# Berkeley DB Reference Guide: Release 4.0: DB_ENV->lock_id_free
Berkeley DB: An embedded database programmatic toolkit.
Keywords: embedded,database,programmatic,toolkit,btree,hash,hashing,transaction,transactions,locking,logging,access method,access methods,Java,C,C++

Berkeley DB Reference Guide:
  Upgrading Berkeley DB Applications

Release 4.0: DB_ENV->lock_id_free

A new locker ID related API, the DB_ENV->lock_id_free method, was added to Berkeley DB 4.0 release. Applications using the DB_ENV->lock_id method to allocate locker IDs may want to update their applications to free the locker ID when it is no longer needed.

Copyright (c) 1996,2008 Oracle. All rights reserved.