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标题：ORA-704 ORA-604 ORA-1426故障分析处理
作者：惜分飞©版权所有[未经本人同意,不得以任何形式转载,否则有进一步追究法律责任的权利.]
服务器异常断电,通过分析alert日志发现现场的一些操作,数据库启动最初报ORA-00322 ORA-00312错
Tue Sep 23 20:06:52 2025 Errors in file d:\app\administrator\diag\rdbms\orcl\orcl\trace\orcl_m000_6056.trc: ORA-00322: log 1 of thread 1 is not current copy ORA-00312: online log 1 thread 1: 'D:\APP\ADMINISTRATOR\ORADATA\ORCL\REDO01.LOG' Errors in file d:\app\administrator\diag\rdbms\orcl\orcl\trace\orcl_m000_6056.trc: ORA-00322: log 2 of thread 1 is not current copy ORA-00312: online log 2 thread 1: 'D:\APP\ADMINISTRATOR\ORADATA\ORCL\REDO02.LOG' Errors in file d:\app\administrator\diag\rdbms\orcl\orcl\trace\orcl_m000_6056.trc: ORA-00322: log 3 of thread 1 is not current copy ORA-00312: online log 3 thread 1: 'D:\APP\ADMINISTRATOR\ORADATA\ORCL\REDO03.LOG'
通过隐含参数强制拉库报ORA-00704 ORA-00604 ORA-01426错误
Tue Sep 23 23:53:52 2025 alter database open resetlogs RESETLOGS is being done without consistancy checks. This may result in a corrupted database. The database should be recreated. RESETLOGS after incomplete recovery UNTIL CHANGE 444541390 Resetting resetlogs activation ID 1705450279 (0x65a71b27) Online log D:\APP\ADMINISTRATOR\ORADATA\ORCL\REDO03.LOG: Thread 1 Group 3 was previously cleared Tue Sep 23 23:53:53 2025 Setting recovery target incarnation to 6 Tue Sep 23 23:53:53 2025 Assigning activation ID 1740400222 (0x67bc665e) Thread 1 opened at log sequence 1 Current log# 1 seq# 1 mem# 0: D:\APP\ADMINISTRATOR\ORADATA\ORCL\REDO01.LOG Successful open of redo thread 1 MTTR advisory is disabled because FAST_START_MTTR_TARGET is not set Tue Sep 23 23:53:53 2025 SMON: enabling cache recovery Errors in file d:\app\administrator\diag\rdbms\orcl\orcl\trace\orcl_ora_7792.trc: ORA-00704: 引导程序进程失败 ORA-00604: 递归 SQL 级别 1 出现错误 ORA-01426: 数字溢出 Errors in file d:\app\administrator\diag\rdbms\orcl\orcl\trace\orcl_ora_7792.trc: ORA-00704: 引导程序进程失败 ORA-00604: 递归 SQL 级别 1 出现错误 ORA-01426: 数字溢出 Error 704 happened during db open, shutting down database USER (ospid: 7792): terminating the instance due to error 704 Instance terminated by USER, pid = 7792 ORA-1092 signalled during: alter database open resetlogs...
