Oracle® Database 11g / 12c / 18c error codes ORA-32829: Messaging Gateway agent cannot be shut down while it is starting

ORA-32829: Messaging Gateway agent cannot be shut down while it is starting

Oracle Error Code: ORA-32829

Cause: An attempt was made to shut down the Messaging Gateway agent when it is in the process of starting and initializing.

Action: Wait for MGW_GATEWAY view to show a RUNNING status and retry the operation. CLEANUP_GATEWAY may need to be issued to reset the gateway state if the agent fails to start after a reasonable time period.