ByteArrayIdTest and PrimitiveByteArrayIdTest fails on mysql with error
BLOB/TEXT column 'id' used in key specification without a key length

• HHH-10904 Closed fixes it in master by ignoring tests on mysql
• (fails also on oracle, can be fixed with property hibernate.dialect.oracle.prefer_long_raw)

IdBagSequenceTest

• HHH-10904 Closed fixes it in master by requiring sequences feature

ListAddTest

• only wrong failure reason message

EnhancerTest times out

• HHH-10907 Closed fixes it in master

UniqueConstraintGenerationTest fails on db2

• db2 uses different syntax for unique constraint

JoinedSubclassWithEmbeddableTest, SingleTableWithEmbeddableTest, TablePerClassWithEmbeddableTest fails on oracle with ORA-00972: identifier is too long on Oracle databases

• https://github.com/hibernate/hibernate-orm/pull/1538 fixes it in master