Tag Archives: memory-analyzer

Eclipse Memory Analyzer: Solution to Use the -data parameter Exception

If you launch Eclipse MAT and get following error

java.lang.IllegalStateException: The platform metadata area could not be written: /private/var/folders/9q/zhpkyd3s4y9d5t1nv_5hszww0000gp/T/AppTranslocation/DF264CA5-4EEF-4916-A3FA-881B111294E5/d/mat.app/Contents/MacOS/work/.metadata.  By default the platform writes its content
under the current working directory when the platform is launched.  Use the -data parameter to
specify a different content area for the platform.

Then you should open the MemoryAnalyzer.ini in your favorite editor and add the -data argument as shown below.

The location of MemoryAnalyzer.ini depends on your platform. If you are using Mac, then it is inside the app folder like mat.app/Contents/Eclipse/MemoryAnalyzer.ini

-startup
../Eclipse/plugins/org.eclipse.equinox.launcher_1.5.0.v20180512-1130.jar
-data
/Users/shekhargulati/dev/tmp/mat
--launcher.library
../Eclipse/plugins/org.eclipse.equinox.launcher.cocoa.macosx.x86_64_1.1.700.v20180518-1200
-vmargs
-Xmx4096m
-Dorg.eclipse.swt.internal.carbon.smallFonts
-XstartOnFirstThread