D:\xifenfei\system01.dbf
D:\TEMP\recover\dul\bak>dul
Data UnLoader: 11.2.0.0.4 - Internal Only - on Wed Sep 28 17:01:56 2016
with 64-bit io functions
Copyright (c) 1994 2016 Bernard van Duijnen All rights reserved.
Strictly Oracle Internal Use Only
DUL> show datafiles;
Sorry, no valid data files found in control.txt

0 0 D:\xifenfei\system01.dbf
D:\TEMP\recover\dul\bak>dul
Data UnLoader: 11.2.0.0.4 - Internal Only - on Wed Sep 28 17:00:27 2016
with 64-bit io functions
Copyright (c) 1994 2016 Bernard van Duijnen All rights reserved.
Strictly Oracle Internal Use Only
DUL: Warning: File Type mismatch 1 != 8
DUL: Warning: D:\xifenfei\system01.dbf Header tablespace number 3
!= 0
DUL: Warning: D:\xifenfei\system01.dbf Header relative file number 1 != 0
Found db_id = 2948357999
Found db_name = XIFENFEI
DUL: Warning: Found mismatch while checking file D:\xifenfei\system01.dbf
DUL: Warning: DUL osd_parameter or control.dul configuration error
DUL: Warning: Given file number(0) in control file does not match file# in dba(1)

3 1 D:\xifenfei\system01.dbf
D:\TEMP\recover\dul\bak>dul
Data UnLoader: 11.2.0.0.4 - Internal Only - on Wed Sep 28 17:03:46 2016
with 64-bit io functions
Copyright (c) 1994 2016 Bernard van Duijnen All rights reserved.
Strictly Oracle Internal Use Only
DUL: Warning: File Type mismatch 1 != 8
Found db_id = 2948357999
Found db_name = XIFENFEI
DUL> show datafiles;
ts# rf# start blocks offs open err file name
3 1 0 320257 0 1 0 D:\xifenfei\system01.dbf

DUL> bootstrap;
Scanning SYSTEM tablespace to locate compatibility segment ...
DUL: Warning: No files found for tablespace 0
Reading EXT.dat 0 entries loaded and sorted 0 entries
Reading SEG.dat 0 entries loaded
Reading COMPATSEG.dat 0 entries loaded
Reading SCANNEDLOBPAGE.dat 0 entries loaded and sorted 0 entries
DUL: Error: No compatibility segments found

DUL> unload table OBJ$ 
2 storage ( tablespace 3 segobjno 18 file 1 block 240);
. unloading table OBJ$ 79074 rows unloaded
DUL> unload table TAB$( OBJ# number, DATAOBJ# number,
2 cluster C_OBJ#(OBJ#)
3 storage ( tablespace 3 segobjno 2 tabno 1 file 1 block 144);
. unloading table TAB$ 4482 rows unloaded
DUL> unload table COL$ ( OBJ# number, COL# number , SEGCOL# number,
2 cluster C_OBJ#(OBJ#)
3 storage ( tablespace 3 segobjno 2 tabno 5 file 1 block 144);
. unloading table COL$ 114491 rows unloaded
DUL> unload table USER$
2 cluster C_USER#(USER#)
3 storage ( tablespace 3 segobjno 10 tabno 1 file 1 block 208);
. unloading table USER$ 96 rows unloaded
----其他表省略,根据需要的依次处理
尝试使用dul恢复数据
DUL> desc portal_emr.BASEELEMENT;
Table PORTAL_EMR.BASEELEMENT
obj#= 87200, dataobj#= 87200, ts#= 9, file#= 7, block#=458
tab#= 0, segcols= 8, clucols= 0
Column information:
icol# 01 segcol# 01 BENAME len 30 type 1 VARCHAR2 cs 852(ZHS16GBK)
icol# 02 segcol# 02 TYPENAME len 30 type 1 VARCHAR2 cs 852(ZHS16GBK)
icol# 03 segcol# 03 TYPETYPE len 22 type 2 NUMBER(0,0)
icol# 04 segcol# 04 BEXMLTEXT len 4000 type 1 VARCHAR2 cs 852(ZHS16GBK)
icol# 05 segcol# 05 DEPTGROUPCODE len 30 type 1 VARCHAR2 cs 852(ZHS16GBK)
icol# 06 segcol# 06 ISCOMMON len 22 type 2 NUMBER(0,0)
icol# 07 segcol# 07 BESPELL len 15 type 1 VARCHAR2 cs 852(ZHS16GBK)
icol# 08 segcol# 08 ELEMTYPE len 22 type 2 NUMBER(0)
DUL> show datafiles;
ts# rf# start blocks offs open err file name
3 1 0 320257 0 1 0 D:\xifenfei\system01.dbf
9 7 0 4170425 0 1 0 D:\BaiduYunDownload\PORTAL_EMR
DUL> unload table portal_emr.BASEELEMENT;
. unloading table BASEELEMENT 1913 rows unloaded