Article
· Sep 22, 2016 3m read
Windows write caching

(This article was reviewed in February 2021. It is still relevant to Caché-based installations and similarly applies to IRIS-based installations.)

This article discusses the Windows write caching setting which can leave systems vulnerable to data loss or corruption in the event of power loss or operating system crash. The setting is on by default in some Windows configurations.

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Hey Developers,

Enjoy watching the new video on InterSystems Developers YouTube:

Understanding your InterSystems Login Account & Where to Use It @ Global Summit 2022

https://www.youtube.com/embed/__47xt1RH3E
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InterSystems has corrected an issue that can cause InterSystems IRIS® and Caché to not take advantage of large pages for shared memory on Windows, even though these products report that large pages are allocated. This can have detrimental effects on system performance.

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Prospects, Customers, and Employees can now download IRIS and IRIS for Health both Community and Enterprise editions on https://evaluation.intersystems.com

This will allow for new features not yet released to be tested by prospective customers and current customers to sample the latest and greatest that is in the works.

How to View:

For Prospects simply selecting an option with "(Preview)" in the Name will allow for download of preview software

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Question
· Mar 22, 2022
load and compile from java

Hi i am trying to load and compile one class from java . I am following this code. I am using iris 2021.2

irisConnection = (IRISConnection) DriverManager
.getConnection("jdbc:IRIS://10.20.30.40:51773/MYNAMESPACE", "username", "password");
iris = IRIS.createIRIS(irisConnection);
iris.classMethodStatusCode("%SYSTEM.OBJ", "Load", "/filePath/SumanPramodTest.test3.CLS.xml","/displaylog=0 /displayerror=0");

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I have a SQL query that I want to run against MS SQL from cache ensemble using the SQL outbound adapter. If I run this query direct from MS SQL Studio it take about 7 seconds MAX and returns about half a million rows. The row only contains one column it is a number all same size and if I run this query in the production in ensemble it takes for ever the production finishes without getting the response back. The same query run in cache outside the ensemble environment writing results to a file it returns results taking about 3minutes to complete.

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For all docker versions we have direct download links.

Like on our repository or on docker hub :

However, there is no direct link to download the installable (non docker) versions.

I propose you these two scripts to solve this need, the first one is with the wget command, the other one in curl.

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Question
· Jul 1, 2021
ifexpression syntax

What is the correct syntax when passing values on a zen method after ifexpression?

<pagebreak ifexpression="%report.PageBefore('Graph',1)=1"></pagebreak> ????

.....

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InterSystems has identified an issue with product distributions containing Certificate Authority certificates that expire at the end of 2020. This issue does not affect system operation or system security in any way, although it does generate alerts about expiring certificates in the cconsole.log or messages.log files.

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Hi, guys,

I'm working on zen report to display an examination report for a client.

They stored order information in several tables. Examination findings and diagnosis were recorded in a html page and codes of the page was stored in another table. We need to put them together in one single report.

So far we can only read the html codes from that table which is a whole page since it start from label <html> and have <header>. We know that if we are using javascript we can display the page by assigning the codes to innerHtml property of an iframe object.

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InterSystems has corrected a defect that may cause Windows Telnet processes that are secured using SSL/TLS to hang indefinitely; this may then cause an instance to become unresponsive. This defect is present only on Windows platforms.

This defect affects:

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