Hi... AFAIK stats on dictionary objects are supported in 10g. I would consider rerunning (as sys) the catalog.sql to correct dba_data_files view. That is much safer approach, IMHO. Cheers! - Kirti --- shirish@xxxxxxxxxxxxxx wrote: --------------------------------- Oracle does supports collecting stats on dict objects but in your case it looks like that you have some issues withobj$ does you dba_objects works fine ? better is to do 1)analyze the obj$ 2) if it fails then take a 10046 or 3)set a errorstack for 4043 in case obj$ is corrupted then it you need to patch the dict orrestore recover from a good known backup ..... Regards Shirish -------- Original Message -------- Subject:compile dba_data_files From: Prem<premjhere@xxxxxxxxx> Date: Thu, July 07, 2005 7:38 am To:oracle-l <oracle-l@xxxxxxxxxxxxx> Hi all , it's on9.2.0.6. 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 iterred out saying "unique key violation in OBJ$" , the next time SQL > desc dba_data_files worked . my questionis , can we compile data dictionary views like this ? OR it is to beavoided strictly ? does oracle support this ? Pleaseadvice. TIA. Prem -- //www.freelists.org/webpage/oracle-l--http://www.freelists.org/webpage/oracle-l ____________________________________________________ Sell on Yahoo! Auctions ? no fees. Bid on great items. http://auctions.yahoo.com/ -- //www.freelists.org/webpage/oracle-l