我接手故障之后尝试启动库,依旧报ORA-01092 ORA-00704 ORA-00604 ORA-01426错误无法启动库
C:\Users\XFF>sqlplus / as sysdba SQL*Plus: Release 11.2.0.1.0 Production on 星期四 9月 25 22:50:21 2025 Copyright (c) 1982, 2010, Oracle. All rights reserved. 连接到: Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production With the Partitioning, OLAP, Data Mining and Real Application Testing options SQL> recover database; 完成介质恢复。 SQL> alter database open ; alter database open * 第 1 行出现错误: ORA-01092: ORACLE instance terminated. Disconnection forced ORA-00704: bootstrap process failure ORA-00604: error occurred at recursive SQL level 1 ORA-01426: numeric overflow 进程 ID: 18152 会话 ID: 14 序列号: 1
这个报错是number数据溢出,那就可能是由于number类型的数据值不对,通过对启动过程跟踪
PARSING IN CURSOR #5 len=74 dep=1 uid=0 oct=3 lid=0 tim=1677733680660 hv=3309402135
ad='7fffeef07300' sqlid='5n1fs4m2n2y0r'
select pos#,intcol#,col#,spare1,bo#,spare2,spare3 from icol$ where obj#=:1
END OF STMT
BINDS #5:
Bind#0
oacdty=02 mxl=22(22) mxlc=00 mal=00 scl=00 pre=00
oacflg=08 fl2=0001 frm=00 csi=00 siz=24 off=0
kxsbbbfp=1c1d70b8 bln=22 avl=03 flg=05
value=425
EXEC #5:c=0,e=69,p=0,cr=0,cu=0,mis=0,r=0,dep=1,og=4,plh=299250003,tim=1677733680725
WAIT #5: nam='db file sequential read' ela= 152 file#=1 block#=386 blocks=1 obj#=42 tim=1677733680892
FETCH #5:c=0,e=178,p=1,cr=3,cu=0,mis=0,r=1,dep=1,og=4,plh=299250003,tim=1677733680913
FETCH #5:c=0,e=3,p=0,cr=2,cu=0,mis=0,r=1,dep=1,og=4,plh=299250003,tim=1677733680931
FETCH #5:c=0,e=2,p=0,cr=1,cu=0,mis=0,r=0,dep=1,og=4,plh=299250003,tim=1677733680943
CLOSE #5:c=0,e=1,dep=1,type=3,tim=1677733680957
*** 2025-09-25 21:29:42.634
dbkedDefDump(): Starting a non-incident diagnostic dump (flags=0x0, level=10, mask=0x0)
----- Error Stack Dump -----
ORA-01426: 数字溢出
----- Current SQL Statement for this session (sql_id=bkdusjx00dsmc) -----
select i.obj#,i.ts#,i.file#,i.block#,i.intcols,i.type#,i.flags, i.property,i.pctfree$,i.initrans,
i.maxtrans,i.blevel,i.leafcnt,i.distkey, i.lblkkey,i.dblkkey,i.clufac,i.cols,i.analyzetime,i.samplesize,
i.dataobj#, nvl(i.degree,1),nvl(i.instances,1),i.rowcnt,mod(i.pctthres$,256),i.indmethod#,
i.trunccnt,nvl(c.unicols,0),nvl(c.deferrable#+c.valid#,0), nvl(i.spare1,i.intcols),i.spare4,
spare2,spare6, decode(i.pctthres$,null,null, mod(trunc(i.pctthres$/256),256))
from ind$ i, (select enabled, min(cols) unicols, min(to_number(bitand(defer,1)))
deferrable#, min(to_number(bitand(defer,4))) valid# from cdef$ where obj#=:1 and enabled > 1 group by enabled)
c where i.obj#=c.enabled(+) and i.bo#=:1 order by i.obj#
通过上述可以是在执行上述sql的时候,遭遇异常,进一步查看trace,发现在该block中有异常信息
Block header dump: 0x004000a5
Object id on Block? Y
seg/obj: 0x2 csc: 0x00.10daa102 itc: 2 flg: - typ: 1 - DATA
fsl: 0 fnx: 0x0 ver: 0x01
Itl Xid Uba Flag Lck Scn/Fsc
0x01 0x0006.01b.00000009 0x00c001b2.0003.09 C--- 0 scn 0x0000.000021b5
0x02 0x000a.010.0003827e 0x00c00349.35ea.2f --U- 2 fsc 0x0000.10daa11d
bdba: 0x004000a5
这个部分可以确认,异常对象是dataobj#为2(c_obj#的cluster),rdba为0x004000a5(file 1 block 165),对应的block dump中有以下信息异常
