The image shows the topology of the use case described above.

In the upper left is the source primary CDB (CDB100) containing 2 PDBs (PDB002, PDB003).

The lower left shows the standby CDB for CDB100 (CDB100_STBY) containing 2 PDBs (PDB002, PDB003).

An arrow from source primary CDB CDB100 pointing to its standby CDB100_STBY is labeled "Data Guard Redo Ship/Apply".

The upper right of the image shows the destination primary CDB (CDB200) showing one PDB (PDB001) lifted away from the CDB.

The lower right shows the destination standby CDB for CDB200 (CDB200_STBY) showing one PDB (PDB001) lifted away from the CDB.

An arrow from the destination primary CDB CDB200 pointing to its standby CDB200_STBY is labeled "Data Guard Redo Ship/Apply".

Between the source primary CDB (CDB100) and the destination primary CDB (CDB200) is shown an ASM disk group with solid lines to each primary CDB. There is also an arrow labeled "Unplug/Plug via Broker Migrate No File Copy" pointing from PDB001 in CDB200 to the original source position for PDB001 in CDB100, indicating that the PDB is in the process of unplugging from the destination and being plugged into the source.

Between the source standby CDB (CDB100_STBY) and the destination standby CDB (CDB200_STBY) is shown an ASM disk group with solid lines to each standby CDB. There is also an arrow labeled "Broker Migrate Create ASM Alias No File Copy" pointing from PDB001 in CDB200_STBY to the original source position for PDB001 in CDB100_STBY, indicating that the PDB is in the process of unplugging from the destination and being plugged into the source.