SOA BPEL (10.1.3.x) Identity service: java.security.PrivilegedActionException: javax.xml.soap.SOAPException: Message send failed: Connection timed out

The reason for this error:
"java.security.PrivilegedActionException: javax.xml.soap.SOAPException: Message send failed: Connection timed out:"
was that an proxy server was configured on the oc4j_soa container in opmn.xml

BPEL Console gave this error:
The following exception occured while processing this request:
Io exception: The Network Adapter could not establish the connection

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