Which of the following migration options can be considered for zero downtime migration to Oracle Autonomous Data Warehouse?

GoldenGate is an effective choice for zero downtime migration to Oracle Autonomous Data Warehouse because it is designed specifically for high availability and real-time data capture and replication. It allows for continuous synchronizing of data changes from the source database to the target, which means that applications can continue to run on the source database without disruption while the migration occurs. This capability is vital for organizations that cannot afford downtime during the migration process.

What sets GoldenGate apart is its support for heterogeneous environments, enabling the transfer of data between different database systems. Additionally, it can handle a high volume of transactions and offers comprehensive tools for monitoring and managing data replication processes in real-time.

While the other options may serve different purposes in the context of database management and replication, they do not provide the same level of seamless data migration with minimal impact on ongoing operations as GoldenGate does. For instance, database links typically require both databases to be available and can cause downtime if not configured properly. Oracle Streams, while capable of capturing and replicating data changes, is not as widely used for new projects due to its complexity and potential maintenance overhead. Materialized views, although useful for summarizing data, do not support real-time replication and would not provide an effective solution for a zero downtime migration.