Datafile not showing in PSAP<SID>640 tablespace

Hi All,

In our quality server we are having we are having datafile PSAPDQT & PSAPDQT640,

in PSAPDQT sapdata 1 & 2 not showing remaining datafiles are showing, but in PSAPDQT640 its showing all the datafiles sapdata1,2,3 &4., in transaction DB02--> datafiles/temp files.

This is on ECC 5 on HP-HX, with oracle 10g.

Kindly suggest what may be the issue and how to resolve.

Thanks & Regards!!