Oracle GoldenGate for MongoDB Migrations provides you with a single recipe to facilitate online or offline database migrations.The Database migration recipe performs an Initial load, and then applies change events until you're ready to switch over to the target database.

• Offline: Source applications must be taken offline prevent updates to the source database during migration. Offline migration is most suitable for small databases, or where duration of downtime is not a concern. Data and metadata are exported from the source database and imported into the target database.
• Online: Source systems can remain online during the migration. Online migration is most suitable for large databases, or for critical applications where duration of downtime is a concern. An initial snapshot of data and metadata is exported from the source database and imported into the target database, followed by continuous synchronization of changes. Downtime is required only during switchover.

1. From the GoldenGate Studio Home page, click Create pipeline.
2. On the Recipe page, select a recipe to follow.
3. Follow the instructions to Create a pipeline.