How to fix the Oracle error ORA-15017: diskgroup “string” cannot be mounted?

In this post, you’ll learn more about the Oracle ErrorORA-15017: diskgroup “string” cannot be mounted with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-15017: diskgroup “string” cannot be mounted

Reason for the Error ORA-15017: diskgroup “string” cannot be mounted

The disk group could not be mounted by the ASM instance either of an IO error or due to other reasons explained in alert log or trace files.

How to fix the Error ORA-15017: diskgroup “string” cannot be mounted ?

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

Check for additional errors reported. Correct the error and retry the operation.