everything you need to capture, share, understand, and act upon your organization’s most valuable asset – your data.
As a complete platform, InterSystems IRIS eliminates the need to integrate multiple development technologies. Applications require less code, fewer system resources, and less maintenance.

Question Martin Nielsen · May 2, 2025

Hi, I am unsure how to remove this restriction; when I am performing dynamic SQL using ##class(%SQL.Statement).%ExecDirectNoPriv(, .query, args...)

It works fine, but the moment I add specific properties from the persistent class I am performing the select on into the WHERE clause, I get: ERROR #5540: SQLCODE: -99 Message: User UnknownUser is not privileged for the operation.

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Article Daniel Kutac · May 13, 2025 2m read

I'm sure most of you are familiar with utility %SYS.MONLBL that is crucial when analysing code performance bottlenecks. It allows you to select a number of routines that you want to monitor at runtime and also specify what process(es) you want to watch. BUT, what if you do not know exactly, what process would execute your code? This is true with many web based (CSP/REST) applications today. You want to minimize the resource utilization on your production system that needs analysis. So, how about doing a small tweak?

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Question Dmitrij Vladimirov · May 19, 2025

I have a widget that uses "choose Data source" control option. Termlist for the control consist of the two data sources and i want to set one of them by default. For example: I have two data sources, one is grouped by month, the other by year. I need to set the one that is grouped by year by default 

Using default value at the bottom return an error

How can i achive that?
 

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Announcement Celeste Canzano · May 13, 2025

Hello community,

The Certification Team of InterSystems Learning Services is excited to announce the release of our new InterSystems IRIS Development Professional exam. It is now available for purchase and scheduling in InterSystems exam catalog. Potential candidates can review the exam topics and the practice questions to help orient them to exam question approaches and content. Candidates who successfully pass the exam will receive a digital certification badge that can be shared on social media accounts like LinkedIn.  <--break->If you are new to InterSystems Certification, please review our program pages that include information on taking examsexam policiesFAQ and more. 

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Question Yaron Munz · May 16, 2025

Hello,

We had a weird behavior of task manager in mirror async backup-failover pair:

1. server 1 was primary, server 2 backup for over a month, as there was no automatic failover (switch) both had IRIS up for over a month
2. We manually switched making server 2 primary
3. The tasks that had this issue were set to "run on Primary only"
4. Task manager started to execute tasks every minute: we noticed that "Next scheduled time" is always calculated in past date, and progressing by the task interval (e.g. a task that supposed to run every hour will have "Next scheduled time" in the past e.g.

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Question Anil Mathew · May 18, 2025

I have a rest API Class used for getting data from Cache 2018 version.
I have single route '/callfuntions'
I send the following parameters to the API :-  className, methodName, params
I use $CLASSMETHOD to execute and send the result back to the client.

If I make more that 10 to 12 requests in quick succession, then it stops sending data.

if I wait for over 10 seconds it allows me to send more requests to the API.  How do I resolve this?

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Question Geoffrey Lu · May 16, 2025

For background, I've developed code that relies on %JSON.Adaptor functionality across an entire package of classes in our codebase. In regenerating these classes with %JSON.Adaptor as a superclass, I've encountered compilation errors from the JSON adaptor generators in certain classes, triggered by certain property types or parameters that are incompatible.

There are two causes for these compilation errors: either 1) the property is computed, and therefore certain property methods in the code generated by the JSON adaptor, such as .

