Nerd For Tech
Published in

Nerd For Tech

Tune up an upgraded Red Hat CodeReady Studio


Try to start codereadystudio with the -clean option when it is slow after an upgrade.


I worked with Red Hat Code Ready Studio version 12.19.1 for a while. And already several months ago version 12.21.0 was released. Halfway December 12.21.1 came GA.

Earlier I already tried 12.21.0, but it was incredibly slow. It was unworkable. So, I put it aside and went back to the 12.19.1 version. Today, I decided to retry 12.21.1. But, with the same result: unworkable slow.

I tried to give it some more heap space. You can do that by editing the file $CRS_HOME/studio/codereadystudio.ini:

Where $CRS_HOME points to my Code Ready Studion home (/app/redhat/codereadystudio-12.21.1).

And then I monitored it for a whil with $JDK11_HOME/bin/jconsole. But, to no avail.

At the end of my rope, I decided to scan around known issues section in the Release Notes. And there my eye caught the following:

Restart codereadystudio with the -clean option

So, I simply restarted my codereadystudio with the -clean option:

Clean start of Code Ready Studio

After that Code Ready Studio runs fine!




NFT is an Educational Media House. Our mission is to bring the invaluable knowledge and experiences of experts from all over the world to the novice. To know more about us, visit

Recommended from Medium

How to Retrieve Emails Using IMAP in Python

The brand and economic advantages of the Docker / Moby split

Insertion Sort

Self-documenting code to improve readability in Swift

What should you do when you are from a low ranked college?

Flutter: Permission.location.request() always returns permanentlyDenied.

Karma #shorts

GCI 2019/20 with AOSSIE

Get the Medium app

A button that says 'Download on the App Store', and if clicked it will lead you to the iOS App store
A button that says 'Get it on, Google Play', and if clicked it will lead you to the Google Play store
Martien van den Akker

Martien van den Akker

Integration Specialist and technical architect at Virtual Sciences | Conclusion. Focused on Red Hat Fuse and OpenShift and Java. Still a bit an Oracle guy.

More from Medium

Sessions & Session Management

Session Concepts

Detecting CVE-2021–41379 using EQL

User Variables, AutoSafe and highlighting — dose of functions you need to know about 🎯

Encrypting Secret Data Stored in ETCD Database.