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## New Features in Release 22.2

Removed Import/Export Utility

As of release 22.2 the import/export utility is no longer part of the release. It was previously deprecated and its functionality has been moved to the data migrator utility, which is an independent download. Chapter 7 of the Oracle NoSQL Database Administrator's Guide contains details on using the data migrator as well as a comparison between the import/export utility and the data migrator.

Erasing Obsolete User Data Has Been Enabled By Default

Data erasure, added in 21.2, will now be enabled by default. This feature erases obsolete user data within a specified time period after becoming obsolete, without adding significant performance impact to the application.

Two Rep Node parameters control erasure: "enableErasure" is used to enable erasure, which is now enabled by default, and "erasurePeriod" specifies the time required to complete an erasure cycle, which defaults to 6 days.

Note:

Snapshot-based backups create hard links to original files. Until these backups are copied to their target location and the corresponding hard links are removed, erasure will not process obsolete data in those files. This is to preserve the integrity of the backups. Erasure ignores files with hard links to them.