tab 3, row 4, @0x19a6 tl: 366 fb: -CH-FL-- lb: 0x0 cc: 28 cki: 4 col 0: [ 3] c2 05 1b col 1: [ 3] c2 1d 1b col 2: [44] 80 02 c1 02 03 c2 1d 59 01 80 02 c1 03 02 c1 0b 02 c1 03 03 c2 03 38 ff 02 c1 02 03 c2 15 33 01 80 02 c1 02 03 c2 02 3d 04 c3 04 62 col 3: [35] 02 c1 02 02 c1 02 03 c2 17 10 07 78 7c 07 1b 0f 04 24 04 c3 04 62 23 04 c3 04 62 23 02 c1 03 ff ff ff 02 col 4: [193] 03 6c 00 1c 04 03 c2 05 1a 03 c2 05 1a 01 80 02 c1 02 03 c2 1d 51 01 80 02 c1 03 02 c1 0b 02 c1 03 03 c2 03 38 ff 02 c1 02 03 c2 15 33 01 80 02 c1 02 03 c2 02 3d 04 c3 04 5c 3d 02 c1 02 02 c1 02 03 c2 17 13 07 78 7c 07 1b 0f 04 24 04 c3 04 62 23 04 c3 04 62 23 02 c1 03 ff ff ff 02 c1 03 6c 00 1c 02 03 c2 05 16 03 c2 05 16 01 80 02 c1 02 03 c2 1d 11 01 80 02 c1 03 02 c1 0b 02 c1 03 03 c2 03 38 ff 02 c1 04 02 c1 03 02 c1 02 02 c1 02 02 c1 0f 03 c2 19 3b 02 c1 02 02 c1 02 03 c2 19 3b 07 78 7c 07 1b 17 04 23 03 c2 19 3b 03 c2 19 3b 02 c1 03 ff ff ff 02 c1 03 6c 00 1c 01 03 c2 col 5: [ 5] 14 03 c2 05 14 col 6: [ 1] 80 col 7: [ 2] c1 02 col 8: [ 3] c2 1a 35 col 9: [ 1] 80 col 10: [ 2] c1 03 col 11: [ 2] c1 0b col 12: [ 2] c1 03 col 13: [ 3] c2 03 38 col 14: *NULL* col 15: [ 2] c1 02 col 16: [ 3] c2 15 33 col 17: [ 2] c1 02 col 18: [ 2] c1 02 col 19: [ 2] c1 05 col 20: [ 3] c2 08 4c col 21: [ 2] c1 02 col 22: [ 2] c1 02 col 23: [ 2] c1 05 col 24: [ 7] 78 6e 03 1e 0b 12 32 col 25: [ 3] c2 08 4c col 26: [ 3] c2 08 4c col 27: [ 2] c1 03
这个里面显示是c_obj#这个簇中的第三个表第四行记录,通过查询正常库,确认第三个表是什么对象
SQL> select obj# from tab$ where dataobj#=2 and tab#=3;
OBJ#
----------
19
SQL> select name from obj$ where obj#=19;
NAME
------------------------------
IND$
通过上述可以去人tab 3为ind$对象,进一步分析ind$的表结构
SQL> desc ind$ 名称 是否为空? 类型 ----------------------------------------- -------- ---------------------------- OBJ# NOT NULL NUMBER DATAOBJ# NUMBER TS# NOT NULL NUMBER FILE# NOT NULL NUMBER BLOCK# NOT NULL NUMBER BO# NOT NULL NUMBER INDMETHOD# NOT NULL NUMBER COLS NOT NULL NUMBER PCTFREE$ NOT NULL NUMBER INITRANS NOT NULL NUMBER MAXTRANS NOT NULL NUMBER PCTTHRES$ NUMBER TYPE# NOT NULL NUMBER FLAGS NOT NULL NUMBER PROPERTY NOT NULL NUMBER BLEVEL NUMBER LEAFCNT NUMBER DISTKEY NUMBER LBLKKEY NUMBER DBLKKEY NUMBER CLUFAC NUMBER ANALYZETIME DATE SAMPLESIZE NUMBER ROWCNT NUMBER INTCOLS NOT NULL NUMBER DEGREE NUMBER INSTANCES NUMBER TRUNCCNT NUMBER SPARE1 NUMBER SPARE2 NUMBER SPARE3 NUMBER SPARE4 VARCHAR2(1000) SPARE5 VARCHAR2(1000) SPARE6 DATE
对dump出来的block记录进行转换为实际值
SQL> select utl_raw.cast_to_number('c2051b') value from dual;
VALUE
----------
426
SQL> select utl_raw.cast_to_number('c21d1b') value from dual;
VALUE
----------
2826
SQL> select utl_raw.cast_to_number('02c10202c10203c2171007787c071b0f042404c304622304c304622302c103ffffff02')
2 value from dual;
select utl_raw.cast_to_number('02c10202c10203c2171007787c071b0f042404c304622304c304622302c103ffffff02')
*
第 1 行出现错误:
ORA-06502: PL/SQL: 数字或值错误
ORA-06512: 在 "SYS.UTL_RAW", line 388
通过上述分析证明,在ind$表的obj#为426行的记录的第三列无法转换为正常number记录,证明该值异常,从而导致数据库在执行sql_id=bkdusjx00dsmc这个sql的时候报错,从而无法open库,dbv对system文件进行检测发现有一些逻辑层面损坏
C:\Users\XFF>dbv file=H:\BaiduNetdisk\orcl\SYSTEM01.DBF
DBVERIFY: Release 11.2.0.4.0 - Production on 星期四 9月 25 19:17:17 2025
Copyright (c) 1982, 2011, Oracle and/or its affiliates. All rights reserved.
