利用BBED恢复数据文件头
http
使用
恢復
數據
文件
转载请注明出处：http://blog.csdn.net/guoyjoe/article/details/31018075 @@@@@@@利用BBED模拟损坏5文件1号块（文件头） BBED copy file 4 block 4 to file 5 block 1 File: /u01/app/oracle/oradata/PROD/tp01.dbf (5) Block: 1 Offsets: 0 to 19 Dba:0x01
转载请注明出处：http://blog.csdn.net/guoyjoe/article/details/31018075
@@@@@@@利用BBED模拟损坏5文件1号块（文件头）
BBED> copy file 4 block 4 to file 5 block 1 File: /u01/app/oracle/oradata/PROD/tp01.dbf (5) Block: 1 Offsets: 0 to 19 Dba:0x01400001 ------------------------------------------------------------------------ 1ea20000 04000001 1a4b0000 00000104 99810000 <32 bytes per line> sys@PROD> shutdown abort; ORACLE instance shut down. sys@PROD> starup SP2-0042: unknown command "starup" - rest of line ignored. sys@PROD> startup ORACLE instance started. Total System Global Area 939495424 bytes Fixed Size 2233960 bytes Variable Size 251660696 bytes Database Buffers 679477248 bytes Redo Buffers 6123520 bytes Database mounted. ORA-01122: database file 5 failed verification check ORA-01110: data file 5: '/u01/app/oracle/oradata/PROD/tp01.dbf' ORA-01210: data file header is media corrupt
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BBED开始恢复
1、找个文件头覆盖
<strong>BBED> copy file 4 block 1 to file 5 block 1 File: /u01/app/oracle/oradata/PROD/tp01.dbf (5) Block: 1 Offsets: 0 to 19 Dba:0x01400001 ------------------------------------------------------------------------ 0ba20000 01000001 00000000 00000104 edbc0000 <32 bytes per line> </strong>
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BBED> set file 5 block 1
FILE# 5
BLOCK# 1登入後複製
（1）改块的地址5文件1号块，rdba_kcbh
BBED> p kcvfhbfh struct kcvfhbfh, 20 bytes @0 ub1 type_kcbh @0 0x0b ub1 frmt_kcbh @1 0xa2 ub1 spare1_kcbh @2 0x00 ub1 spare2_kcbh @3 0x00 ub4 rdba_kcbh @4 0x01000001 ub4 bas_kcbh @8 0x00000000 ub2 wrp_kcbh @12 0x0000 ub1 seq_kcbh @14 0x01 ub1 flg_kcbh @15 0x04 (KCBHFCKV) ub2 chkval_kcbh @16 0xbced ub2 spare3_kcbh @18 0x0000
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BBED> d /v offset 4 File: /u01/app/oracle/oradata/PROD/tp01.dbf (5) Block: 1 Offsets: 4 to 23 Dba:0x01400001 ------------------------------------------------------- 01000001 00000000 00000104 edbc0000 l ............í?.. 00000000 BBED> m /x 01004001 offset 4 File: /u01/app/oracle/oradata/PROD/tp01.dbf (5) Block: 1 Offsets: 4 to 23 Dba:0x01400001 ------------------------------------------------------------------------ 01004001 00000000 00000104 edbc0000 00000000
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(2)文件的大小kccfhfsz
BBED> p kcvfhhdr
struct kcvfhhdr, 76 bytes @20
ub4 kccfhswv @20 0x00000000
ub4 kccfhcvn @24 0x0b200000
ub4 kccfhdbi @28 0x0f302c3e
text kccfhdbn[0] @32 P
text kccfhdbn[1] @33 R
text kccfhdbn[2] @34 O
text kccfhdbn[3] @35 D
text kccfhdbn[4] @36
text kccfhdbn[5] @37
text kccfhdbn[6] @38
text kccfhdbn[7] @39
ub4 kccfhcsq @40 0x00000d3d
ub4 kccfhfsz @44 0x00003200
s_blkz kccfhbsz @48 0x00
ub2 kccfhfno @52 0x0004
ub2 kccfhtyp @54 0x0003
ub4 kccfhacid @56 0x00000000
ub4 kccfhcks @60 0x00000000
text kccfhtag[0] @64
....................
