Question about how a RAC database connects to ASM

I have recently installed Grid Clusterware 11.2.0.1 on an IBM PSeries server running AIX. Today, I installed the Oracle database software, version 11.2.0.1, but when I try to start the database, I get an error message: ORA-01031: insufficient privileges.
I can log in to the ASM instance using "sys as sysdba" but when I try to log in to ASM as "sys as sysasm" then I get the same error message.
Obviously I have configured something incorrectly. I would appreciate any help locating the proper documentation so I can correct my errors. All advice is greatly appreciated. Thank you.

Hi,
Regarding the AIX group "asmdba", we do not have separate administrators to handle the administration of ASM in 11g. I read in the documentation (Grid Infrastructure Installation Guide) that if separate administrators are not wanted for ASM and the database(s), then "asmdba" group is optional. Would you recommend creating this group anyway?I agree to create OS group asmdba it's mandatory only if you are using different user to GUI Install.
But it's a question of organization of the environment. Each group will designate different kinds of permissions and different roles.
So, Although the ASM come built into Oracle Database (actually 11.2 and higher Oracle has created a new layer called Grid Infrastructure), Clusterware, ASM and Database products are completely different for different purposes. With the evolution of these products believe that the tendency is they have their own installation and administration. Yet all will work together.
Create a group asmdba will not impact the current environment, only will help keep the environment more organized to the future. Look on the bright side, if one day you need of group asmdba, you does not need to re-configure the environment.
Correcting my previous post the group that has permission to access as SYSASM privilege is asmadmin instead of asmdba.
Cheers,
Levi Pereira

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Question about how a RAC database connects to ASM

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