ORA-600 [] 错误解析
ERROR:
Format: ORA-600 [] [a] [b]
VERSIONS:
versions 6.0 to 12.1
DESCRIPTION:
A mismatch has been detected between Redo records and Rollback (Undo)
records.
We are validating the Undo block sequence number in the undo block against
the Redo block sequence number relating to the change being applied.
This error is reported when this validation fails.
ARGUMENTS:
Arg [a] Undo record seq number
Arg [b] Redo record seq number
ORA-600 [4193] 错误解析
人为构造ORA-600 [4193]错误(Cont…)
SQL> select HEADER_FILE,HEADER_BLOCK from dba_segments where segment_name='SYSTEM';HEADER_FILE HEADER_BLOCK
----------- ------------
1 128
SQL> alter system dump datafile 1 block 128;
System altered.
SQL> select VALUE from v$diag_info where name='Default Trace File';
VALUE
--------------------------------------------------------------------------------
/u01/app/oracle/diag/rdbms/orcl/orcl/trace/orcl_ora_8493.trc
Extent Control Header
-----------------------------------------------------------------
Extent Header:: spare1: 0 spare2: 0 #extents: 6 #blocks: 47
last map 0x00000000 #maps: 0 offset: 4128
Highwater:: 0x00400229 ext#: 5 blk#: 1 ext size: 8
#blocks in seg. hdr's freelists: 0
#blocks below: 0
mapblk 0x00000000 offset: 5
Unlocked
Map Header:: next 0x00000000 #extents: 6 obj#: 0 flag: 0x40000000
Extent Map
-----------------------------------------------------------------
0x00400081 length: 7
0x00400088 length: 8
0x00400210 length: 8
0x00400218 length: 8
0x00400220 length: 8
0x00400228 length: 8 TRN CTL:: seq: 0x001d chd: 0x003e ctl: 0x0048 inc: 0x00000000 nfb: 0x0001
mgc: 0x8002 xts: 0x0068 flg: 0x0001 opt: 2147483646 (0x7ffffffe)
uba: 0x00400229.001d.12 scn: 0x0000.0096025c
Version: 0x01
FREE BLOCK POOL::
uba: 0x00400229.001d.12 ext: 0x5 spc: 0xb72
uba: 0x00000000.0018.34 ext: 0x0 spc: 0x942
uba: 0x00000000.0018.02 ext: 0x0 spc: 0x1e62
uba: 0x00000000.0000.00 ext: 0x0 spc: 0x0
uba: 0x00000000.0000.00 ext: 0x0 spc: 0x0
TRN TBL:: index state cflags wrap# uel scn dba parent-xid nub stmt_num
------------------------------------------------------------------------------------------------
0x00 9 0x00 0x0019 0x004a 0x0000.00969848 0x00400227 0x0000.000.00000000 0x00000001 0x00000000
0x01 9 0x00 0x0019 0x000a 0x0000.0096984c 0x00400227 0x0000.000.00000000 0x00000001 0x00000000
模拟的时候先关闭数据库
SQL> shutdown immediate;
Database closed.
Database dismounted.
ORACLE instance shut down.
