Upgrade Requirements
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## Upgrade Requirements

The log file format changed in the Berkeley DB 4.7 release.

No database formats changed in the Berkeley DB 4.7 release.

The Berkeley DB 4.7 release does not support live replication upgrade from the 4.2 or 4.3 releases, only from the 4.4 and later releases.

For further information on upgrading Berkeley DB installations, see Upgrading from previous versions of Berkeley DB .

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