In this post, you’ll learn more about the Oracle ErrorORA-01102: cannot mount database in EXCLUSIVE mode with the details on why you receive this error and the possible solution to fix it.
Oracle Error Description
ORA-01102: cannot mount database in EXCLUSIVE mode
Reason for the Error ORA-01102: cannot mount database in EXCLUSIVE mode
Some other instance has the database mounted exclusive or shared.
How to fix the Error ORA-01102: cannot mount database in EXCLUSIVE mode ?
You can fix this error in Oracle by following the below steps
Shutdown other instance or mount in a compatible mode.