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Question Ashok Kumar T · May 16, 2025

Hello Community,

Is it possible to retrieve/find all the names of subroutines, procedures, or functions from a deployed routine?. in the routine below, how can I extract names like x2 and execsql? I’ve just tried using openId on %RoutineMgr  but it didn’t help.

xdeploy.mac
xdeploy
 quit
x2 ; test1
 write 123
 q
execsql(sql) ; test2
 Set tResult = ##Class(%SQL.Statement).%ExecDirect(,sql)
 Return tResult

Thanks

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Announcement Larry Finlayson · May 15, 2025

Developing with InterSystems Objects and SQL – In Person June 9-13, 2025

  • This 5-day course teaches programmers how to use the tools and techniques within the InterSystems® development environment.
  • Students develop a database application using object-oriented design, building different types of IRIS classes.
    • They learn how to store and retrieve data using Objects or SQL, and decide which approach is best for different use cases.
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Question Julius Kavay · Apr 22, 2025

I'm playing with %Net.DB.Iris and stumbled over a mystery

set con=##class(%Net.DB.DataSource).CreateConnection(host,...)
set srv=con.CreateIris()
write srv.ClassMethodValue("%SYSTEM.Util","InstallDirectory")

Entering the above lines (in a terminal session) on my local instance yields the correct answer for:

host = "localhost"
host = the real IP of localhost (i.e. host="192.168...")
host = "10.x.y.dev" customers development system (over a VPN tunnel)

but for

host = "10.x.y.tst" (customers test system) I get an error:
 <THROW>zClassMethodValue+8^%Net.DB.Iris.

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Question Scott Roth · May 13, 2025

We are attempting to send HL7 messages over to CBOARD NetMenu over HTTP using SSL. We set this up using the EnsLib.HL7.Operation.HTTPOperation adapter. When we attempt to send the message we are receiving 

MSH|^~\&|||DIETOE|A6M0|202505131437||ACK^HTTP^415|00|P|2.1 MSA|AE|9165602|HTTP (N)ACK 'HTTP/1.1 415 Unsupported Media Type'

The vendor mentioned something about putting a SOAP/XML wrapper around the HL7 message but isn't that what the HTTPOperation adapter does? Why would we be getting Unsupported Media Type. How would we go about setting the Media Type for the HTTP HL7 message?

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Question Ashok Kumar T · May 8, 2025

Hello Community,

I executed the below query in the %ZLANGC00.mac routine. It returns results when using dynamic SQL, but not with embedded SQL(returns 0). 

 &SQL(SELECT count(*) INTO :Cnt FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_TYPE='BASE TABLE'")
 Write "SQL Table count : "_Cnt,!
 Set tResultSet = ##class(%SQL.Statement).%ExecDirect(,"SELECT count(*) FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_TYPE='BASE TABLE'")
 Do tResultSet.%Display()

Thanks!

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Question Anthony Decorte · May 12, 2025

Hello,

I have a problem with the deployment. When I deploy using the Ens.Deployment.Deploy class, I no longer receive the logs in the terminal. However, the deployment went well, I see it in the history on the portal.

It works on our environment, but not on the client's.

 

Set tSC = ##class(Ens.Deployment.Deploy).DeployCode(chemin_"GESL_SVCCLI_DEPLOY_CPT-243_V4_0.xml","SVCCLI.ProdClient",1,chemin_"GESL_SVCCLI_DEPLOY_CPT-243_V4_0_rb.xml","L",chemin_"GESL_SVCCLI_DEPLOY_CPT-243_V4_0.log",1,1)

 

Thank you 🙂

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Question Julius Kavay · Apr 29, 2025

According to documentation, quotation: "$THIS contains the current class context.
The class context for an instance method is the current object reference (OREF).
The class context for a class method is the current classname as a string value."
 
As my example below shows, either the documentation or the implementation (or both) is wrong, I always call a class method (Value) and expected the class name as the return value but got either the class name or an OREF. Moreover, if I repeat the call, I get another values. But why?

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Question Norman W. Freeman · May 7, 2025

I use the following code to protect some code for being called by multiple processes at same time :

lock +^TEMP("FOO"):0 //don't wait
quit:'$test
//critical section
//...
lock -^TEMP("FOO")

This works between processes but it does not prevent the same process entering critical section twice.

How to do that, is there any lock option ? I would like it to behave as the lock in C# or Java.