sys@PROD> select name from v$dbfile where file#=5;
NAME
--------------------------------------------------
/u01/app/oracle/oradata/PROD/tp01.dbf
[oracle@jfdb PROD]$ ls -lFtr |grep tp01
-rw-r-----. 1 oracle oinstall 524296192 Jun 8 18:58 tp01.dbf
sys@PROD> select 524296192/8192 from dual;
524296192/8192
--------------
64001登入後複製
BBED> d /v offset 44 File: /u01/app/oracle/oradata/PROD/tp01.dbf (5) Block: 1 Offsets: 44 to 63 Dba:0x01400001 ------------------------------------------------------- 00320000 00200000 04000300 00000000 l .2... .......... 00000000 BBED> m /x 00fa0000 44 File: /u01/app/oracle/oradata/PROD/tp01.dbf (5) Block: 1 Offsets: 44 to 63 Dba:0x01400001 ------------------------------------------------------------------------ 00fa0000 00200000 04000300 00000000 00000000
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(3)修改文件号（4--->5）
ub2 kccfhfno @52 0x0004
BBED> d /v offset 52 File: /u01/app/oracle/oradata/PROD/tp01.dbf (5) Block: 1 Offsets: 52 to 71 Dba:0x01400001 ------------------------------------------------------- 04000300 00000000 00000000 00000000 l ................ 00000000 BBED> m /x 05 offset 52 File: /u01/app/oracle/oradata/PROD/tp01.dbf (5) Block: 1 Offsets: 52 to 71 Dba:0x01400001 ------------------------------------------------------------------------ 05000300 00000000 00000000 00000000 00000000
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(4)修改文件创建时SCN
BBED> p kcvfhcrs
struct kcvfhcrs, 8 bytes @100
ub4 kscnbas @100 0x00004b14
ub2 kscnwrp @104 0x0000
sys@PROD> select file#,CREATION_CHANGE# from v$datafile where file#=5;
FILE# CREATION_CHANGE#
---------- ----------------
5 363921
sys@PROD> select to_char('363921','xxxxxxxxxxxxx') from dual;
TO_CHAR('36392
--------------
58d91 ===（倒：918d0500）==》00058d91
BBED> d /v offset 100
File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)
Block: 1 Offsets: 100 to 119 Dba:0x01400001
-------------------------------------------------------
144b0000 00000000 30cf3e32 a41da532 l .K......0?>2¤.￥2
ec4f1900
BBED> m /x 918d offset 100
File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)
Block: 1 Offsets: 100 to 119 Dba:0x01400001
------------------------------------------------------------------------
918d0000 00000000 30cf3e32 a41da532 ec4f1900
BBED> m /x 0500 offset 102
File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)
Block: 1 Offsets: 102 to 121 Dba:0x01400001
------------------------------------------------------------------------
05000000 000030cf 3e32a41d a532ec4f 19000000
BBED> d /v offset 100
File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)
Block: 1 Offsets: 100 to 119 Dba:0x01400001
-------------------------------------------------------
918d0500 00000000 30cf3e32 a41da532 l ........0?>2¤.￥2
ec4f1900登入後複製
(5)修改文件创建时间
ub4 kcvfhcrt @108 0x323ecf30
BBED> p kcvfhcrt
ub4 kcvfhcrt @108 0x323ecf30
sys@PROD> select file#,to_char(CREATION_TIME,'yyyy-mm-dd hh24:mi:ss') createTime,
2 (to_char(CREATION_TIME,'yyyy')-1988)*12*31*24*3600+
3 (to_char(CREATION_TIME,'mm')-1)*31*24*3600+
4 (to_char(CREATION_TIME,'dd')-1)*24*3600+
5 to_char(CREATION_TIME,'hh24')*3600+
6 to_char(CREATION_TIME,'mi')*60+
7 to_char(CREATION_TIME,'ss') createTimeSCN
8 from v$datafile WHERE file# in(4,5);
FILE# CREATETIME CREATETIMESCN
---------- ------------------- -------------
4 2014-03-23 16:17:52 842977072
5 2014-03-29 10:32:22 843474742
sys@PROD> select '4' file#, to_char('842977072','xxxxxxxxxxxxxx') from dual;
F TO_CHAR('842977
- ---------------
4 323ecf30 ===>倒：30cf3e32
sys@PROD> select '5' file#,to_char('843474742','xxxxxxxxxxxxxx') from dual;
sys@PROD> select '5' file#,to_char('843474742','xxxxxxxxxxxxxx') from dual;
F TO_CHAR('843474
- ---------------
5 32466736 ==》36674632
BBED> d /v offset 108
File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)
Block: 1 Offsets: 108 to 127 Dba:0x01400001
-------------------------------------------------------
30cf3e32 a41da532 ec4f1900 00000000 l 0?>2¤.￥2ìO......
