Lost space on file system

Hi everybody,

I got a problem on my SUN server in Solaris 9. I'll try to explain, if somebody could help me.

I have mounted some volumes in RAID 0+1, that is stripped slices and then mirror. To be clear the result of metastat d80 is as follow :
d80: Mirror
Submirror 0: d81
State: Okay
Submirror 1: d82
State: Okay
Pass: 1
Read option: roundrobin (default)
Write option: parallel (default)
Size: 141446400 blocks (67 GB)

d81: Submirror of d80
State: Okay
Size: 141446400 blocks (67 GB)
Stripe 0: (interlace: 128 blocks)
Device Start Block Dbase State Reloc Hot Spare
c1t2d0s6 0 No Okay Yes
c1t3d0s6 0 No Okay Yes

d82: Submirror of d80
State: Okay
Size: 141446400 blocks (67 GB)
Stripe 0: (interlace: 128 blocks)
Device Start Block Dbase State Reloc Hot Spare
c1t4d0s6 0 No Okay Yes
c1t5d0s6 0 No Okay Yes

So the global size of the volume is 67 GB.
During the normal work this volume has been filled to 95%. To make space I decided to drop a large Oracle database (26 GB). The files have been deleted successfully, but when I run the df -k command it shows always the volume full at 95%.
Now when I try to create files on this volume it fails with "file system full".
I don't know why the df command didn't see the rm of the database (problem with large files ?).
Does anybody know how I can recover this space ?
Thanks in advance for your answers.
Alain

check if the poracle processes are still running.
running process doesn't return the disk space.
In the worst scenario, you need a reboot

No I had stopped the oracle base before to suppress the files.
Are you sure that a reboot will free the disk space ?