Hi, I get errors, when I try to use the query history feature as described here: http://www.monetdb.org/Documentation/Cookbooks/SQLrecipies/History After history is set to true, I get the following error message every time I execute a query: invalid/unknown response from server, ignoring output ? = 0:0 profiler.setFootprintFlag(); ? = 0:0 profiler.setMemoryFlag(); ? = 0:0 inblock := profiler.getDiskReads(); ? = 0:0 oublock := profiler.getDiskWrites(); ? = 0:0 xtime := alarm.usec(); (remaining output omitted, use \fraw to examine in detail) This only stops if I set history back to false. I'm using the latest MonetDB 11.5.3 on OS X 10.6. Below is an example session. Cheers, Viktor -----8< sample session >8----- $ mclient -d demo -u monetdb password: Welcome to mclient, the MonetDB/SQL interactive terminal (Aug2011-SP1) Database: MonetDB v11.5.3, 'demo' Type \q to quit, \? for a list of available commands auto commit mode: on sql>set history=true; sql>select 1; invalid/unknown response from server, ignoring output ? = 0:0 profiler.setFootprintFlag(); ? = 0:0 profiler.setMemoryFlag(); ? = 0:0 inblock := profiler.getDiskReads(); ? = 0:0 oublock := profiler.getDiskWrites(); ? = 0:0 xtime := alarm.usec(); (remaining output omitted, use \fraw to examine in detail) sql>select * from queryHistory; invalid/unknown response from server, ignoring output ? = 0:0 profiler.setFootprintFlag(); ? = 0:0 profiler.setMemoryFlag(); ? = 0:0 inblock := profiler.getDiskReads(); ? = 0:0 oublock := profiler.getDiskWrites(); ? = 0:0 xtime := alarm.usec(); (remaining output omitted, use \fraw to examine in detail) sql>set history=false; invalid/unknown response from server, ignoring output ? = 0:0 profiler.setFootprintFlag(); ? = 0:0 profiler.setMemoryFlag(); ? = 0:0 inblock := profiler.getDiskReads(); ? = 0:0 oublock := profiler.getDiskWrites(); ? = 0:0 xtime := alarm.usec(); (remaining output omitted, use \fraw to examine in detail) sql>select * from queryHistory; +---------+----------------------------+---------+-----------------------------+-------+----------+ | id | defined | name | query | parse | optimize | +=========+============================+=========+=============================+=======+==========+ | 1035769 | 2011-10-18 15:51:36.000000 | monetdb | select 1; | 236 | 208 | | 1035885 | 2011-10-18 15:51:47.000000 | monetdb | select * from queryhistory; | 300 | 860 | | 1036047 | 2011-10-18 15:51:50.000000 | monetdb | set history=false; | 130 | 466 | +---------+----------------------------+---------+-----------------------------+-------+----------+ 3 tuples (1.613ms) sql>