You can deactivate an instance of the database by deconfiguring the instance. Deactivating an instance releases a license. After an instance is deconfigured, you can reconfigure it.
Procedure
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From the navigation pane, go to Protect > Databases.
The database Overview page appears.
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Go to Instances tab.
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Click the instance.
The instance page appears.
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In the upper-right area of the page, click Deconfigure.
The Confirm deconfiguration dialog box appears.
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Click Yes.