DBVERIFY - 开始验证: FILE = H:\BAIDUNETDISK\ORCL\SYSTEM01.DBF
Block Checking: DBA = 4194469, Block Type = KTB-managed data block
data header at 0x5c2425c
kdbchk: row does not end within block
table=1 slot=0
len=923 offset=7757 dtl=8096 aclen=923
页 165 失败, 校验代码为 6103
itl[2] has higher commit scn(0x0000.000ac920) than block scn (0x0000.000a4a37)
页 21478 失败, 校验代码为 6056
Block Checking: DBA = 4263330, Block Type = KTB-managed data block
**** row 100: row length 65627 past end of block
**** row 100: row skipped so other stats may be wrong
**** row 102: key out of order
**** row 102: lock value 4 is larger than maximum itl 2
**** row 102: bad flag value 193
**** row 105: key out of order
**** row 105: lock value 4 is larger than maximum itl 2
**** row 105: bad flag value 193
**** row 106: row length 65537 past end of block
**** row 106: row skipped so other stats may be wrong
**** row 108: row length 65627 past end of block
**** row 108: row skipped so other stats may be wrong
**** row 109: key out of order
**** row 109: lock value 4 is larger than maximum itl 2
**** row 109: bad flag value 193
**** row 110: key out of order
**** row 110: lock value 239 is larger than maximum itl 2
**** row 112: row length 65627 past end of block
**** row 112: row skipped so other stats may be wrong
**** row 113: key out of order
**** row 113: lock value 4 is larger than maximum itl 2
**** row 113: bad flag value 193
**** row 114: row length 65537 past end of block
**** row 114: row skipped so other stats may be wrong
**** row 116: key out of order
**** row 116: lock value 4 is larger than maximum itl 2
**** row 116: bad flag value 193
**** key (begin=0x1a14, len=17) overlaps with another
begin = 0x1a1c len = 11
---- end index block validation
页 69026 失败, 校验代码为 6401
Block Checking: DBA = 4263331, Block Type = KTB-managed data block
**** row 121: row offset 3123 out of valid range
**** row 122: row offset 3106 out of valid range
**** row 123: lock value 214 is larger than maximum itl 2
**** row 123: bad flag value 128
**** row 124: row length 65537 past end of block
**** row 124: row skipped so other stats may be wrong
**** row 125: key out of order
**** row 129: row offset 2979 out of valid range
**** row 130: row offset 2962 out of valid range
**** row 131: row offset 3225 out of valid range
**** row 135: committed with rsl and/or ras flag
**** row 136: key out of order
**** row 136: lock value 100 is larger than maximum itl 2
**** row 137: lock value 193 is larger than maximum itl 2
**** row 141: row length 65537 past end of block
**** row 141: row skipped so other stats may be wrong
**** row 142: rsl is 0 with ras flag
**** row 143: key out of order
**** row 143: lock value 195 is larger than maximum itl 2
**** row 147: key out of order
**** row 149: key out of order
**** row 154: key out of order
**** row 154: lock value 72 is larger than maximum itl 2
**** row 155: key out of order
**** row 155: lock value 73 is larger than maximum itl 2
**** row 157: key out of order
**** row 157: lock value 195 is larger than maximum itl 2
**** row 159: row offset 8168 out of valid range
**** row 161: row offset 8138 out of valid range
**** row 163: row length 65943 past end of block
**** row 163: row skipped so other stats may be wrong
**** actual free space = 2756 < kdxcoavs = 3155
**** key (begin=0x11fa, len=17) overlaps with another
begin = 0x1209 len = 9
---- end index block validation
页 69027 失败, 校验代码为 6401
itl[1] has higher commit scn(0x0000.000c021f) than block scn (0x0000.0009a123)
页 72609 失败, 校验代码为 6056
Block Checking: DBA = 4273153, Block Type = KTB-managed data block
data header at 0x5ac525c
