ASM metadata file number 10 is ASM user directory and ASM file number 11 is ASM group directory. These are supporting structures for ASM file access control feature.
ASM file access control can be used to restrict file access to specific ASM clients (typically databases), based on the operating system effective user identification number of a database home owner.
This information is externalized via V$ASM_USER, V$ASM_USERGROUP and V$ASM_USERGROUP_MEMBER views.ASM users and groups
To make use of ASM file access control feature, we need to have the operating system users and groups in place. We would then add them to (more...)