"Certificates does not conform to algorithm constraints" when starting up Oracle Access Manager 11g

Problem:

While starting up the Oracle Access Manager 11gr2ps3 (OAM 11.1.2.3.0) AdminServer, you may receive continuously repeating errors of the following:

<Feb 8, 2017 3:26:57 AM GMT> <Warning> <Coherence> <BEA-000000> <2017-02-08 03:26:57.537/135.970 Oracle Coherence GE 3.7.1.13 <Warning> (thread=PacketListener1, member=n/a): TcpDatagramSocket{bind=ServerSocket[addr=/192.168.0.10,localport=9001]}, exception regarding peer iamhost1/192.168.0.10:9001, General SSLEngine problem; Certificates does not conform to algorithm constraints>

Solution:

In this case, we had upgraded our JDK version from jdk1.7.0_91 to jdk1.7.0_121, which introduced this error.

1. Restore the previously working JDK version, or consider looking at changing your JDK version.

Applicable Version:

• Oracle Access Manager (OAM) 11g (11.1.2.3.0)