"valid workload queries not found"
*Cause: None of the specified queries can be successfully parsed. The error
may come from many sources: SQL syntax error, the owner
specified by the load_workload subprograms do not match the
real user who generates the SQL statement
*Action: Only load valid SQL statements into the advisor repository. Make
sure the statements can be parsed with privilege of the owner
as specified in the owner parameter of the load_workload()