kdbchk: row locked by non-existent transaction
table=0 slot=93
lockid=3 ktbbhitc=2
页 78849 失败, 校验代码为 6101
Block Checking: DBA = 4273154, Block Type = KTB-managed data block
data header at 0x5ac725c
kdbchk: bad row offset slot 113 offs 473 fseo 474 dtl 8168 bhs 72
页 78850 失败, 校验代码为 6135
Block Checking: DBA = 4273155, Block Type = KTB-managed data block
data header at 0x5ac925c
kdbchk: bad row offset slot 17 offs 342 fseo 394 dtl 8168 bhs 72
页 78851 失败, 校验代码为 6135
Block Checking: DBA = 4273185, Block Type = KTB-managed data block
data header at 0x5b0525c
kdbchk: row locked by non-existent transaction
table=0 slot=14
lockid=4 ktbbhitc=2
页 78881 失败, 校验代码为 6101
Block Checking: DBA = 4273189, Block Type = KTB-managed data block
data header at 0x5b0d25c
kdbchk: row locked by non-existent transaction
table=0 slot=0
lockid=2 ktbbhitc=2
页 78885 失败, 校验代码为 6101
Block Checking: DBA = 4273192, Block Type = KTB-managed data block
data header at 0x5b1325c
kdbchk: bad row offset slot 62 offs 569 fseo 1122 dtl 8168 bhs 72
页 78888 失败, 校验代码为 6135
Block Checking: DBA = 4282166, Block Type = KTB-managed data block
**** row 0: row offset 1457 out of valid range
**** row 1: row offset 1440 out of valid range
**** row 2: row offset 1423 out of valid range
**** row 3: row offset 1406 out of valid range
**** row 4: row offset 1389 out of valid range
**** row 5: row offset 1372 out of valid range
**** row 6: row offset 1355 out of valid range
**** row 7: row offset 1338 out of valid range
**** row 25: row offset 3055 out of valid range
**** row 26: row offset 3038 out of valid range
**** row 27: row offset 3021 out of valid range
**** row 28: row offset 3004 out of valid range
**** row 29: row offset 2987 out of valid range
**** row 30: row offset 2970 out of valid range
**** row 31: row offset 2953 out of valid range
**** row 32: row offset 2936 out of valid range
**** row 33: row offset 2919 out of valid range
**** row 34: row offset 2902 out of valid range
**** row 35: row offset 2885 out of valid range
**** row 36: row offset 2868 out of valid range
**** row 37: row offset 2851 out of valid range
**** row 38: row offset 2834 out of valid range
**** row 39: row offset 1321 out of valid range
**** row 40: row offset 2817 out of valid range
**** row 41: row offset 2800 out of valid range
**** row 42: row offset 2783 out of valid range
**** row 43: row offset 2766 out of valid range
**** row 44: row offset 2749 out of valid range
**** row 45: row offset 2732 out of valid range
**** row 46: row offset 2715 out of valid range
**** row 47: row offset 2698 out of valid range
**** row 48: row offset 2681 out of valid range
**** row 49: row offset 2664 out of valid range
**** row 50: row offset 2647 out of valid range
**** row 51: row offset 2630 out of valid range
**** row 52: row offset 2613 out of valid range
**** row 53: row offset 2596 out of valid range
**** row 54: row offset 2579 out of valid range
**** row 55: row offset 2562 out of valid range
**** row 56: row offset 2545 out of valid range
**** row 57: row offset 2528 out of valid range
**** row 58: row offset 2511 out of valid range
**** row 59: row offset 2494 out of valid range
**** row 60: row offset 2477 out of valid range
**** row 61: row offset 2460 out of valid range
**** row 62: row offset 2443 out of valid range
**** row 63: row offset 2426 out of valid range
**** row 64: row offset 2409 out of valid range
**** row 65: row offset 2392 out of valid range
**** row 66: row offset 2375 out of valid range
**** row 67: row offset 2358 out of valid range
**** row 68: row offset 2341 out of valid range
**** row 69: row offset 2324 out of valid range
