Virtual databases (VDB) are a key data management concept for Delphix. To create or provision a virtual database, you will need either a linked dSource from a source host or another VDB and a compatible target environment, as described in the Requirements for SQL Server environments and SQL Server Matrix.
To provision a VDB in DCT:
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Log in to DCT.
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Navigate to Data > Data Management > VDB and select Provision VDB. For more information, refer to Provisioning a SQL Server VDB.
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Select a SQL Server dSource or an existing VDB from the available list, then select Next.
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On the Provision Point page, select one of the following options:
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Select Provision Point: Select a provision point displayed on this page.
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LSN Number Refresh (Slower): Enter the SQL Server Log scan (LSN) number range.
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Bookmarks: Choose the bookmark from the list.

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Select target environment and repository and click Next.
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On the Target Configuration page, choose the database recovery model and database name. Optionally, configure VDB parameters and other advanced settings and click Next.
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On the Policies page, select the default DCT Snapshot and DCT Retention policies and click Next.
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(Optional) On the Masking page, select the Mask this VDB and click Next.
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(Optional) On the Hooks page, configure provisioning hooks and click Next. For more information, refer to Hook operations list and SQL Server hook operations.
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Review the VDB summary details and click Submit.
Once the database is provisioned, click on the Actions menu to perform the following operations:
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Refresh/ Undo Refresh
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Create Bookmark
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Create Snapshot
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Disable/Enable
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Stop/Start
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Lock/Unlock
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Rename
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Migrate
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Delete
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Virtual to Physical