A data file for Locally Managed Temporary Tablespace was accidentally dropped on the OS level.

I tried to restore, but got the following errors. How do you solve it?

SQL> select tablespace_name, file_name, bytes/1048576 "MB" from dba_temp_files;
select tablespace_name, file_name, bytes/1048576 "MB" from dba_temp_files
*
ERROR at line 1:
ORA-01157: cannot identify/lock data file 201 - see DBWR trace file
ORA-01110: data file 201: '/u03/oradata/ocom/big_temp01.dbf'


SQL> ALTER TABLESPACE BIG_TEMP ADD TEMPFILE '/u03/oradata/ocom/big_temp01.dbf' SIZE 1073741824;
ALTER TABLESPACE BIG_TEMP ADD TEMPFILE '/u03/oradata/ocom/big_temp01.dbf' SIZE 1073741824
*
ERROR at line 1:
ORA-01537: cannot add data file '/u03/oradata/ocom/big_temp01.dbf' - file already part of database

SQL> alter database create datafile '/u03/oradata/ocom/big_temp01.dbf' as '/u03/oradata/ocom/big_temp01.dbf';
alter database create datafile '/u03/oradata/ocom/big_temp01.dbf' as '/u03/oradata/ocom/big_temp01.dbf'
*
ERROR at line 1:
ORA-01516: nonexistent log file, datafile or tempfile '/u03/oradata/ocom/big_temp01.dbf'