Solaris

oracle@test # df -h /u02
Filesystem size used avail capacity Mounted on
/dev/dsk/emcpower0a 492G 370G 117G 76% /u02


oracle@test # du -hs /u02
368G /u02

oracle@test # ls -sl /proc/*/fd/* | sort -n | tail -20
/proc/3421/fd/255: No such file or directory
/proc/3421/fd/3: No such file or directory
/proc/3421/fd/4: No such file or directory
173360 --w------- 1 oracle oinstall 88695235 Apr 29 12:18 /proc/2100/fd/6
173360 --w------- 1 oracle oinstall 88695235 Apr 29 12:18 /proc/2100/fd/7
173360 --w------- 1 oracle oinstall 88695235 Apr 29 12:18 /proc/2125/fd/6
173360 --w------- 1 oracle oinstall 88695235 Apr 29 12:18 /proc/21358/fd/12
173360 --w------- 1 oracle oinstall 88695235 Apr 29 12:18 /proc/21358/fd/6
173360 --w------- 1 oracle oinstall 88695235 Apr 29 12:18 /proc/21358/fd/7
173360 --w------- 1 oracle oinstall 88695235 Apr 29 12:18 /proc/25906/fd/12
173360 --w------- 1 oracle oinstall 88695235 Apr 29 12:18 /proc/25906/fd/6
173360 --w------- 1 oracle oinstall 88695235 Apr 29 12:18 /proc/25906/fd/7
173360 --w------- 1 oracle oinstall 88695235 Apr 29 12:18 /proc/26083/fd/6
173360 --w------- 1 oracle oinstall 88695235 Apr 29 12:18 /proc/26083/fd/7
180496 --w------- 1 oracle oinstall 92350748 Apr 29 19:13 /proc/2107/fd/3
195264 --w------- 1 oracle oinstall 99915177 Apr 28 08:06 /proc/16294/fd/1
195264 --w------- 1 oracle oinstall 99915177 Apr 28 08:06 /proc/16294/fd/2
195264 --w------- 1 oracle oinstall 99915177 Apr 28 08:06 /proc/2235/fd/1
195264 --w------- 1 oracle oinstall 99915177 Apr 28 08:06 /proc/2235/fd/2
195264 --w------- 1 oracle oinstall 99915177 Apr 28 08:06 /proc/2235/fd/3
195264 --w------- 1 oracle oinstall 99915177 Apr 28 08:06 /proc/27773/fd/1
195264 --w------- 1 oracle oinstall 99915177 Apr 28 08:06 /proc/27773/fd/2
528384 --w------- 1 oracle oinstall 270381606 Apr 29 19:13 /proc/16294/fd/8


Please pardon my ignorance. As it's a production server, please tell me that is it safe to run the following commands:
mount -p | grep /u02
mount -v | grep /u02

Thanks and regards and I am so indebted.

Hmm, df and du agree so what is the problem you are trying to fix ??

The problem is that I have calculated the size of directories present in /u02, and they make up total of 110GB, where as the df command shows that the total used space is 369G.

I am trying to find out where the 259G space is?

regards

Then please explain the method you used to calculate it. "du" reports a size equal to 368GB, not 110GB.