BBED> set file 1 block 128
FILE# 1
BLOCK# 128BBED> map /v
File: /u01/app/oracle/oradata/orcl/system01.dbf (1)
Block: 128 Dba:0x00400080
------------------------------------------------------------
Unlimited Undo Segment Header
BBED> p ktuxc ##事务控制列表
struct ktuxcfbp[], 12 bytes @4192
struct ktufbuba, 8 bytes @4192
ub4 kubadba @4192 0x00400229
ub2 kubaseq @4196 0x001d
ub1 kubarec @4198 0x12
sb2 ktufbext @4200 5
sb2 ktufbspc @4202 2930
struct ktuxcfbp[], 12 bytes @4204
struct ktufbuba, 8 bytes @4204
ub4 kubadba @4204 0x00000000
ub2 kubaseq @4208 0x0018
ub1 kubarec @4210 0x34
sb2 ktufbext @4212 0
sb2 ktufbspc @4214 2370
BBED> set dba 0x00400229
DBA 0x00400229 (4194857 1,553)BBED> map /v
File: /u01/app/oracle/oradata/orcl/system01.dbf (1)
Block: 553 Dba:0x00400229
------------------------------------------------------------
Undo Data struct kcbh, 20 bytes @0
ub1 type_kcbh @0
ub1 frmt_kcbh @1
ub1 spare1_kcbh @2
ub1 spare2_kcbh @3
ub4 rdba_kcbh @4
ub4 bas_kcbh @8
ub2 wrp_kcbh @12
ub1 seq_kcbh @14
ub1 flg_kcbh @15
ub2 chkval_kcbh @16
ub2 spare3_kcbh @18 struct ktubh, 52 bytes @20
struct ktubhxid, 8 bytes @20
ub2 ktubhseq @28 #####
ub1 ktubhcnt @30
ub1 ktubhirb @31
ub1 ktubhicl @32
ub1 ktubhflg @33
ub2 ktubhidx[] @34 ub1 freespace[] @72 ub1 undodata[] @3004 ub4 tailchk @8188
使用bbed修改并应用
BBED> modify /x 1e offset 28
Warning: contents of previous BIFILE will be lost. Proceed? (Y/N) y
File: /u01/app/oracle/oradata/orcl/system01.dbf (1)
Block: 553 Offsets: 28 to 539 Dba:0x00400229
BBED> sum apply
启动数据报错
SQL> startup mount;
ORACLE instance started.Total System Global Area 784998400 bytes
Fixed Size 2257352 bytes
Variable Size 478154296 bytes
Database Buffers 297795584 bytes
Redo Buffers 6791168 bytes
Database mounted.
SQL> alter database open;
alter database open
*
ERROR at line 1:
ORA-01092: ORACLE instance terminated. Disconnection forced
ORA-00600: internal error code, arguments: [], [], [], [], [], [], [], [],
[], [], [], []
Process ID: 8643
Session ID: 125 Serial number: 5
alert日志
[oracle@DSI ~]$ tail -n 100 /u01/app/oracle/diag/rdbms/orcl/orcl/trace/alert_orcl.log
Block recovery completed at rba 31.72797.16, scn 0.10127330
Undo initialization errored: err:600 serial:0 start:107136944 end:107138904 diff:1960 (19 seconds)
Errors in file /u01/app/oracle/diag/rdbms/orcl/orcl/trace/orcl_ora_8643.trc:
ORA-00600: internal error code, arguments: [], [], [], [], [], [], [], [], [], [], [], []
Errors in file /u01/app/oracle/diag/rdbms/orcl/orcl/trace/orcl_ora_8643.trc:
ORA-00600: internal error code, arguments: [], [], [], [], [], [], [], [], [], [], [], []
Error 600 happened during db open, shutting down database
USER (ospid: 8643): terminating the instance due to error 600
10046
SYS@ orcl >oradebug setmypid
Statement processed.
