Oracle Error ORA-15063: ASM discovered an insufficient number of disks for diskgroup “string”

Oracle Error Message

ORA-15063: ASM discovered an insufficient number of disks for diskgroup “string”

Reason for the Error

ASM was unable to find a sufficient number of disks belonging to the diskgroup to continue the operation.

Solution

Check that the disks in the diskgroup are present and functioning, that the owner of the ORACLE binary has read/write permission to the disks, and that the ASM_DISKSTRING initialization parameter has been set correctly. Verify that ASM discovers the appropriate disks by querying V$ASM_DISK from the ASM instance.