For Zero Downtime, you run Oracle GoldenGate Manager and five processes in each environment. Therefore, you need six open ports on the active environment and six open ports on the passive environment. By default, the Oracle GoldenGate port range is 7809-7820.

For information about specifying ports for remote network communications, see the following topics in the

Oracle® GoldenGate Administering Oracle GoldenGate for Windows and UNIX

:

Maintaining Ports for Remote Connections through Firewalls: https://docs.oracle.com/goldengate/1212/gg-winux/GWUAD/wu_manager.htm#GWUAD142
Creating the Manager Parameter File: https://docs.oracle.com/goldengate/1212/gg-winux/GWUAD/wu_manager.htm#GWUAD145