Help Center/ Data Replication Service/ User Guide (Kuala Lumpur Region)/ FAQs/ Real-Time Synchronization/ Why Do I Use the SCAN IP Address to Connect to an Oracle RAC Cluster?
Updated on 2022-08-16 GMT+08:00
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Why Do I Use the SCAN IP Address to Connect to an Oracle RAC Cluster?

If the source Oracle database is an RAC cluster, you are advised to use SCAN IP+SERVICE_NAMES to create a task because SCAN IP has stronger fault tolerance, better load balancing capability, and faster synchronization.

  • If the SCAN IP address is used, ensure that the SCAN IP address can communicate with all virtual IP addresses of the source database. Otherwise, the connection test cannot be passed.
  • If SCAN IP is not used, the virtual IP address of a node can be used. If other nodes are abnormal, the synchronization process is not affected.

For details about the SCAN IP address, see the documents on the Oracle official website.