#Databases

7 Followers · 382 Posts

This tag includes content related to databases as systems for storing, organizing, and managing data. Covers concepts such as data models, querying, indexing, performance, and best practices for working with structured and unstructured data.

Question Jerry Wang · Apr 27, 2023

Hi experts

I'm trying to configure an IRIS ODBC connection with "Windows NT authentication using the network login ID". I have created the System DSN as below:

and user (PROD\test) in the SQL Gateway connection 

However, as the error message suggests, IRIS is trying to connect with PROD\svc_mist, rather than PROD\test configured above. 

Is there anyway to configure the ODBC connection with specified account with Windows Auth method? 

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Article Yuri Marx · Oct 2, 2024 14m read

In the modern world, the most valuable asset for companies is their data. Everything from business processes and applications to transactions is based on data which defines the success of the organization's operations, analysis, and decisions. In this scenario, the data structures need to be ready for frequent changes, yet in a managed and governed way. Otherwise, we will inevitably lose money, time, and quality of corporate solutions.

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Question Mary George · Oct 8, 2025

Hi Team, 

Can I please check if anyone has built a simple web interface for maintaining custom SQL lookup class.  

We have a simple persistent class in HealthShare which is used for storing Pathology test codes. Test codes in this lookup class is used for message filtering and applying additional logic when processing pathology results/orders. 

We want to make this class available to external users from pathology (not the usual management portal users) to maintain so that they can add/edit/delete test codes as required.

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Question Mark Sharman · Sep 30, 2025

At the moment, we have 10 HealthShare instance servers (5 x mirrored pairs), where we implement an External Backup approach, using the freeze/thaw commands against whichever server of the pair is the backup mirror member, to complete a VM level backup. These backups are stored to a disk within our control, to purge as required. This approach allows us to deliver a zero downtime backup approach.

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Article Robert Cemper · Sep 22, 2025 2m read

Finishing my previous example for multiple IRIS instances, I tried
to compose a local single instance version.  The step from the external
Python app to a version using embedded Python seemed to be obvious.
This was a wrong assumption, as some Python libraries just refused installation
into my local Windows-based environment.

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Question Evan Gabhart · Sep 24, 2025

I am working on a tool that configures an instance to use a common default routine database across all custom Namespaces. For instances that already have distinct default routine databases for their Namespaces, this would involve a step of merging over all code from the current default routine databases to the new "super" routine database. This should be done in such a way that only merges contents in the default routine database (not mapped databases) and is able to detect/exclude contents that already exist in the target database.

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Announcement Laurel James (GJS) · Apr 12, 2024

We're excited to announce a new version release of the SQLTools VS Code extension. 

SQLTools connects VS Code users to the most commonly used databases using drivers, including InterSystems IRIS. With over 3.5 million downloads, it is helping users work with their data much more easily.

Version 0.28.2 is now available and includes:
- New CSV export format options.
- Improved connection quickpick and status bar item.
- Query error strings now wrap.
- Document settings that require a restart after changing.
- Resolve contradictory SSL settings in MySQL driver.

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Question Rutvik ISM · Aug 19, 2025

I would like to learn about the binary and document reference FHIR Resources. For the PDF data stored in those resources. But I think Binary Resource for the Document PDF stored in FHIR, so this resource is best for it. So sometimes Large PDF 15-page (~35md) data converts into base64 then data length is ~50 lac charecters length of base64binary data. this data store in Binary Resource on data field https://www.hl7.org/fhir/R4/binary.html follow this url this resource used in my case. so it's support the 50 lac charecter of the base64 length? This resource can be Insert into IRIS?

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Question Scott Roth · Sep 8, 2025

We currently have Business Operation that we built to use the EnsLib.SQL.OutboundAdapter so we can make Microsoft SQL Server Stored Procedure calls. The BO is attached to a Java Gateway Service.

Some of our MS SQL Databases have moved from being OnPrem to Azure Cloud. We have started seeing where we are receiving errors on the BO saying that we cannot connect to the Azure Database, but we never receive a Disconnect from the Azure Database.

