This parameter defines additional directories where Oracle trace files are to be deleted. Oracle 11g trace files are only removed from the following directories and their subdirectories:
<diagnostic_dest>/diag/rdbms/<DB_name>/<INST_NAME>
When this parameter is set, Oracle 11g trace files are also removed from the specified directories.
cleanup_ora_dir = (<ora_trace_dir1>, <ora_trace_dir2>, ...)