This chapter covers both major changes to existing functionality, and also deprecated and removed functionality.

OpenDJ improves on earlier releases introducing many new features and important fixes without major, backwards-incompatible changes. Take the following into account, however. When upgrading from 2.4.4 or earlier, after you upgrade but before you restart OpenDJ, you must rebuild the ds-sync-hist index. The default DB cache size is now 50%, rather than 10%. If you have multiple backends, configure cache sizes accordingly. The number of LDAP request handlers now defaults to half the CPU count. The replication purge delay default has increased from one day to three days. Syntax checking has been added for certificate and country attribute values. This affects applications updating those attribute values. Applications updating country attribute values must now use Country String syntax for example, which uses two-character codes from ISO 3166 such as US instead of full names such as United States.

OpenDJ makes use of new environment variables aligned with the project name to use OPENDJ. Use of the old variables is deprecated. The old variables are likely to be removed in a future release.

No functionality has been removed in OpenDJ . No functionality is planned to be removed at this time.