d713a532
BBED> m /x 36674632 offset 108
File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)
Block: 1 Offsets: 108 to 127 Dba:0x01400001
------------------------------------------------------------------------
36674632 a41da532 ec4f1900 00000000 d713a532 登入後複製
sword kcvfhtsn @332 4
sys@PROD> select file#,TS# from v$datafile where file# in(4,5);
FILE# TS#
---------- ----------
4 4
5 5
BBED> d /v offset 332
File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)
Block: 1 Offsets: 332 to 351 Dba:0x01400001
-------------------------------------------------------
04000000 05005553 45525300 00000000 l ......USERS.....
00000000 l ....
<16 bytes per line>
BBED> m /x 05 offset 332
File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)
Block: 1 Offsets: 332 to 351 Dba:0x01400001
------------------------------------------------------------------------
05000000 05005553 45525300 00000000 00000000 登入後複製
ub4 kcvfhrfn @368 0x00000004
BBED> d /v offset 368 File: /u01/app/oracle/oradata/PROD/tp01.dbf (5) Block: 1 Offsets: 368 to 387 Dba:0x01400001 ------------------------------------------------------- 04000000 00000000 00000000 00000000 l ................ 00000000 l .... <16 bytes per line> BBED> m /x 05 offset 368 File: /u01/app/oracle/oradata/PROD/tp01.dbf (5) Block: 1 Offsets: 368 to 387 Dba:0x01400001 ------------------------------------------------------------------------ 05000000 00000000 00000000 00000000 00000000
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BBED> p kcvfhtnm
text kcvfhtnm[0] @338 U
text kcvfhtnm[1] @339 S
text kcvfhtnm[2] @340 E
text kcvfhtnm[3] @341 R
text kcvfhtnm[4] @342 S
text kcvfhtnm[5] @343
text kcvfhtnm[6] @344
text kcvfhtnm[7] @345
text kcvfhtnm[8] @346
text kcvfhtnm[9] @347
text kcvfhtnm[10] @348
text kcvfhtnm[11] @349
text kcvfhtnm[12] @350
sys@PROD> select file#,TS# from v$datafile where file# in(4,5);
FILE# TS#
---------- ----------
4 4
5 5
sys@PROD> select TS#,NAME from v$tablespace where ts# in(4,5);
TS# NAME
---------- --------------------------------------------------
4 USERS
5 TP1
BBED> d /v offset 338
File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)
Block: 1 Offsets: 338 to 357 Dba:0x01400001
-------------------------------------------------------
55534552 53000000 00000000 00000000 l USERS...........
00000000
sys@PROD> select dump('USERS',16) from dual;
DUMP('USERS',16)
----------------------------
Typ=96 Len=5: 55,53,45,52,53
sys@PROD> select dump('TP1',16) from dual;
DUMP('TP1',16)
----------------------
Typ=96 Len=3: 54,50,31
BBED> m /x 54503100 offset 338
File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)
Block: 1 Offsets: 338 to 357 Dba:0x01400001
------------------------------------------------------------------------
54503100 53000000 00000000 00000000 00000000
<32 bytes per line>
BBED> m /x 00 offset 342
File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)
Block: 1 Offsets: 342 to 361 Dba:0x01400001
------------------------------------------------------------------------
00000000 00000000 00000000 00000000 00000000
<32 bytes per line>
BBED> d /v offset 338
File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)
Block: 1 Offsets: 338 to 357 Dba:0x01400001
-------------------------------------------------------
54503100 00000000 00000000 00000000 l TP1.............
