Multiple Replication Agent instances allow transactions to be replicated in parallel along multiple independent paths, increasing replication throughput and performance, and reducing resource contention.
Using multiple Replication Agent
instances with Replication Server Multi-Path Replication™ enables the replication of
data through different streams, maintaining data consistency within a path but not
adhering to the commit order across different paths. Replication Agent for Oracle
supports the use of multiple Replication Agent instances to replicate Oracle tables and
procedures.
Note: All Replication Agent instances in a common Replication Agent group must be
of the same version.
For a description of end-to-end Multi-Path Replication
scenarios, see the Replication Server Heterogeneous Replication Guide.Configuration
In a Replication Server Multi-Path Replication scenario, multiple Replication Agent
for Oracle instances are grouped together and share common system resources to
coordinate in a Multi-Path Replication solution:
- Every Replication Agent for Oracle instance in a Replication Agent group must use the same value for the ra_admin_owner and ra_admin_prefix parameters.
- Each Replication Agent for Oracle instance in a Replication Agent group must use a unique value for the ra_admin_instance_prefix parameter. This parameter distinguishes Replication Agent for Oracle instances within a group.