Problem with some PDBs after enabling Extended Data Types

When I enabled Extended Data Types on my multi tenant  test database faced with problem some of pdbs successfully upgraded and opened but some pdbs not.

now i can't open them, it error like bellow. If someone now how to disable  Extended Data Types or have solution for this problem please help.

SQL> show pdbs    CON_ID CON_NAME  OPEN MODE  RESTRICTED---------- ------------------------------ ---------- ----------  2 PDB$SEED  READ ONLY  NO  3 DB1  READ WRITE NO  4 DB2  MOUNTED  5 DB3  READ WRITE NO  6 DB4  READ WRITE NO  7 DB5  READ WRITE NO  8 DB6  MOUNTEDSQL> alter session set container=DB2;Session altered.SQL> startup;