Oracle® Database 11g / 12c / 18c error codes ORA-32828: Messaging Gateway agent must be running

ORA-32828: Messaging Gateway agent must be running

Oracle Error Code: ORA-32828

Cause: An operation was attempted that requires the Messaging Gateway agent to be started and responsive.

Action: Issue STARTUP, wait for MGW_GATEWAY view to show a RUNNING status, and retry the operation.