Using the Root Container Extract from PDB
To capture from a multitenant database, you must use an Extract that is
                configured at the root level using a c## account. To apply data
                into a multitenant database, a separate Replicat is needed for each PDB, because a
                Replicat connects at the PDB-level and doesn't have access to objects outside of
                that PDB
                  
One Extract group can capture from multiple pluggable databases to a
                single trail. In the parameter file, source objects must be specified in
                    TABLE and SEQUENCE statements with their fully
                qualified three-part names in the format of
                        container.schema.object.
                  
As an alternative to specifying three-part names, you can specify a
                default pluggable database with the SOURCECATALOG parameter, and
                then specify only the schema.object in subsequent
                    TABLE or SEQUENCE parameters. You can use
                multiple instances of this configuration to handle multiple source pluggable
                databases. For example:
                  
SOURCECATALOG pdb1 TABLE phoenix.tab; SEQUENCE phoenix.seq; SOURCECATALOG pdb2 TABLE dallas.tab; SEQUENCE dallas.seq;