# Experiencing Frozen Katalon Studio Sessions

**URL:** <https://forum.katalon.com/t/experiencing-frozen-katalon-studio-sessions/15519>\
**Category:** Bug Report\
**Tags:** katalon-studio, bugs-report\
**Created:** [December 14, 2018, 7:09pm UTC](https://forum.katalon.com/t/experiencing-frozen-katalon-studio-sessions/15519 "2018-12-14T19:09:32Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Dave\_Evers](https://dub1.discourse-cdn.com/katalon/user_avatar/forum.katalon.com/dave_evers/32/435_2.png) [@Dave\_Evers](https://forum.katalon.com/u/Dave_Evers)\
**Post date:** [December 14, 2018, 7:09pm UTC](https://forum.katalon.com/t/experiencing-frozen-katalon-studio-sessions/15519/1 "2018-12-14T19:09:32Z")

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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.

Thanks,  
Dave  
[Katalon\_Log\_Files.zip](https://europe1.discourse-cdn.com/katalon/original/1X/177902739c6ff8acf017fd63742014d81c954a66.zip) (96.7 KB)

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**Author:** ![kazurayam](https://dub1.discourse-cdn.com/katalon/user_avatar/forum.katalon.com/kazurayam/32/333_2.png) [@kazurayam](https://forum.katalon.com/u/kazurayam)\
**Post date:** [December 14, 2018, 10:11pm UTC](https://forum.katalon.com/t/experiencing-frozen-katalon-studio-sessions/15519/2 "2018-12-14T22:11:23Z")

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In the .log file I found repetitive Stack Trace:

```auto
!ENTRY org.eclipse.ui 4 0 2018-12-14 09:45:17.915
!MESSAGE Unhandled event loop exception
!STACK 0
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:  
[https://developer.ibm.com/answers/questions/378241/what-is-the-cause-of-the-orgeclipseswtswterror-no/](https://developer.ibm.com/answers/questions/378241/what-is-the-cause-of-the-orgeclipseswtswterror-no/)

> 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:

```auto
-startup
../Eclipse/plugins/org.eclipse.equinox.launcher_1.3.201.v20161025-1711.jar
--launcher.library
../Eclipse/plugins/org.eclipse.equinox.launcher.cocoa.macosx.x86_64_1.1.401.v20161122-1740
-data
config
-vm
../../Contents/Eclipse/jre/Contents/Home/jre/lib/jli/libjli.dylib
-vmargs
-Xms256m
-Xmx4048m
-XstartOnFirstThread
-Dorg.eclipse.swt.internal.carbon.smallFonts

```

Why not changing: `-Xms4048m` → `-Xms8192m`

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<div class="post-metadata">

**Author:** ![Dave\_Evers](https://dub1.discourse-cdn.com/katalon/user_avatar/forum.katalon.com/dave_evers/32/435_2.png) [@Dave\_Evers](https://forum.katalon.com/u/Dave_Evers)\
**Post date:** [December 15, 2018, 12:32am UTC](https://forum.katalon.com/t/experiencing-frozen-katalon-studio-sessions/15519/3 "2018-12-15T00:32:28Z")

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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.

Cheers,  
Dave

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**Author:** ![system](https://europe1.discourse-cdn.com/katalon/original/3X/d/5/d55596ab02785a255798e87ede769734747b30c4.svg) [@system](https://forum.katalon.com/u/system)\
**Post date:** [December 15, 2019, 12:32am UTC](https://forum.katalon.com/t/experiencing-frozen-katalon-studio-sessions/15519/4 "2019-12-15T00:32:30Z")

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Closed on December 15, 2019, 12:32am UTC

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