Cynthia ,, thanks for the response ...
When I originally moved olddb.dbf , after confirming that the move was ok, I did delete the original copy of the file.... df -k shows that no space has been released on /ora8 as a result of that delete.
SQL> select name from v$datafile;
/ora8/m01/app/oracle/oradata/ora8/system01.dbf
/ora8/m01/app/oracle/oradata/ora8/tools01.dbf
/ora8/m01/app/oracle/oradata/ora8/rbs01.dbf
/ora8/m01/app/oracle/oradata/ora8/temp01.dbf
/ora8/m01/app/oracle/oradata/ora8/users01.dbf
/ora8/m01/app/oracle/oradata/ora8/indx01.dbf
/ora8/m01/app/oracle/oradata/ora8/drsys01.dbf
/ora8/m02/oradata/ora8/msds.dbf
/web/dp32/tmpdata/dp32.dbf << this used to be on /ora8
/ora8/m02/oradata/ora8/monitor.dbf
/ora8/m02/oradata/ora8/dp1dev01.dbf
and
[nsadmin@digitalp1 aol]$ df -k
Filesystem 1k-blocks Used Available Use% Mounted on
/dev/sda5 5044156 4767468 20456 100% /ora8 <<<<
/dev/sda6 5044156 3479160 1308764 73% /web
