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Oracle® Database 11g / 12c / 18c error codes ORA-32845: Messaging Gateway agent is already running
ORA-32845: Messaging Gateway agent is already running
Oracle Error Code: ORA-32845
Cause: An attempt was made to start the Messaging Gateway agent when an agent instance is already running.
Action: Shut down the Messaging Gateway agent currently running, verify the agent process has been terminated, and start the Messaging Gateway agent.