Oracle® Database 11g / 12c / 18c error codes ORA-00037: cannot switch to a session belonging to a different server group

ORA-00037: cannot switch to a session belonging to a different server group

Oracle Error Code: ORA-00037

Cause: An attempt was made to switch to a session in a different server group. This is not allowed.

Action: Make sure the server switches to a session that belongs to its server group.