Each dSource contains metadata that associates it with the source database, as well as the data it has ingested from the source database in the form of snapshots up to that point. It is possible to detach, or unlink, a dSource from its source database. This breaks the association with the source database without affecting the data within the Delphix Engine. Detached dSources and their source databases have these properties:
  • A detached dSources can still be used to provision a virtual database (VDB).
  • You can re-link the source database as a different dSource.

Detaching a dSource

  1. Login to the Delphix Admin application as a user with OWNER privileges on the dSource, group, or domain.
  2. Click Manage.
  3. Select My Datasets.
  4. Select the database you want to unlink or delete.
  5. Click the Configuration tab.
  6. Click the Unlink icon.
    A warning message will appear.
  7. Click Yes to confirm.

Rebuilding Source Databases and Using VDBs

In situations where you want to rebuild a source database but retain the existing dSource, you will need to detach the original dSource and create a new one from the rebuilt data source.

  1. Detach the dSource as described in the procedure on this page.
  2. You cannot attach a dSource with the same name as a dSource that is already attached. If you intend to give the new dSource the same name as the original one, rename the detached dSource.
    1. At the top of the Configuration tab, next to the dSource's name, click the Edit (pencil) icon.
    2.  After renaming the dSource, click the green check mark.
  3. Create the new dSource from the rebuilt database.

You will now be able to provision VDBs from both the detached dSource and the newly created one, but the detached dSource will only represent the state of the source database prior to being detached.

Attaching a Previously Detached dSource

The attach operation is currently only supported from the command line interface (CLI). Full GUI support will be added in a future release. You can only re-attach databases that represent the same physical database.

  1. Login to the Delphix CLI as delphix_admin or a user with OWNER privileges on the dSource, group, or domain.
  2. Select the dSource by name using database select <dSource Name>.
  3. Run the attachSource command.
  4. Set the source config you want to attach to, using set source.config=<Source Database Unique Name>. Source configs are named by their database unique name.
  5. Set any other source configuration operations as you would for a normal link operation.

  6. Run the commit command. 

Backup Mode for Attaching Oracle dSources

For Oracle dSources, the SnapSync backup option should be set to SCN Backup mode. Level Backup mode is based on information stored in the the database control file. If the control file of the newly attached database does not contain information about the previous backups, an initial backup will be created. In addition, Block Change Tracking will not be in sync, and the next SnapSync will need to read the entire database to determine which blocks have changed. See Advanced Data Management Settings for Oracle dSources for more information about Backup Mode.