If you have a proxy server running on the host where Oracle Management Service (OMS) is installed.
If you want to use the same proxy server settings or have different settings for the OMS to communicate with its Oracle Management Agents (Management Agents).
To set up the proxy server settings, do the following:
In Enterprise Manager Grid Control, click Setup from the top-right corner of the home page.
On the Overview of Setup page, from the vertical menu to the left, click Patching Setup.
On the Patching Setup page, in the My Oracle Support and Proxy Connection tab, in the My Oracle Support Connection Setting section, select Manual Proxy Configuration and specify the proxy server host, port, realm, user name, and password.
Note: Only HTTP and HTTPS protocols are supported. Also note that NTLM proxy is not currently supported.
If you want to use the same proxy settings for communicating with the Management Agents, then go to Step (6). Otherwise, go to Step (5).
In the Agent Connection Setting section, do one of the following:
If you want to use the proxy settings given in My Oracle Support Connection Setting section, then retain the default section, that is, Use My Oracle Support connection settings.
If you want to use proxy settings different from the ones specified in My Oracle Support Connection Setting section, then select Manual proxy configuration and specify the proxy server details.
Note: Only HTTP and HTTPS protocols are supported. And NTLM proxy is not currently supported.
The proxy server settings you specify are registered in the Management Repository. However, in case of multiple OMS environment, after you set up the proxy server settings for one OMS, restart other OMSes to ensure that the proxy server settings registered for communication with Management Agents are propogated across all OMSes.