Web Service security is centered about standards like WS-Security, unfortunately I can not find a list of which standards and versions OWSM implements. But I have found the following:

• OWSM 10.1.3

• WS-Security 1.0
• WS-Policy
• WS-Addressing

In theOracle SOA Suite – Oracle BPEL Process Managerdocument the following is stated:
"Specific standards supported by BPEL PM and the Oracle Web services stack:

BPEL 1.1 (full) and 2.0 (partial), HTTP 1.0 and 1.1, SOAP 1.1, SOAP with

Attachments, WS-Addressing 1.0, WSDL 1.1, WS-I Basic Profile 1.0, WSPolicy,

WS-Security 1.0 and UDDI v3."

Unknown support and version:

• WS-ReliableMessaging