Log shipping

You can configure the CDC Replication Engine for Oracle databases to ship logs using Data Guard.

To use this feature, the CDC Replication Engine for Oracle databases must be configured to only use Oracle archive logs. As a result, the CDC Replication Engine for Oracle databases latency is affected by the Oracle log switch frequency and the amount of time required to physically ship the logs to the remote destination. Latency may increase if the log switch interval and the log shipping time increase.

You can ship your database logs with Oracle Data Guard log transport services or with a customized log shipping process that you develop and maintain.

Log shipping can address performance issues if the CPU on your source database server is overloaded and is unable to accommodate the additional CPU resources that the CDC Replication Engine for Oracle databases requires. Log shipping improves performance by moving the processing to a different server.

This type of configuration may be used to resolve a Log Reader bottleneck.

Note: Log shipping can also be used to remove dependencies between database log retention and the CDC Replication Engine for Oracle databases. The archive logs on your database server can be removed once they are shipped to the shared volume.