Identity column support
DB2 now allows you to generate a unique numeric value for each row in a table. For example, the identity column can be used to generate unique primary key values. You can also port applications that use identity columns from other RDBMS vendors to DB2.

Externalized savepoints support
You can now programmatically roll back to a specified savepoint rather than rolling back an entire unit of work. This support gives application developers more control over rollback processing.

Increase log limit to 32 GB
The size of log files has been increased from 4 GB to 32 GB. This enables you to perform extremely large amounts of work within a single transaction.