Backup Oozie
To backup the Oozie service, you must backup the Oozie database.
For other databases, Cloudera recommends that you perform backup of your databases before beginning the upgrade.
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Ambari database
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Hive Metastore database (after the pre-upgrade tool runs compaction)
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Oozie Server database
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Ranger database
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Ranger KMS database
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Druid database
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Superset Database