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Question Kanishk Mittal · Jul 28, 2025

We’re building out a data lake in IRIS 2025.1 that aggregates data across multiple business systems and departments. I’m trying to establish best practices for schema design and separation.

Right now, I’m thinking of using a separate schema for each distinct system of record feeding into the data lake - for example, one schema per upstream source system, rather than splitting based on function (e.g. staging, raw, curated). The idea is that this would make it easier to manage source ownership, auditing, and pipeline logic, especially when multiple domains are contributing data.

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Article Mihoko Iijima · Oct 3, 2024 3m read

InterSystems FAQ rubric

You can check the free disk space at any time using the system utility class: SYS.Database and query: FreeSpace.

Here's how to try it in the IRIS terminal (go to the %SYS namespace and then run it):

zn"%SYS"set

The output result example is as follows:

*In the command execution example, all databases are located on the same disk, so the free disk space (DiskFreeSpace) returns the same value.

159

If you want to specify the database directory you want to refer to, run the following:

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Article Henry Pereira · Sep 29, 2024 3m read

sql-embedding cover

InterSystems IRIS 2024 recently introduced the vector types. This addition empowers developers to work with vector search, enabling efficient similarity searches, clustering, and a range of other applications. In this article, we will delve into the intricacies of vector types, explore their applications, and provide practical examples to guide your implementation.

At its essence, a vector type is a structured collection of numerical values arranged in a predefined order. These values serve to represent different attributes, features, or characteristics of an object.

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Question steven Henry · Jul 10, 2025

Hello my friends,

I have a problem with logi report, 

in my store procedure,  I create code like this?

$ListToString(%DLIST(DISTINCT (ARCIM_Desc)),'<br/>') as "ARCIM_Desc", -> this is the problem

$ListToString(%DLIST(DISTINCT (MRDIA_ICDCode_DR)),'<br/>') as "MRDIA_ICDCode_DR", -> it's works fine

as you see there's a <br/> in the display of the report

I have no idea about this, maybe someone can help me fix this problem ?

Thank You

Best Regards,

Steven Henry

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Question steven Henry · Jul 10, 2025

Hello my friends,

I have a problem with Objectscript, why the value of address become like this ?

everything works fine except the Address,

this is my code, do I need something to make this into real address ? should I put something in my code ? 

 set paper=obj.PAADMPAPMIDR.PAPMIPAPERDR

            if '$isobject(paper) continue

            set Address=paper.PAPERStName

thank you for your help

Best Regards,

Steven Henry

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Question Norman W. Freeman · Jun 27, 2025

I have notified that on several servers the IRISTEMP database is reported as only a few GB in size while on the disk where it's located, the IRIS.DAT file is much bigger (eg: 3GB reported in Portal (including free space) while file on the disk file is 121GB). The last modification date of IRIS.DAT is recent so I'm not looking into a location no more in use.

Is there an explanation for that difference in size ? 

I know temporary databases are special in a way they are not always stored on the disk, here is what InterSystems says about it :

Changes to temporary globals are not written to disk.

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Question Norman W. Freeman · Jun 10, 2025

I have a database that is 2TB in size (from a LIVE system).

I would like to defragment it but I have some questions. I took a look at official documentation but it does not help.

  • Is is possible to get a measurement about how much database is fragmented ? (eg: a percentage). Most operating systems are able to give a an indication about how much a filesystem is fragmented before any operation.
  • The database is on a LIVE server, the IRIS service is restarted every night (around 1AM). Because of that I can't run defragment continuously. I don't think it will be able to complete under 24 hours.
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Article Harry Tong · Jun 6, 2025 2m read

If you're migrating from Oracle to InterSystems IRIS—like many of my customers—you may run into Oracle-specific SQL patterns that need translation.

