Hi Srinivasan Vinayagam,
I don´t want to change that directory. Sapinst created a usr/sap directory in the Drive where i put de database files.
This "usr/sap" directory contains CCMS, SAPSID, PRFCLOG subdirectories.
I found this http://scn.sap.com/thread/3550316. The difference is that there is no option in my sapinst steps for DB instance that let me choose the drive.
Maybe this are just "dumb directories" and i can delete it safely.
Regards,
A.