Hello, I am trying to execute in parallel a few queries in MonetDB. I have read in the documentation that Monet uses the OCC transaction model so read operations should not block the table. I have 3 CREATE TABLE queries that read from the same source table, I launch 3 different mclient processes and launch one query on each client. The queries execute in parallel as expected, I can see them running in sys.queue(). The first query that completes, creates the table and commits fine. When the other two queries finish their job I can see the message “operation successful” but right after the client prints "COMMIT: transaction is aborted because of concurrency conflicts, will ROLLBACK instead”. What am I doing wrong? Apart from the newly created table, I did non write anything to the db so it should work fine. Any suggestion would be much appreciated, Thanks, Stefano