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Configuring the start mode of flows and applications at development time
You can configure the run state of message flows and applications when you deploy or when you restart an execution group.
In previous versions of WebSphere® Message Broker, when you deploy a new message flow to an execution group, the flow is started automatically. If you deploy an existing message flow to an execution group, the existing run state of the flow is maintained. Therefore, if the flow was stopped before you deployed it, it remains stopped when you deploy it. This run state is also maintained when you restart the execution group.
From WebSphere Message Broker Version 8.0 onwards, you can set the default behavior of message flows and applications when you deploy or restart an execution group. For example, you might have a message flow that creates resources that are required by other message flows. Therefore, you might want to start one message flow before all others when the flows are deployed, or when the broker, execution group, or containing application are started. You can set one message flow to start automatically, then set other message flows to require a manual restart.
- Maintained
- This value is the default, and indicates that the flow or application is started when deployment is complete, and remains running until a stop command is issued. After a stop command has been issued, the flow or application remains stopped until a start command is issued. The state of the flow or application remains unchanged after redeployment, or after the broker, execution group, or containing application has been restarted.
- Manual
- This value indicates that the flow or application must always be started manually after deployment or after the broker, execution group, or containing application has been restarted. The flow or application is in stopped state after deployment or redeployment, and after the broker, execution group, or containing application is restarted, even if the flow or application was running before the deployment or restart.
- Automatic
- This value indicates that the flow or application is always started automatically after deployment, redeployment, or after the broker, execution group, or containing application is restarted.
To indicate how a flow or application is started after deployment, or after the broker, execution group, or containing application is restarted, complete the following steps.