After heavy or prolonged use of SAS Data Integration Studio 4.2, the user interface might become sluggish and ultimately unresponsive. Closing and re-opening SAS Data Integration Studio usually restores performance.

To work around this issue, modify the SAS Data Integration Studio client properties file, distudio.ini, and adjust the Java memory settings.

1. Navigate to the SAS Data Integration Studio installation folder on your client machine. The default installation location for the product is C:\Program Files\SASHome\SASDataIntegrationStudio\4.2.
2. Make a copy of the file distudio.ini and save it (without modification) as a backup file.
3. Using a text editor, open the file distudio.ini.
4. Modify the JavaArgs_1 parameter and increase the maximum Java heap size (-Xmx) from 512m (the default value) to 1024m. Here is how the line should appear after the update:
   JavaArgs_1=-Xmx1024m

Caution: If you set the maximum Java heap size (-Xmx) to a value that exceeds the maximum available memory on your machine, the SAS Data Integration Studio client will not launch. If this occurs, edit the distudio.ini file and reduce the setting of this option until the client launches successfully.

5. Add an additional JavaArgs parameter that sets a higher maximum value for Java permanent generation heap space (-XX:MaxPermSize). Here is how the line should appear after the update:
   JavaArgs_13=-XX:MaxPermSize=128m
6. Save the distudio.ini file.

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