00000000 登入後複製
ub2 kcvfhtln @336 0x0005
BBED> d /v offset 336 File: /u01/app/oracle/oradata/PROD/tp01.dbf (5) Block: 1 Offsets: 336 to 355 Dba:0x01400001 ------------------------------------------------------- 05005450 31000000 00000000 00000000 l ..TP1........... 00000000 l .... <16 bytes per line> BBED> m /x 03 offset 336 File: /u01/app/oracle/oradata/PROD/tp01.dbf (5) Block: 1 Offsets: 336 to 355 Dba:0x01400001 ------------------------------------------------------------------------ 03005450 31000000 00000000 00000000 00000000 <32 bytes per line>
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(10)检查点
BBED> p kcvfhckp
struct kcvfhckp, 36 bytes @484
struct kcvcpscn, 8 bytes @484
ub4 kscnbas @484 0x0019b1a1 --->1683873
ub2 kscnwrp @488 0x0000
ub4 kcvcptim @492 0x32a59921 -->849713441
ub2 kcvcpthr @496 0x0001
union u, 12 bytes @500
struct kcvcprba, 12 bytes @500
ub4 kcrbaseq @500 0x00000002
ub4 kcrbabno @504 0x000002e0
ub2 kcrbabof @508 0x0010
ub1 kcvcpetb[0] @512 0x02
ub1 kcvcpetb[1] @513 0x00
ub1 kcvcpetb[2] @514 0x00
ub1 kcvcpetb[3] @515 0x00
ub1 kcvcpetb[4] @516 0x00
ub1 kcvcpetb[5] @517 0x00
ub1 kcvcpetb[6] @518 0x00
ub1 kcvcpetb[7] @519 0x00
sys@PROD> select file#,rfile#,CREATION_TIME,checkpoint_change#,unrecoverable_change#,offline_change# from v$datafile;
FILE# RFILE# CREATION_ CHECKPOINT_CHANGE# UNRECOVERABLE_CHANGE# OFFLINE_CHANGE#
---------- ---------- --------- ------------------ --------------------- ---------------
1 1 23-MAR-14 1683873 0 1658859
2 2 23-MAR-14 1683873 0 1658859
3 3 23-MAR-14 1683873 0 1658859
4 4 23-MAR-14 1683873 0 1658859
5 5 29-MAR-14 1684251 0 1658859
sys@PROD> select to_number('19b1a1','xxxxxxxxxxxx') from dual;
TO_NUMBER('19B1A1','XXXXXXXXXXXX')
----------------------------------
1683873
sys@PROD> select to_number('32a59921','xxxxxxxxxxxx') from dual;
TO_NUMBER('32A59921','XXXXXXXXXXXX')
------------------------------------
849713441
sys@PROD> select file#,to_char(CHECKPOINT_TIME,'yyyy-mm-dd hh24:mi:ss') createTime,
2 (to_char(CHECKPOINT_TIME,'yyyy')-1988)*12*31*24*3600+
3 (to_char(CHECKPOINT_TIME,'mm')-1)*31*24*3600+
4 (to_char(CHECKPOINT_TIME,'dd')-1)*24*3600+
5 to_char(CHECKPOINT_TIME,'hh24')*3600+
6 to_char(CHECKPOINT_TIME,'mi')*60+
7 to_char(CHECKPOINT_TIME,'ss') createTimeSCN
8 from v$datafile WHERE file# in(4,5);
FILE# CREATETIME CREATETIMESCN
---------- ------------------- -------------
4 2014-06-08 15:30:41 849713441
5 2014-06-08 15:38:33 849713913
sys@PROD> sys@PROD> select to_char('1684251','xxxxxxxxxxxxxxx') from dual;
TO_CHAR('1684251
----------------
19b31b ====>真正5号文件的检查点SCN
sys@PROD> select to_char('849713913','xxxxxxxxxxxxxxx') from dual;
TO_CHAR('8497139
----------------
32a59af9 ====>真正5号文件的检查点时间
ub4 kscnbas @484 0x0019b1a1 ====>真正5号文件的检查点SCN 19b31b (倒：1bb319)
ub4 kcvcptim @492 0x32a59921 ====>真正5号文件的检查点时间32a59af9（倒：f99aa532）
BBED> d /v offset 484
File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)
Block: 1 Offsets: 484 to 503 Dba:0x01400001
-------------------------------------------------------
a1b11900 00000000 2199a532 01000000 l ?±......!.￥2....
