I don't think 4GB is exceptionally large. The dataset we were using was well over 16 GB on a non-distributed server. Check if the LASR server has any data that can be removed so your dataset has more space to work. Many times I see people load multiple copies of the same dataset with a few minor changes. They don't remove the downlevel datasets - so you will see Test_data_V1, Test_Data_v2, Test_data_v3, etc. You might see if you can reduce the size of the dataset. Reduce the size of the character fields. Use PROC CONTENTS to review the length. For instance, we had a field that had survey responses that was set to a length of 50 and the responses were "Yes" and "No". We reset that size to 8. Can any columns be removed? For instance, some people have multiple date fields and the only difference is the formatting. Here's a blog post where I talk about how to duplicate the values and use formatting inside SAS VA. We were able to reduce the dataset size nearly in half using this techniques.
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