It's OK for me to use something else than LOCK instruction (eg : signals)

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Question Scott Roth · May 9, 2025

I am running into an issue where a JSON response is missing keys...

{
    "count": 0,
    "pageInformation": {
        "offset": 0,
        "size": 10
    },
    "items": []
}

Within the JSON response I am only looking for two fields portalUrl and portalId. I have tried using $LENGTH and %IsDefined to check if they are valued but neither work. 

  If ((tHttpResponseIsObject) && ($ZCONVERT(tHttpResponseContentType,"L") [ "application/json"))
  {
    set responseData = {}.%FromJSON(tHTTPResponse.Data)
    set pResponse = ##class(osuwmc.COM.Response.
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Article Sam Ferguson · May 9, 2025 10m read

Regardless of whether an instance of IRIS is in the cloud or not, high availability and disaster recovery are always important considerations. While IKO already allows for the use of NodeSelectors to enforce the scheduling of IRISCluster nodes across multiple zones, multi-region k8s clusters are generally not recommended or even supported in the major CSP's managed Kubernetes solutions. However, when discussing HA and DR for IRIS, we may want to have an async member in a completely separate region, or even in a different cloud provider altogether.

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Question Ashok Kumar T · May 7, 2025

Hello Community,

When retrieving strings from the DAO, if the string exceeds the capacity of an ObjectScript string variable, it returns <MAXSTRING>. To prevent this, use dao.%Get(key, default, "stream") to retrieve the value as a stream (%Stream.DynamicBinary). However, Why can't we use other stream objects such as %Stream.TmpCharacter instead of %Stream.DynamicBinary/%Stream.DynamicCharacter (I understand It is not possible to create a direct object instance for %Stream.Dynamic* classes) .

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Question Ewan Whyte · May 8, 2025

I'm trying to use the assign option within a ruleset. I can trace the value with no issues but when I try to assign the same value to a variable of Namespace I get an error.
Ideally I would like to use a variable instead of repeating the Piece repeatedly throughout the rules.
Ruleset


And this is the error that I am getting.
ERROR <Ens>ErrException: <PROPERTY DOES NOT EXIST>zevaluateRuleDefinition+14^SFT.RoutingRules.AlertManCreationRule.1 *Namespace,Ens.Alerting.Context.CreateAlert -- logged as '-' number - @' set pContext.Namespace=##class(Ens.Rule.FunctionSet).Piece((pContext.AlertRequest.

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Question Scott Roth · May 6, 2025

I am trying to replicate a REST call that I am able to make via a Postman call within a EnsLib.REST.GenericOperation.

It's been a while since I have messed around with trying to make external REST calls. When I execute my REST call, tSC is coming back with an error and I am trying to pinpoint why. I tried turning on ISCLOG = 5 but when calling the REST Operation from the Testing tool it is not logging anything to the ISC log.

How do we see the RAW request being sent out to verify that my request is formatted properly?

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Question Juan Mota Sanchez · May 3, 2025

Hi,

I've been working on a very basic Interoperability production in my computer. I followed one of the examples in the courses and created a TEST.FileRouterRoutingRule, but when trying to edit this rule, it takes me to the Rule Editor Login Page, where I can't get in (Not even with the _SYSTEM credentials) - Is this functionality unavailable in the community edition?

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Announcement Liubov Zelenskaia · May 7, 2025

Join our next in-person Developer Meetup in Cambridge to explore the latest trends, tools, and features for innovating on health data.

Talk 1: AI Coding Assistants in Practice
Speaker: @Derek Gervais, Developer Relations Evangelist, InterSystems

Talk 2: MCP, SkyNet and You!
Speaker: Dave McCaldon, Senior Development Manager, InterSystems

>> Register here

 

⏱ Day and Time: May 14, 5:30 p.m. to 7:30 p.m.
📍CIC Venture Café in Cambridge, Massachusetts

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