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About Oracle Recovery
	I want to recover our some oracle dbf and tried DUL5.1.
	But something wrong.
	log is nelow:
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	PRM:  Warning: scaned 10MB data, couldn't find file header for users.dbf
	DB file version info:
	File: users.dbf, db version: 0
	File is not exist: mlkj
	how about the db version? is the dbf header corrupted? 
	can you unload this datafile?
	and would you like to try with this video ?  https://www.youtube.com/watch?v=jOT6k-KF8Hg
	db version is 9.
	I tried the video.
	but we lost SYSTEM01.DBF.
	you can use non-dictionary mode , and specify the TS# and file# for that datafile .
	scan was finished successfully.
	but trees are  DB_20190721191326 - lob segment
	and lob segment is empty.
	right click the DB_20190721191326 and select scan extent , then you may get some table.
	I could get some table!!
	but it is garbled.
	and Can I get these data?
	right click the table ,you can unload the data into file or data bridge them to another Oracle db. 
