Hi, Have a basic doubt. Who owns ASM disk group? Oracle user or Grid user? With which user do we create datafiles in disk group? How do we check the owners of ASM diskgroup in ASMCMD? In my RAC DB I am getting no rows for below query.Kindly help me. SQL> select * from V$ASM_USER; no rows selected SQL> select NAME,GROUP_NUMBER from V$ASM_DISKGROUP; NAME GROUP_NUMBER ------------------------------ ------------ ASM 1 DATA 2 IDXDG 3 REDODG 4 ASMCMD> lsgrp DATA DG_Name Grp_Name Owner ASMCMD> lsgrp REDODG DG_Name Grp_Name Owner ASMCMD> lsusr -G DATA User_Num OS_ID OS_Name Thanks and Regards, Nisha Mohan.A **************** CAUTION - Disclaimer ***************** This e-mail contains PRIVILEGED AND CONFIDENTIAL INFORMATION intended solely for the use of the addressee(s). If you are not the intended recipient, please notify the sender by e-mail and delete the original message. Further, you are not to copy, disclose, or distribute this e-mail or its contents to any other person and any such actions are unlawful. This e-mail may contain viruses. Infosys has taken every reasonable precaution to minimize this risk, but is not liable for any damage you may sustain as a result of any virus in this e-mail. You should carry out your own virus checks before opening the e-mail or attachment. Infosys reserves the right to monitor and review the content of all messages sent to or from this e-mail address. Messages sent to or from this e-mail address may be stored on the Infosys e-mail system. ***INFOSYS******** End of Disclaimer ********INFOSYS*** -- //www.freelists.org/webpage/oracle-l