On a db2 v7.2 installation on Win2k, i am getting the following error when i try to execute any SQL command from the db2 command line. I get the error even on a simple statement like "select count(*) from tableA"

DB21034E The command was processed as an SQL statement because it was not a valid Command Line Processor command. During SQL processing it returned:
SQL0901N The SQL statement failed because of a non-severe system error. Subsequent SQL statements can be processed. (Reason "".) SQLSTATE=58004

The reason does not say anything. What could be the problem?