You can back up a Google Cloud Spanner database on demand.
Procedure
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From the Command Center navigation pane, go to Protect > Databases.
The Databases page appears.
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On the Instances tab, click the instance.
The Instances page appears.
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On the Database groups tab, for the database group that you want to back up, click the action button
, and then click Backup.The Backup options dialog box appears.
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Select the backup level and then click Submit.