Modifying the Java Security Posture
OAM Server 12c supports TLS1.2 and SHA-2. For compatibility with older products (including Webgate, OIM, and OAAM), relax the OAM security posture by making the following changes to the java.security policy:
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Remove TLSv1, TLSv1.1, MD5withRSA from the following key:
key - jdk.tls.disabledAlgorithms
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Remove MD5 from the following key:
key - jdk.certpath.disabledAlgorithms
Parent topic: Troubleshooting Security Policy Issues When Upgrading