To specify proxy information:
Log in to Oracle Enterprise Manager.
Navigate to the EM MBean browser Weblogic Domain > System MBean Browser.
Navigate to reports server mbean
Standalone server - oracle.reports.serverconfig:type=ReportsServer,name=rwserver-<componentName>
Inprocess server - oracle.reportsApp.config:Location=<managedServername>,name=rwserver,type=ReportsApp,Application=reports,ApplicationVersion=12.2.1.3
In child mbean ProxyInfo you can set proxy hosts and ports available for various protocols, such as http, https, ftp, or file. You can also specify the addresses for which proxies can be bypassed.