Katalon takes time to import json collection from postman

Hi Katalon Community,

I’m currently experiencing an issue with importing a larger Postman JSON collection file into Katalon Studio. I have two JSON collection files:

  1. A smaller file without folders/subfolders containing 12 requests, which imports quickly.
  2. A larger file structured with folders and subfolders, containing over 100 requests. However, when I attempt to import this file, Katalon Studio seems to hang indefinitely, remaining on the import screen for over 15 minutes without progressing.

Has anyone encountered a similar issue with importing structured collections of this size? Are there specific settings or optimizations I could apply to make this process more efficient?

Thank you in advance for any insights or recommendations!


im stuck here like over a 15minutes

1 Like

Possibly “OutOfMemoryError” occured behind the scene.

You can try allocating more memory to Katalon Studio so that it can process large data.

On Windows, open the katalon.ini file in the folder that contains Katalon Studio application installed. For example: C:\Users\keenanhashim\Downloads\Katalon_Studio_Windows_64-8.5.2\katalon.ini

Possibly you will find katalon.ini file like this:

-startup
plugins/org.eclipse.equinox.launcher_1.6.400.v20210924-0641.jar
--launcher.library
plugins/org.eclipse.equinox.launcher.win32.win32.x86_64_1.2.700.v20221108-1024
-data
@noDefault
-vmargs
-XX:+UseG1GC
-XX:+UseStringDeduplication
-Xms256m
-Dfile.encoding=utf-8
--add-opens=java.base/java.lang=ALL-UNNAMED
--add-opens=java.base/java.util=ALL-UNNAMED
-Xmx2048m

Change the last line to

-Xmx4096m

or

-Xmx8192m

or even larger size you can set, as much as your machine’s physical MEMORY allows.

Once you finished editing katalon.ini, you want to stop Katalon Studio and restart it


If this does not help, you should request Katalon’s official support. I suppose their software is designed to hold the entire image of a large JSON in memory so that it can not process the bulky JSON you tried. In order to be capable to meet your need, a serious software design change might be required.

i already tried this, but my katalon still can not manage to import the JSON

How about this?

or

-Xmx16g

if your PC has enough physical memory

Please share the Error log. In the Error log, you will find messages that tells you the true reason.

issue resolved ??