How to fix the Oracle error ORA-15063: ASM discovered an insufficient number of disks for diskgroup “string”?

In this post, you’ll learn more about the Oracle ErrorORA-15063: ASM discovered an insufficient number of disks for diskgroup “string” with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

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

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

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

How to fix the Error ORA-15063: ASM discovered an insufficient number of disks for diskgroup “string” ?

You can fix this error in Oracle by following the below steps

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.