Using multiple COPY INTO inside a transaction from Java

Hi, We are already using the COPY INTO bulk insert from Java via BufferedMCLWriter, as you suggest in your recipes bookhttps://www.monetdb.org/Documentation/Cookbooks/SQLrecipes/LoadingBulkData, and based in the examplehttp://dev.monetdb.org/hg/MonetDB/file/tip/java/example/SQLcopyinto.java you provided. I understood that each COPY INTO behaves as a single transaction. My question now is if there is a way to group two or more COPY INTO and make them behave as a single transaction. Thank you Gerardo