VDB and vFile Hooks
Delphix Administration / HANA Environments and Data Sources / Customizing HANA Management with Hook Operations / VDB and vFile Hooks

Hook

Description

Configure Clone

Operations performed after initial provision or after a refresh.

This hook will run after the virtual dataset has been started.
During a refresh, this hook will run before the Post-Refresh hook.

Pre-Refresh

Operations performed before a refresh.
This hook will run before the virtual dataset has been stopped.

These operations can cache data from the virtual dataset to be restored after the refresh completes.

Post-Refresh

Operations performed after a refresh.
This hook will run after the virtual dataset has been started and after the Configure Clone hook.
This hook will not run if the refresh or Pre-Refresh hook operations fail.

These operations can restore cached data after the refresh completes.

Pre-Rewind

Operations performed before a rewind.
This hook will run before the virtual dataset has been stopped.

These operations can cache data from the virtual dataset to be restored after the rewind completes.

Post-Rewind

Operations performed after a rewind. This hook will not run if the rewind or Pre-Rewind hook operations fail.
This hook will run after the virtual dataset has been started.
This hook will not run if the rewind or Pre-Rewind hook operations fail.

These operations can restore cached data after the rewind completes.

Pre-Snapshot

Operations performed before a snapshot.

These operations can quiesce data to be captured during the snapshot, or stop processes that may interfere with the snapshot.

Post-Snapshot

Operations performed after a snapshot.
This hook will run regardless of the success of the snapshot or Pre-Snapshot hook operations.

These operations can undo any changes made by the Pre-Snapshot hook.

Pre-Start

Operations performed before startup of a VDB or vFile.

These operations can be used to initialize configuration files or stop processes that might interfere with the virtual dataset.

Post-Start

Operations performed after startup of a VDB of vFile.

These operations can be used to clean up any temporary files, or restart processes that may have been stopped by a Pre-Start hook, or log notifications.

Pre-Stop

Operations performed before shutdown of a VDB or vFile.

These operations can quiesce data or processes prior to virtual dataset shutdown.

Post-Stop

Operations performed after shutdown of a VDB or vFile.


You can leverage hooks to run required scripts which address several different use cases. For example, you may want to prevent your monitoring systems from triggering during VDB startup and shutdown. 

Operation Failure

If a hook operation fails, it will fail the entire hook: no further operations within the failed hook will be run.