WebLogic 11g(JDK7) and 12c( JDK8) self signed certificate creation using Java keytool and using the

Is there any official documentation on which algorithms we should use to create the self signed certificates and updating WLS SSL Ciphers based on the Java Version.

We know that in the java.security file we can add  the vulnerable algorithms , is there any references on which algorithms we need to disable ?

For the WebLogic Ciphers , is there any documentation on which CIphers we need to allow for secure connections ?

This is the message we are seeing the browser , we want to use the AES 256 instead of AES 128 , tried to update the WLS cipher but the WebLogic is not recognizing the AES_256 Cipher.