SQL> drop tablespace users including contents and datafiles cascade constraints;
drop tablespace users including contents and datafiles cascade constraints
*
ERROR at line 1:
ORA-00604: error occurred at recursive SQL level 1
ORA-02429: cannot drop index used for enforcement of unique/primary key


we have accidentally deleted two of our datafiles in this tablespaces and there is no backup (since it is testDB).we have another three datafiles in that tablespace.how to proceed further.