02000000
BBED> m /x 1bb319 offset 484
File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)
Block: 1 Offsets: 484 to 503 Dba:0x01400001
------------------------------------------------------------------------
1bb31900 00000000 2199a532 01000000 02000000
BBED> d /v offset 492
File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)
Block: 1 Offsets: 492 to 511 Dba:0x01400001
-------------------------------------------------------
2199a532 01000000 02000000 e0020000 l !.￥2........à...
10007261
BBED> m /x f99a offset 492
File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)
Block: 1 Offsets: 492 to 511 Dba:0x01400001
------------------------------------------------------------------------
f99aa532 01000000 02000000 e0020000 10007261
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##################校验块
BBED> sum apply Check value for File 5, Block 1: current = 0x4a10, required = 0x4a10 BBED> verify DBVERIFY - Verification starting FILE = /u01/app/oracle/oradata/PROD/tp01.dbf BLOCK = 1 DBVERIFY - Verification complete Total Blocks Examined : 1 Total Blocks Processed (Data) : 0 Total Blocks Failing (Data) : 0 Total Blocks Processed (Index): 0 Total Blocks Failing (Index): 0 Total Blocks Empty : 0 Total Blocks Marked Corrupt : 0 Total Blocks Influx : 0 Message 531 not found; product=RDBMS; facility=BBED
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######################检查物理坏块
[oracle@jfdb PROD]$ dbv file=tp01.dbf start=1 end=2 DBVERIFY: Release 11.2.0.3.0 - Production on Sun Jun 8 21:48:37 2014 Copyright (c) 1982, 2011, Oracle and/or its affiliates. All rights reserved. DBVERIFY - Verification starting : FILE = /u01/app/oracle/oradata/PROD/tp01.dbf DBVERIFY - Verification complete Total Pages Examined : 2 Total Pages Processed (Data) : 0 Total Pages Failing (Data) : 0 Total Pages Processed (Index): 0 Total Pages Failing (Index): 0 Total Pages Processed (Other): 2 Total Pages Processed (Seg) : 0 Total Pages Failing (Seg) : 0 Total Pages Empty : 0 Total Pages Marked Corrupt : 0 Total Pages Influx : 0 Total Pages Encrypted : 0 Highest block SCN : 1687542 (0.1687542)
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############打开数据库报错
sys@PROD> shutdown abort; ORACLE instance shut down. sys@PROD> startup ORACLE instance started. Total System Global Area 939495424 bytes Fixed Size 2233960 bytes Variable Size 251660696 bytes Database Buffers 679477248 bytes Redo Buffers 6123520 bytes Database mounted. ORA-01122: database file 5 failed verification check ORA-01110: data file 5: '/u01/app/oracle/oradata/PROD/tp01.dbf' ORA-01207: file is more recent than control file - old control file
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###########怀疑检查点计数器，这里我先用BBED（方法1重建控制文件，方法2利用BBED修改计算器）
ub4 kcvfhcpc @140 0x00000102
idle> alter session set events 'immediate trace name controlf level 8';
Session altered.
DATA FILE #5:
name #4: /u01/app/oracle/oradata/PROD/tp01.dbf
creation size=0 block size=8192 status=0xe head=4 tail=4 dup=1
tablespace 5, index=5 krfil=5 prev_file=0
unrecoverable scn: 0x0000.00000000 01/01/1988 00:00:00
Checkpoint cnt:226 scn: 0x0000.0019b31b 06/08/2014 15:38:33
Stop scn: 0xffff.ffffffff 06/08/2014 07:44:07
Creation Checkpointed at scn: 0x0000.00058d91 03/29/2014 10:32:22
thread:0 rba:(0x0.0.0)
sys@PROD> select to_char('226','xxxxxxxxxxxxx') from dual;
TO_CHAR('226',
--------------
e2
sys@PROD> select to_char('225','xxxxxxxxxxxxx') from dual;
TO_CHAR('225',
--------------
e1
BBED> d /v offset 140
File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)
Block: 1 Offsets: 140 to 159 Dba:0x01400001
-------------------------------------------------------
02010000 8bc6a532 01010000 b24f1900 l .....?￥2....2O..
