Berkeley DB Reference Guide:
Upgrading Berkeley DB Applications
Upgrading Berkeley DB 3.3.X applications to Berkeley DB 4.0
Release 4.0: introduction
Release 4.0: db_deadlock
Release 4.0: lock_XXX
Release 4.0: log_XXX
Release 4.0: memp_XXX
Release 4.0: txn_XXX
Release 4.0: db_env_set_XXX
Release 4.0: DB_ENV->set_server
Release 4.0: DB_ENV->set_lk_max
Release 4.0: DB_ENV->lock_id_free
Release 4.0: Java CLASSPATH environment variable
Release 4.0: C++ ostream objects
Release 4.0: application-specific recovery
Release 4.0: upgrade requirements
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