Experiencing Frozen Katalon Studio Sessions

Katalon et al,

Windows 7, 64bit
Katalon Studio; Version: 5.9.1; Build: 2
Chrome; Version 71.0.3578.98 (Official Build) (64-bit)

I will be working with Katalon Studio for a few hours when suddenly it freezes. The only recourse I have is to use Windows Task Manager to kill katalon.exe. It’s happening on a regular basis… So much so that I have created a batch file to deal with the issue.

Please find attached my Katalon log files for the past few days.

Katalon_Log_Files.zip (96.7 KB)

In the .log file I found repetitive Stack Trace:

!ENTRY org.eclipse.ui 4 0 2018-12-14 09:45:17.915
!MESSAGE Unhandled event loop exception
org.eclipse.swt.SWTError: No more handles
	at org.eclipse.swt.SWT.error(SWT.java:4559)
	at org.eclipse.swt.SWT.error(SWT.java:4448)
	at org.eclipse.swt.SWT.error(SWT.java:4419)
	at org.eclipse.swt.widgets.Widget.error(Widget.java:482)
	at org.eclipse.swt.widgets.Control.internal_new_GC(Control.java:1757)
	at org.eclipse.swt.graphics.GC.<init>(GC.java:168)
	at org.eclipse.swt.graphics.GC.<init>(GC.java:132)

Possibly your Katalon Studio is running out of memory.

Similar to:

you can easily edit the eclipse.ini file to add more. To do this, open your eclipse.ini file and edit “-Xmx512m” to a larger number like “-Xmx1024m”.

Please note that, in Katalon Studio, the eclipse.ini file is renamed to katalon.ini.

I checked my katalon.ini on Mac now. It looks like:


Why not changing: -Xms4048m -> -Xms8192m

1 Like

Thanks kazurayam,

I will check into my memory settings on Monday and post my results back here after a few days. Hope you have a great weekend.


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