00000000
BBED> m /x e200 offset 140
File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)
Block: 1 Offsets: 140 to 159 Dba:0x01400001
------------------------------------------------------------------------
e2000000 8bc6a532 01010000 b24f1900 00000000
<32 bytes per line>
BBED> d /v offset 148
File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)
Block: 1 Offsets: 148 to 167 Dba:0x01400001
-------------------------------------------------------
01010000 b24f1900 00000000 d713a532 l ....2O......×.￥2
01000000 l ....
<16 bytes per line>
BBED> m /x e100 offset 148
File: /u01/app/oracle/oradata/PROD/tp01.dbf (5)
Block: 1 Offsets: 148 to 167 Dba:0x01400001
------------------------------------------------------------------------
e1000000 b24f1900 00000000 d713a532 01000000
<32 bytes per line>
BBED> sum apply
Check value for File 5, Block 1:
current = 0x4a10, required = 0x4a10
BBED> verify
DBVERIFY - Verification starting
FILE = /u01/app/oracle/oradata/PROD/tp01.dbf
BLOCK = 1
DBVERIFY - Verification complete
Total Blocks Examined : 1
Total Blocks Processed (Data) : 0
Total Blocks Failing (Data) : 0
Total Blocks Processed (Index): 0
Total Blocks Failing (Index): 0
Total Blocks Empty : 0
Total Blocks Marked Corrupt : 0
Total Blocks Influx : 0
Message 531 not found; product=RDBMS; facility=BBED登入後複製
##########再次打开库，OK!
sys@PROD> select status from v$instance; STATUS ------------ MOUNTED sys@PROD> alter database open; Database altered.
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###############################修改数据文件头的注意点：
1、修改数据的DBA,rdba_kcbh
2、修改文件的大小，kccfhfsz
3、修改文件号，kccfhfno
4、修改文件创建时SCN，kcvfhcrs
5、修改文件创建时间，kcvfhcrt
6、修改表空间号，kcvfhtsn
7、修改相对文件号，kcvfhrfn
8、修改表空间的名称， kcvfhtnm
9、修改表空间的长度，kcvfhtln
10、修改检查点的SCN，kcvfhckp
11、修改检查点的时间，kcvcptim
12、修改检查点的计数器，kcvfhcpc
13、修改检查点的控制文件备份的计数器， kcvfhccc
14、如果你修改是1号文件的1号块他的root rdba的地针是指向了bootstrap$
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DDREASE是一種用於從檔案或區塊裝置(如硬碟、SSD、RAM磁碟、CD、DVD和USB儲存裝置)復原資料的工具。它將資料從一個區塊設備複製到另一個區塊設備，留下損壞的資料區塊，只移動好的資料區塊。 ddreasue是一種強大的恢復工具，完全自動化，因為它在恢復操作期間不需要任何干擾。此外，由於有了ddasue地圖文件，它可以隨時停止和恢復。 DDREASE的其他主要功能如下：它不會覆寫恢復的數據，但會在迭代恢復的情況下填補空白。但是，如果指示工具明確執行此操作，則可以將其截斷。將資料從多個檔案或區塊還原到單
