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6.10.3. Overriding Persisted Configuration Settings

The settings in the Java backing store and in the agent-configuration.xml file for the agent can be overridden using the -D option, the configuration parameter name, and the new value when the agent is started.
For example, to set a temporary value for how long the agent waits at startup to detect the JBoss ON server (rhq.agent.wait-for-server-at-startup-msecs), pass this argument with the start command:
agentRoot/rhq-agent/bin/ -Drhq.agent.wait-for-server-at-startup-msecs=90000