ORA-36188: (XSAGGR16) AGGREGATE read a value less than 1 out of COUNTVAR variable workspace object. Either the values of the COUNTVAR variable are stored improperly, or there is problem in AGGREGATE. If no one has modified the values in this COUNTVAR, contact
Cause: Either someone improperly changed the COUNTVAR variable, or AGGREGATE has an error
Action: Set the COUNTVAR variable to NA before starting AGGREGATE. If you previously set the COUNTVAR variable to NA, then contact Oracle OLAP technical support
https://support.oracle.com/
http://www.oracle.com/