Take this example:

SELECT (TO_DATE('2023-05-12','YYYY-MM-DD') - LEVEL + 1) AS gap_date
FROM dual
CONNECT BY LEVEL <= (TO_DATE('2023-05-12','YYYY-MM-DD') - TO_DATE('2023-05-02','YYYY-MM-DD') + 1);

In Oracle:

  • LEVEL is a pseudo-column used in hierarchical queries (CONNECT BY). It starts at 1 and increments by 1.
  • CONNECT BY LEVEL <= (...)
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Question Norman W. Freeman · May 20, 2025

Hello,
I have created this script that does lot of writes to a single global. DB write performance is much slower than expected (compared to another similar systems).

set"..."//fill it with something

I have notified the following : 

  • CPU usage does not reach 100% on a single core (eg: 25% of total CPU usage should be seen on a 4 cores system). Instead, much lower CPU usage is shown (with some drops to 0% from time to time). It looks like process has to wait for I/O completion before proceeding. Removing the set
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Article Guillaume Rongier · Apr 9, 2019 3m read

IRIS and Ensemble are designed to act as an ESB/EAI. This mean they are build to process lots of small messages.

But some times, in real life we have to use them as ETL. The down side is not that they can't do so, but it can take a long time to process millions of row at once.

To improve performance, I have created a new SQLOutboundAdaptor who only works with JDBC.

BatchSqlOutboundAdapter

Extend EnsLib.SQL.OutboundAdapter to add batch batch and fetch support on JDBC connection.

Benchmark

Benchmarks released on Postgres 11.2 with 1 000 000 rows fetched and 100 000 rows inserted on 2 columns.

alt text

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Question Scott Roth · Jun 11, 2025

I have created a New Database/Namespace within our TEST environment on both the Primary and Backup of the mirror. When I go to create the database/namespace on the DR node I am getting "Cannot open file '/ensemble/TEST/iris.cpf_...." while the cpf file that it references does not exist. Anyone have any clue to why this might be happening?

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InterSystems Official Daniel Palevski · Jun 10, 2025

Summary

Advisory ID

Product & Versions Affected

Risk Category & Score

Explicit Requirements

DP-439649

Products:

  • InterSystems IRIS®
  • InterSystems IRISfor Health
  • HealthShare®Health Connect

Versions:

  • 2025.1.0.225.1
  • 2025.1.0.223.0
  • 2024.1.4
  • 2023.1.6
  • 2022.1.7

Operational:
4 – High Risk

System Stability:
3 – Medium Risk

This issue does not constitute a security vulnerability. It does not allow users to bypass permissions checks or access data outside their authorized namespace.

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Article José Pereira · Aug 2, 2024 28m read

An experiment on how to use the LangChain framework, IRIS Vector Search, and LLMs to generate IRIS-compatible SQL from user prompts.

This article was based in this notebook. You can run it with a ready to use environment with this application in OpenExchange.

Setup

First, we need to install the necessary libraries:

!pip install --upgrade --quiet langchain langchain-openai langchain-iris pandas
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Question Michael Davidovich · Apr 10, 2025

Hello,

Our software commonly returns a full result set to the client and we use the DataTables plugin to display table data.  This has worked well, but at datasets grow larger, we are trying to move some of these requests server-side so the server handles the bulk of the work rather than the client.  This has had me scratching my head in so many ways.  

I'm hoping I can get a mix of general best practice advice but also maybe some IRIS specific ideas.

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InterSystems Official Daniel Palevski · Apr 2, 2025

Summary of Alerts

Alert ID Product & Versions Affected Explicit Requirements
DP-439207 InterSystems IRIS® data platform 2024.3 (AIX) AIX installations Using JSON processing and Unicode non-Latin-1 character sets
DP-439280 InterSystems IRIS 2024.3 (containers with IntegratedML) IntegratedML Containers using TensorFlow

Detail of Alerts

DP-439207 - AIX JSON Unicode Parsing Issue

A bug has been identified in InterSystems IRIS 2024.3.0 on AIX instances that affects the parsing of JSON Unicode strings.

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