/sys$common/syshlp/helplib.hlb DCE_RPC, idl, ARGUMENTS, -trace  *Conan The Librarian (sorry for the slow response - running on an old VAX)

   -trace value

   Enables event logging.

   You can specify one of the following values for the value argument:

       all    Log all events.

       none   Disable all previously specified trace options.

       calls  Log events relating to start and end of all RPC calls.

       context
              Log events relating to context handle creation, deletion,
              and rundown.

       errors
              Log errors.

       misc   Log all miscellaneous events.

       log_manager
              Enable command interface support which allows modification
              at runtime of event logging options.