Can u please post the results of
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SQL> alter tablespace psapundo
2 add datafile 'D:\UNDOFILE01' size 1m;

Tablespace altered.

select name,status,CREATION_TIME,CREATION_CHANGE# from v$datafile
where name='D:\UNDOFILE01'

SQL> alter database datafile 'D:\UNDOFILE01.DBF' offline;

Database altered.

select name,status,CREATION_TIME,CREATION_CHANGE# from v$datafile
where name='D:\UNDOFILE01'