Issues

Reduce memory consumption caused by Method.getParameterTypes()

Audit tables storing incorrect discriminator value when using JOINED entity inheritance.

Add a Performance Tuning and Best Practices chapter

OrderedSequenceGenerator no longer serves any purpose

Wrong NativeQueryImpl.setZeroBasedParametersIndex when Session#createSQLQuery is executed after EM#createNativeQuery

SessionFactoryOptionsImpl#releaseResourcesOnCloseEnabled never initialized

Improve performance of StringHelper.qualify() and StringHelper.unqualify()

Improve the JPA bootstrapping section in the User Guide

Add test to prove that @Basic( fetch = FetchType.LAZY ) really works as expected

Missing unique constraint for many-to-many with unique=true in list mapping

Closing EntityManager with an active transaction causes JTA connection leak

Performance problem if cached entity has attribute state with an expensive toString() method (LOB, etc)

NamedNativeQueries ordinal parameters are zero based

SQLServer2005LimitHandler applies TOP(?) to subselect

Log the failing SQL when the batched execution throws a RuntimeException (e.g. StaleStateException)

JPA join with treat causes QuerySyntaxException: Invalid path

Add method setTimeout for DetachedCriteria

Casting to boolean in query fails on MySQL

Skip CriteriaLiteralInSelectExpressionTest#testStringLiteral2 for Oracle, DB2, SQL Server, and Sybase dialects

Add the full Hibernate ORM version to the User Guide title

Improve documentation regarding GenerationType.AUTO

Proxy-wrapped Sessions (ThreadLocalSessionContext.TransactionProtectionWrapper) handle equals incorrectly

Auditing tables are not filled correctly when using a custom hashCode method that does not use the entity id.

Attempt to resolve foreign key metadata from JDBC metadata failed to find column mappings for foreign when keywords auto quoting is enabled

Improve documentation for JTA configuration in user guide and 5.0 migration guide

NPE in SchemaValidator with DdlTransactionIsolatorJtaImpl

Envers audits unchanged objects for a certain use case

Cache EventListenerRegistry and StatisticsImplementor

Invalid statement generated for @MapKeyColumn(updatable=false) for @OneToMany

Subclass embeddable sub-properties ignored if superclass has property with same name

The drop schema filtering of sequence generation with schemaFilter is wrong

NativeQueryImpl::doScroll seems to be broken when used with setParameterList (affects scroll and stream)

InformationExtractorJdbcDatabaseMetaDataImpl getTable method wrong default namespace lookup

Document the PASS_DISTINCT_THROUGH Query Hint

Startup performance regression : schema update/validate

The distributed modules for WildFly are missing Hibernate Envers test case support.

OneToMany generated incorrect SQL where MapKey is on superclass and using InheritanceType.JOINED

Array types as @ElementCollection values not handled

NullPointerException when using join with subselect in hbm mapping

Support private persistent attributes in @MappedSuperclas

Hibernate throws SQLGrammarException: Error accessing table metadata when @Table is used with schema value and no catalog

Use UTF-8 charset for reading files for initializing the database (javax.persistence.sql-load-script-source scripts)

Allow AttributeConverter on attributes marked as Lob (REALLY this time)

MySQL fails using the NCLOB type

PostgreSQL should not use nvarchar when using Nationalization

Natural Id 2nd level Cache not working when Identity is database generated

Spatial not bundled in release bundles

2.3.20. SQL quoted identifiers in User Guide should discuss explicit enclosure in double-quotes (JPA)

Selecting a joined element collection produces wrong SQL