**** row 70: row offset 2307 out of valid range
**** row 71: row offset 2290 out of valid range
**** row 72: row offset 2273 out of valid range
**** row 73: row offset 2256 out of valid range
**** row 74: row offset 2239 out of valid range
**** row 75: row offset 2222 out of valid range
**** row 76: row offset 2205 out of valid range
**** row 77: row offset 2188 out of valid range
**** row 78: row offset 2171 out of valid range
**** row 79: row offset 2154 out of valid range
**** row 80: row offset 2137 out of valid range
**** row 81: row offset 2120 out of valid range
**** row 82: row offset 2103 out of valid range
**** row 83: row offset 2086 out of valid range
**** row 84: row offset 2069 out of valid range
**** row 85: row offset 2052 out of valid range
**** row 86: row offset 2035 out of valid range
**** row 87: row offset 2018 out of valid range
**** row 88: row offset 2001 out of valid range
**** row 89: row offset 1984 out of valid range
**** row 90: row offset 1967 out of valid range
**** row 91: row offset 1950 out of valid range
**** row 92: row offset 1933 out of valid range
**** row 93: row offset 1916 out of valid range
**** row 94: row offset 1899 out of valid range
**** row 95: row offset 1882 out of valid range
**** row 96: row offset 1865 out of valid range
**** row 97: row offset 1848 out of valid range
**** row 98: row offset 1831 out of valid range
**** row 99: row offset 1814 out of valid range
**** row 100: row offset 1797 out of valid range
**** row 101: row offset 1780 out of valid range
**** row 102: row offset 1763 out of valid range
**** row 103: row offset 1746 out of valid range
**** row 104: row offset 1729 out of valid range
**** row 105: row offset 1712 out of valid range
**** row 106: row offset 1695 out of valid range
**** row 107: row offset 1678 out of valid range
**** row 108: row offset 1661 out of valid range
**** row 109: row offset 1644 out of valid range
**** row 110: row offset 1627 out of valid range
**** row 111: row offset 1610 out of valid range
**** row 112: row offset 1593 out of valid range
**** row 113: row offset 1576 out of valid range
**** row 114: row offset 1559 out of valid range
**** row 115: row offset 1542 out of valid range
**** row 116: row offset 1525 out of valid range
**** row 117: row offset 1508 out of valid range
**** row 118: row offset 1491 out of valid range
**** row 119: row offset 1474 out of valid range
**** actual rows locked by itl 2 = 95 != # in trans. header = 198
**** actual rows marked deleted = 95 != kdxlende = 123
---- end index block validation
页 87862 失败, 校验代码为 6401
Block Checking: DBA = 4282170, Block Type = KTB-managed data block
**** kdxcofbo = 434 != 590
---- end index block validation
页 87866 失败, 校验代码为 6401
Block Checking: DBA = 4301433, Block Type = KTB-managed data block
data header at 0x5bb525c
kdbchk: avsp(899) > tosp(867)
页 107129 失败, 校验代码为 6128
DBVERIFY - 验证完成
检查的页总数: 956160
处理的页总数 (数据): 919530
失败的页总数 (数据): 10
处理的页总数 (索引): 13114
失败的页总数 (索引): 4
处理的页总数 (其他): 3222
处理的总页数 (段) : 1
失败的总页数 (段) : 0
空的页总数: 20294
标记为损坏的总页数: 0
流入的页总数: 0
加密的总页数 : 0
最高块 SCN : 443681161 (0.443681161)
基于上述情况,现在基本上可以确定是由于datafile 1 block 165中的ind$记录的第四行出现损坏,导致数据库无法正常查询ind$记录,从而使得数据库无法open.已经定位到该问题了,处理起来相对比较简单,使用bbed对其进行修复,让数据库可以正常查询ind$表记录,从而正常open库
SQL> recover database; 完成介质恢复。 SQL> shutdown immediate; ORA-01109: ?????? 已经卸载数据库。 ORACLE 例程已经关闭。 SQL> startup mount pfile='d:/pfile.txt' ORACLE 例程已经启动。 Total System Global Area 4275781632 bytes Fixed Size 2182592 bytes Variable Size 822084160 bytes Database Buffers 3439329280 bytes Redo Buffers 12185600 bytes 数据库装载完毕。 SQL> alter database open; 数据库已更改。
然后到粗数据,完成本次恢复任务.
