Use this clause to add containers to the default CONTAINER_DATA attribute or an object-specific CONTAINER_DATA attribute for a common user. Use container_name to specify one or more containers to add.You cannot use this clause if the default CONTAINER_DATA attribute is set to ALL. If you use this clause when the default CONTAINER_DATA attribute is set to DEFAULT, then CDB$ROOT will automatically be added to the set of containers, unless the set already contains CDB$ROOT.You cannot use this clause if the object-specific CONTAINER_DATA attribute is set to ALL or DEFAULT.