This illustration shows an Oracle Streams two-database replication environment that includes the following Oracle databases:

Both databases contain the redo log for the local database. This redo log records changes to the hr schema.

The db1.example.com database has the following Oracle Streams components configured:

The db2.example.com database has the following Oracle Streams components configured:

For an optional bi-directional replication environment, the db1.example.com database also has the following Oracle Streams components configured. These components are shown in gray in the graphic and their actions are shown in dashed lines.

For an optional bi-directional replication environment, the db2.example.com database also has the following Oracle Streams components configured. These components are shown in gray in the graphic and their actions are shown in dashed lines.