SYS@ orcl >oradebug tracefile_name
/u01/app/oracle/diag/rdbms/orcl/orcl/trace/orcl_ora_8771.trc
SYS@ orcl >oradebug event 10046 trace name context forever,level 12
SYS@ orcl > alter database open;PARSING IN CURSOR #139713678966960 len=55 dep=1 uid=0 oct=3 lid=0 tim=1561619032814165 hv=2111436465 ad='8e889e30' sqlid='6apq2rjyxmxpj'
select line#, sql_text from bootstrap$ where obj# != :1
END OF STMT
PARSE #139713678966960:c=1000,e=243,p=0,cr=0,cu=0,mis=1,r=0,dep=1,og=4,plh=0,tim=1561619032814165
BINDS #139713678966960:
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=7f11a0347c68 bln=22 avl=02 flg=05
value=59PARSING IN CURSOR #139713654947120 len=160 dep=1 uid=0 oct=6 lid=0 tim=1561619032979076 hv=1292341136 ad='88bcc840' sqlid='8vyjutx6hg3wh'
update /*+ rule */ undo$ set name=:2,file#=:3,block#=:4,status$=:5,user#=:6,undosqn=:7,xactsqn=:8,scnbas=:9,scnwrp=:10,inst#=:11,ts#=:12,spare1=:13 where us#=:1
END OF STMT
PARSE #139713654947120:c=2000,e=2120,p=6,cr=43,cu=0,mis=1,r=0,dep=1,og=3,plh=0,tim=1561619032979076
BINDS #139713654947120:
Bind#0
oacdty=01 mxl=32(20) mxlc=00 mal=00 scl=00 pre=00
oacflg=18 fl2=0001 frm=01 csi=873 siz=32 off=0
kxsbbbfp=88bdf03a bln=32 avl=20 flg=09
value="_SYSSMU1_1925302723$"WAIT #139713654947120: nam='db file sequential read' ela= 6 file#=1 block#=553 blocks=1 obj#=0 tim=1561619032979636
Incident 55355 created, dump file: /u01/app/oracle/diag/rdbms/orcl/orcl/incident/incdir_55355/orcl_ora_8771_i55355.trc
ORA-00600: internal error code, arguments: [], [], [], [], [], [], [], [], [], [], [], []Error 600 in redo application callback
Dump of change vector:
TYP:0 CLS:16 AFN:1 DBA:0x00400229 OBJ:4294967295 SCN:0x0000.00998c56 SEQ:1 OP:5.1 ENC:0 RBL:0
ktudb redo: siz: 288 spc: 642 flg: 0x0012 seq: 0x001d rec: 0x1d
xid: 0x0000.040.00000019
尝试设置free block pool(如果不知道，假设free block pool没有可用的undo block!)如下方法：
1、 ktuxc.ktuxcnfb设置为 0x00
2、 kubadba设为0x00000000
BBED> set file 1 block 128
FILE# 1
BLOCK# 128
BBED> map /v
BBED> p ktuxc
struct ktuxc, 104 bytes @4148
struct ktuxcscn, 8 bytes @4148
ub4 kscnbas @4148 0x0096025e
ub2 kscnwrp @4152 0x0000
struct ktuxcuba, 8 bytes @4156
ub4 kubadba @4156 0x00400229
ub2 kubaseq @4160 0x001d
ub1 kubarec @4162 0x13
sb2 ktuxcflg @4164 1 (KTUXCFSK)
ub2 ktuxcseq @4166 0x001d
sb2 ktuxcnfb @4168 1
ub4 ktuxcinc @4172 0x00000000
sb2 ktuxcchd @4176 64
sb2 ktuxcctl @4178 62
ub2 ktuxcmgc @4180 0x8002
ub4 ktuxcopt @4188 0x7ffffffe
BBED> modify /x 00 offset 4168
Warning: contents of previous BIFILE will be lost. Proceed? (Y/N) y
File: /u01/app/oracle/oradata/orcl/system01.dbf (1)
Block: 128 Offsets: 4168 to 4679 Dba:0x00400080
BBED> modify /x 0x00000000 offset 4192
File: /u01/app/oracle/oradata/orcl/system01.dbf (1)
Block: 128 Offsets: 4192 to 4703 Dba:0x00400080
BBED> sum apply
启动数据库
SQL> startup mount;
ORACLE instance started.Total System Global Area 784998400 bytes
Fixed Size 2257352 bytes
Variable Size 478154296 bytes
Database Buffers 297795584 bytes
Redo Buffers 6791168 bytes
Database mounted.
SQL> alter database open; ##数据库打开
[oracle@DSI ~]$ tail -n 100 /u01/app/oracle/diag/rdbms/orcl/orcl/trace/alert_orcl.log
SMON: enabling cache recovery
Thu Jun 27 15:18:16 2019
ARC3 started with pid=25, OS id=8873
ARC1: Archival started
ARC2: Archival started
ARC3: Archival started
ARC0: STARTING ARCH PROCESSES COMPLETE
ARC0: Becoming the 'no FAL' ARCH
ARC0: Becoming the 'no SRL' ARCH
ARC1: Becoming the heartbeat ARCH
Archived Log entry 253 added for thread 1 sequence 32 ID 0x5bac61e6 dest 1:
[] Successfully onlined Undo Tablespace 2.
