In this post, you’ll learn more about the Oracle ErrorORA-29742: incompatible Instance Membership Recovery protocol among instances with the details on why you receive this error and the possible solution to fix it.
Oracle Error Description
ORA-29742: incompatible Instance Membership Recovery protocol among instances
Reason for the Error ORA-29742: incompatible Instance Membership Recovery protocol among instances
The selected Instance Membership Recovery protocol was not compatible with other running instances in the cluster database.
How to fix the Error ORA-29742: incompatible Instance Membership Recovery protocol among instances ?
You can fix this error in Oracle by following the below steps
Check the Instance Membership Recovery initialization parameters of all instances to ensure their consistency.