開源！超越ZoeDepth！ DepthFM：快速且精確的單目深度估計！
Apr 03, 2024 pm 12:04 PM
0.這篇文章乾了啥？提出了DepthFM：一個多功能且快速的最先進的生成式單目深度估計模型。除了傳統的深度估計任務外，DepthFM還展示了在深度修復等下游任務中的最先進能力。 DepthFM效率高，可以在少數推理步驟內合成深度圖。以下一起來閱讀這項工作~1.論文資訊標題：DepthFM:FastMonocularDepthEstimationwithFlowMatching作者：MingGui,JohannesS.Fischer,UlrichPrestel,PingchuanMa,Dmytr
Google狂喜：JAX性能超越Pytorch、TensorFlow！或成GPU推理訓練最快選擇
Apr 01, 2024 pm 07:46 PM
谷歌力推的JAX在最近的基準測試中表現已經超過Pytorch和TensorFlow，7項指標排名第一。而且測試並不是JAX性能表現最好的TPU上完成的。雖然現在在開發者中，Pytorch依然比Tensorflow更受歡迎。但未來，也許有更多的大型模型會基於JAX平台進行訓練和運行。模型最近，Keras團隊為三個後端（TensorFlow、JAX、PyTorch）與原生PyTorch實作以及搭配TensorFlow的Keras2進行了基準測試。首先，他們為生成式和非生成式人工智慧任務選擇了一組主流
出現0x80004005錯誤代碼怎麼辦 小編教你0x80004005錯誤代碼解決方法
Mar 21, 2024 pm 09:17 PM
在電腦中刪除或解壓縮資料夾，時有時會彈出提示對話框“錯誤0x80004005：未指定錯誤”，如果遇到這中情況應該怎麼解決呢？提示錯誤碼0x80004005的原因其實很多，但大部分因為病毒導致，我們可以重新註冊dll來解決問題，下面，小編給大夥講解0x80004005錯誤代碼處理經驗。有使用者在使用電腦時出現錯誤代碼0X80004005的提示，0x80004005錯誤主要是由於電腦沒有正確註冊某些動態連結庫文件，或電腦與Internet之間存在不允許的HTTPS連接防火牆所引起。那麼如何
iPhone上的蜂窩數據網路速度慢：修復
May 03, 2024 pm 09:01 PM
在iPhone上面臨滯後，緩慢的行動數據連線？通常，手機上蜂窩互聯網的強度取決於幾個因素，例如區域、蜂窩網絡類型、漫遊類型等。您可以採取一些措施來獲得更快、更可靠的蜂窩網路連線。修復1–強制重啟iPhone有時，強制重啟設備只會重置許多內容，包括蜂窩網路連線。步驟1–只需按一次音量調高鍵並放開即可。接下來，按降低音量鍵並再次釋放它。步驟2–過程的下一部分是按住右側的按鈕。讓iPhone完成重啟。啟用蜂窩數據並檢查網路速度。再次檢查修復2–更改資料模式雖然5G提供了更好的網路速度，但在訊號較弱
特斯拉機器人進廠打工，馬斯克：手的自由度今年將達到22個！
May 06, 2024 pm 04:13 PM
特斯拉機器人Optimus最新影片出爐，已經可以在工廠裡打工了。正常速度下，它分揀電池（特斯拉的4680電池）是這樣的：官方還放出了20倍速下的樣子——在小小的「工位」上，揀啊揀啊揀：這次放出的影片亮點之一在於Optimus在廠子裡完成這項工作，是完全自主的，全程沒有人為的干預。而且在Optimus的視角之下，它還可以把放歪了的電池重新撿起來放置，主打一個自動糾錯：對於Optimus的手，英偉達科學家JimFan給出了高度的評價：Optimus的手是全球五指機器人裡最靈巧的之一。它的手不僅有觸覺
阿里7B多模態文件理解大模型拿下新SOTA
Apr 02, 2024 am 11:31 AM
多模態文件理解能力新SOTA！阿里mPLUG團隊發布最新開源工作mPLUG-DocOwl1.5，針對高解析度圖片文字辨識、通用文件結構理解、指令遵循、外部知識引入四大挑戰，提出了一系列解決方案。話不多說，先來看效果。複雜結構的圖表一鍵識別轉換為Markdown格式：不同樣式的圖表都可以：更細節的文字識別和定位也能輕鬆搞定：還能對文檔理解給出詳細解釋：要知道，“文檔理解”目前是大語言模型實現落地的一個重要場景，市面上有許多輔助文檔閱讀的產品，有的主要透過OCR系統進行文字識別，配合LLM進行文字理
超級智能體生命力覺醒！可自我更新的AI來了，媽媽再也不用擔心資料瓶頸難題
Apr 29, 2024 pm 06:55 PM
哭死啊，全球狂煉大模型，一網路的資料不夠用，根本不夠用。訓練模型搞得跟《飢餓遊戲》似的，全球AI研究者，都在苦惱怎麼才能餵飽這群資料大胃王。尤其在多模態任務中，這問題尤其突出。一籌莫展之際，來自人大系的初創團隊，用自家的新模型，率先在國內把「模型生成數據自己餵自己」變成了現實。而且還是理解側和生成側雙管齊下，兩側都能產生高品質、多模態的新數據，對模型本身進行數據反哺。模型是啥？中關村論壇上剛露面的多模態大模型Awaker1.0。團隊是誰？智子引擎。由人大高瓴人工智慧學院博士生高一鑷創立，高
