Hello, I'm testing MonetDB with Star Schema Benchmark on a Linux Ubuntu box. I'm able to run all queries except 4.1, 4.2 and 4.3 I've tested with Scale Factor of 1, 5 and 10, and with 1, 3 and 7Gb RAM, and in all situations I gets this error: java.sql.SQLException: MALException:algebra.join:GDK reported error. ERROR: HEAPextend: failed to extend to 954941288 for 15/1560tail at nl.cwi.monetdb.jdbc.MonetConnection$ResponseList.executeQuery(MonetConnection.java:2208) at nl.cwi.monetdb.jdbc.MonetConnection$ResponseList.processQuery(MonetConnection.java:1967) at nl.cwi.monetdb.jdbc.MonetStatement.internalExecute(MonetStatement.java:434) at nl.cwi.monetdb.jdbc.MonetStatement.execute(MonetStatement.java:347) at nl.cwi.monetdb.jdbc.MonetStatement.executeQuery(MonetStatement.java:451) at test.Main.test(Main.java:188) at test.Main.main(Main.java:158) With 1 Gb of RAM it could be lack of memory but not with 7Gb and a SF of 1. Any idea why this occours? Thanks. Rui Anastácio