[TR] Veritabanında aynı isimli database file var mı?

SELECT SUBSTR(file_name, INSTR(file_name, '/', -1, 1) + 1) pure_file_name, COUNT(*)
FROM dba_data_files
GROUP BY SUBSTR(file_name, INSTR(file_name, '/', -1, 1) + 1)
ORDER BY 2 DESC;