ORA-16002: database or pluggable database already open for read/write access by another instance

ORA-16002: database or pluggable database already open for read/write access by another instance


Cause:


The database or pluggable database has been opened for read/write access by another instance, and cannot be opened for read-only access by this instance.



Action:


This instance must be opened for read-only access, or all other instances must first be shut down and reopened for read/write access.