How to fix the Oracle error ORA-15245: ASM disk string is already being brought online?

In this post, you’ll learn more about the Oracle ErrorORA-15245: ASM disk string is already being brought online with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-15245: ASM disk string is already being brought online

Reason for the Error ORA-15245: ASM disk string is already being brought online

An attempt was made to bring online a disk that is already being brought online.

How to fix the Error ORA-15245: ASM disk string is already being brought online ?

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

Change the ONLINE statement to exclude the disk.