Is Oracle 12c supported With SOA-P 5.X and FSW 6.x ?

Issue

• is Oracle 12c supported With SOA-P 5.X and FSW 6.x ?
  -Is FWS compatible with Oralce 12C and java 1.8
• We are using JBoss Overlord and have upgraded our database to Oracle 12c from 11g. It is unable to start, and we got following exception.

14:47:15,523 ERROR [org.jboss.msc.service.fail] (ServerService Thread Pool -- 54) MSC000001: Failed to start service jboss.persistenceunit."overlord-test.war#overlord-test-activity": org.jboss.msc.service.StartException in service jboss.persistenceunit."overlord-test.war#overlord-test-activity": javax.persistence.PersistenceException: [PersistenceUnit: overlord-test-activity] Unable to build EntityManagerFactory
        at org.jboss.as.jpa.service.PersistenceUnitServiceImpl$1.run(PersistenceUnitServiceImpl.java:103)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [rt.jar:1.7.0_67]
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [rt.jar:1.7.0_67]
        at java.lang.Thread.run(Thread.java:745) [rt.jar:1.7.0_67]
        at org.jboss.threads.JBossThread.run(JBossThread.java:122) [jboss-threads-2.1.0.Final-redhat-1.jar:2.1.0.Final-redhat-1]
Caused by: javax.persistence.PersistenceException: [PersistenceUnit: overlord-test-activity] Unable to build EntityManagerFactory
        at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:930)
        at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:904)
        at org.hibernate.ejb.HibernatePersistence.createContainerEntityManagerFactory(HibernatePersistence.java:92)
        at org.jboss.as.jpa.service.PersistenceUnitServiceImpl.createContainerEntityManagerFactory(PersistenceUnitServiceImpl.java:200)
        at org.jboss.as.jpa.service.PersistenceUnitServiceImpl.access$600(PersistenceUnitServiceImpl.java:57)
        at org.jboss.as.jpa.service.PersistenceUnitServiceImpl$1.run(PersistenceUnitServiceImpl.java:99)
        ... 4 more
Caused by: org.hibernate.HibernateException: Unable to determine Dialect to use [name=Oracle, majorVersion=12]; user must register resolver or explicitly set 'hibernate.dialect'
        at org.hibernate.service.jdbc.dialect.internal.DialectFactoryImpl.determineDialect(DialectFactoryImpl.java:105)
        at org.hibernate.service.jdbc.dialect.internal.DialectFactoryImpl.buildDialect(DialectFactoryImpl.java:67)
        at org.hibernate.engine.jdbc.internal.JdbcServicesImpl.configure(JdbcServicesImpl.java:146)
        at org.hibernate.service.internal.StandardServiceRegistryImpl.configureService(StandardServiceRegistryImpl.java:75)
        at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:159)
        at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:131)
        at org.hibernate.cfg.SettingsFactory.buildSettings(SettingsFactory.java:78)
        at org.hibernate.cfg.Configuration.buildSettingsInternal(Configuration.java:2295)
        at org.hibernate.cfg.Configuration.buildSettings(Configuration.java:2291)
        at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1760)
        at org.hibernate.ejb.EntityManagerFactoryImpl.<init>(EntityManagerFactoryImpl.java:94)
        at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:920)
        ... 9 more

• Can you please have a look ?