Unix O/S block size

Hi all, is there a unix command that shows the o/s blocksize. I want to know this so that i can size my oracle blocksize accordingly. Thx everybody

df -g

df -g . | grep block
/export/home (/dev/dsk/c0t0d0s6 ): 8192 block size

use the command mkfs -m /dev/dsk/c?t?d?s?
look at the bsize value (you need to be root to run this)

It seems that you are only talking about ufs on solaris?

Let me add someother things:
on linux, use tune2fs -l /dev/sdxx

On hpux , solaris, and if using vxfs, you can use fstyp - /dev/your_device to check t he blocksize.
On these filesystem, the default block size is 8k.

And on AIX, the default blocksize is 4K.