The application container propagates the application changes to the application PDBs when the application PDBs synchronize with the application in the application root.
Synchronize one application in an application PDB by issuing the following SQL statement when the application PDB is the current container, where application_name is the name of the application:
ALTER PLUGGABLE DATABASE APPLICATION application_name SYNC;
Synchronize all of the applications in an application PDB, including implicitly created applications, by issuing the following SQL statement when the application PDB is the current container:
ALTER PLUGGABLE DATABASE APPLICATION ALL SYNC;