If you need to set your TNSNAMES.ora file in the new GoldenGate 21c Microservices, how do you find the location?
Simple, In the service manager, click on your deployment (West in this case below) and click on the configuration.
Note that when you create your credential, instead of using the tnsnames.ora in the TNS_ADMIN location, you can also use EZconnect.
e.g: c##ggadmin/<password>@<host>:<port>/<service>
