Article

Erik Hemdal · Jul 22, 2019 3m read

Unexpected Write Daemon hang in an InterSystems IRIS container / Macintosh

One of my colleagues at InterSystems encountered an unexpected issue when running InterSystems IRIS on a Macintosh in a container using Docker for Mac. I’d like to share what we found, so you might avoid running into similar issues.

The Problem

#Containerization #Docker #Tips & Tricks #InterSystems IRIS

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Article

Erik Hemdal · Oct 31, 2016 8m read

Handling Date and Time Operations in Caché

Here are a few examples of conversions and operations you might need, along with links to documentation where you can learn more.

At the time I wrote this, Eastern Daylight Time was in effect for my Caché system.

How Caché keeps the time and date

Caché has a simple time format, with a longer range of recognized dates compared to some other technologies.

The current time is maintained in a special variable $HOROLOG ($H):

#Best Practices #ObjectScript #System Administration #Caché

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Article

Erik Hemdal · Jun 17, 2016 5m read

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

#Best Practices #System Administration #Caché

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