Undo initialization finished serial:0 start:108417224 end:108417244 diff:20 (0 seconds)
Verifying file header compatibility for 11g tablespace encryption..
Verifying 11g file header compatibility for tablespace encryption completed
SMON: enabling tx recovery
Database Characterset is AL32UTF8
No Resource Manager plan active
replication_dependency_tracking turned off (no async multimaster replication found)
Starting background process QMNC
ORA-600 [4194] 错误解析
ERROR:
ORA-600 [] [a] [b]
VERSIONS:
versions 6.0 to 10.1
DESCRIPTION:
A mismatch has been detected between Redo records and rollback (Undo)
records.
We are validating the Undo record number relating to the change being
applied against the maximum undo record number recorded in the undo block.
This error is reported when the validation fails.
ARGUMENTS:
Arg [a] Maximum Undo record number in Undo block
Arg [b] Undo record number from Redo block
A mismatch has been detected between Redo records and rollback (Undo) records.
BBED> set file 1 block 128
FILE# 1
BLOCK# 128BBED> p ktuxc
struct ktuxcfbp[], 12 bytes @4192
struct ktufbuba, 8 bytes @4192
ub4 kubadba @4192 0x0040022a
ub2 kubaseq @4196 0x001d
ub1 kubarec @4198 0x14
sb2 ktufbext @4200 5
sb2 ktufbspc @4202 2342修改ub1 kubarec @4198 0x14
modify /x 24 offset 4198
sum apply
--修复ORA-600 [4194]
BBED> modify /x 00 offset 4168
BBED> modify /x 0x00000000 offset 4192
sum apply
ORA-600[4193]/[4194]错误总结
从上面测试可以得出：ORA-600[4194]/[4193]，====>UNDO问题!
ORA-600[4193] ：表示undo和redo不一致（Arg [a] Undo record seq number，Arg [b] Redo record seq number ）；
ORA-600[4194] ：表示也是undo和redo不一致（Arg [a] Maximum Undo record number in Undo block，Arg [b] Undo record number from Redo block）
ORA-600[4193]/[4194]错误解决思路
方法一（推荐使用）
1.修改参数
undo_management= MANUAL
undo_tablespace= SYSTEM
2.打开数据库，删除当前undo空间，重建新undo空间
3.修改参数
undo_management= AUTO
undo_tablespace= UNDOTBSNEW
4.重新启动数据库
方法二（隐含参数）
1.利用隐含参数_offline_rollback_segments和_corrupted_rollback_segments屏蔽掉有问题的undo segment,然后打
开数据库，最后重建undo或者drop掉损坏的回滚段即可
undo_management='MANUAL'
*._offline_rollback_segments=('_SYSSMU1_2820145294$','_SYSSMU2_3242179461$','_SYSSMU3_2848625369$','_SYSSMU4_2009059248$','_SYSSMU5_2273177123$','_SYSSMU6_2776392018$','_SYSSMU7_3805255807$','_SYSSMU8_191510003$','_SYSSMU9_4104046564$','_SYSSMU10_2094815206$')
*._corrupted_rollback_segments=(_SYSSMU1$, _SYSSMU2$, _SYSSMU3$, _SYSSMU4$, _SYSSMU5$,_SYSSMU6$, _SYSSMU7$, _SYSSMU8$, _SYSSMU9$, _SYSSMU10$)# strings system01.dbf | grep _SYSSMU | cut -d $ -f 1 | sort
启动db后，创建新的undo表空间，并切换，修改pfile，创建pfile，在正常启动，删除_corrupted_rollback_segments参数2.继续可能出现ora-600[]，需要推进scn
alter session set events '10015 trace name adjust_scn level 1';
方法三 BBEED
1.modify /x 00 offset 4168
2.modify /x 00000000 offset 4192
