ORA-600 [4193] 错误解析 ERROR: Format: ORA-600 [4193] [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# 128 BBED> 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[0], 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[1], 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[19] @34 ub1 freespace[2932] @72 ub1 undodata[5184] @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: [4193], [], [], [], [], [], [], [], [], [], [], [] 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: [4193], [], [], [], [], [], [], [], [], [], [], [] Errors in file /u01/app/oracle/diag/rdbms/orcl/orcl/trace/orcl_ora_8643.trc: ORA-00600: internal error code, arguments: [4193], [], [], [], [], [], [], [], [], [], [], [] 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=59 PARSING 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: [4193], [], [], [], [], [], [], [], [], [], [], [] 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: [8861] 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 [4194] [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# 128 BBED> p ktuxc struct ktuxcfbp[0], 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[2662]，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