In this post, you’ll learn more about the Oracle ErrorORA-15202: cannot create additional ASM internal change segment with the details on why you receive this error and the possible solution to fix it.
Oracle Error Description
ORA-15202: cannot create additional ASM internal change segment
Reason for the Error ORA-15202: cannot create additional ASM internal change segment
The mount of a diskgroup by an additional instance in a RAC cluster required more space for internal use by ASM than was available in the diskgroup.
How to fix the Error ORA-15202: cannot create additional ASM internal change segment ?
You can fix this error in Oracle by following the below steps
Delete unused files from the diskgroup or add additional disks to the diskgroup and retry the operation.