Oracle JDeveloper always connects over HTTPS (SSL) to your SOA Server. In my cluster setup I ran into an issue, that it could not setup the SSL connections.
Creating HTTPS connection to host:node2.vijfhuizen.local, port:8021
unable to find valid certification path to requested target
This issue comes that the runtime Java of JDeveloper does not have the correct certificates loaded in your keystore. You should copy these certificates in your local keystore (cacerts), this file is located in $JAVA_HOME/jre/lib/security.
Implementing this
solution is written here.
$JAVA_HOME/bin/javac InstallCert.java
Then
mv $JAVA_HOME/jre/lib/security/cacerts $JAVA_HOME/jre/lib/security/cacerts.org
cp jssecacerts $JAVA_HOME/jre/lib/security