Check with your local SAS Administrator about possibly increasing the -MEMSIZE parameter in the SAS config file (sasv9.cfg) from the default value of 2G.    If you are trying to chain 4 items with the Association node using this particular dataset, you may still get the same error even with a higher memsize. Your log shows a high number of potential item sets. Check to see how these differ from the runs with your other datasets that ran successfully.   Before changing the MEMSIZE, first try setting the Maximum Items property under Association to 2 instead of the default 4 and see if the node will complete. Check the results to see if they are what you expect and make sense.   Then, try increasing the minimum thresholds of the Association properties to get results with more items in the chain. ... View more