Error from installer (Linux)

During installation I get the following error message:

A permission denied error occurred while trying to make the directory '/usr/local/oracle/ora01/app/oracle/8.0.5/orainst'. (Operation not permitted.) Would you like to retry the operation, ignore the error, or allow the error to be processed by the Installer?

When I then hit the "process" button, I get the notification:

orainst.ins(229): PERMISSION_DENIED while making directory /usr/local/oracle/ora01/app/oracle/8.0.5/orainst

What is the problem? Every thing under /usr/local/oracle is owned by the user oracle (group dba), so the installer should have the rights to create the directory.

Can anyone help me, please?

Thanks,

        Ralf.
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##     Ralf Schneider                   ##
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