Hi All ! Please find the attached Decision table which contains 26000 records. It is giving Heap space error. When I tested with few hundred records inn the tale it works fine. Though my Eclipse helios shows ample amount of memory i.e. 426 M. Shall I increase more....?? If so, how.....?? Thanks !! http://drools.46999.n3.nabble.com/file/n4017806/Premium_Rates.csv Premium_Rates.csv http://drools.46999.n3.nabble.com/file/n4017806/error.png -- View this message in context: http://drools.46999.n3.nabble.com/getting-HEAP-space-error-when-decision-... Sent from the Drools: User forum mailing list archive at Nabble.com.