How come I can't query?
DBA_AUDIT_TRAIL,DBA_AUDIT_OBJECT

In SQLPLus I can..

But in VFP...
h=SQLCON()
?sqlexec(h,'select * from sys.USER_AUDIT_TRAIL')
?sqlexec(h,'select * from USER_AUDIT_TRAIL')

Both above statements give error:
connectivity error:
Unable to get specfic error message.
Driver is probably out of resources.

Using MS Driver for Oracle.