Assigning Manager a Port for Local Communication
The Manager process in each Oracle GoldenGate installation requires a dedicated port for communication between itself and other local Oracle GoldenGate processes. To specify this port, use the PORT parameter in the Manager parameter file. Follow these guidelines:
                  
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                        The default port number for Manager is 7809. You must specify either the default port number (recommended, if available) or a different one of your choice. 
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                        The port must be unreserved and unrestricted. 
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                        If more than one instance of Oracle GoldenGate exists on the system, then each Manager must use a different port number. 
See PORT in Reference for Oracle GoldenGatefor more information.