compile dba_data_files

Hi all ,

it's on 9.2.0.6.

SQL > desc dba_data_files
ERROR:
ORA-04043: object dba_data_files does not exist

so one of my friend did a

SQL> alter view dba_data_files compile ;

though it erred out saying "unique key violation in OBJ$" , the next time

SQL > desc dba_data_files

worked .

my question is , can we compile data dictionary views like this ? OR it is to be avoided strictly ? does oracle support this ?

Please advice.

TIA.
Prem

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