[20181204]模拟ora-00600[4193]错误.txt

[20181204]模拟ora-00600[4193]错误.txt --//ora-600[4193]：表示undo和redo不一致(Arg [a] Undo record seq number，Arg [b] Redo record seq number ) --//数据库在启动时需要进行一个前滚的操作，在前滚时会应用redo 到undo block上，操作时会检查undo record里的seq#和redo --//record里的seq#。正常情况下，这2者的seq# 应该是一致的，在一致的情况下，我们才应用redo record 到undo record。如果不一 --//致就会出现ORA-600[4193][a][b]的错误。其中a是undo里的seq#记录，b是redo里的seq#值。 这里的值都是十六进程，可以通过 --//to_number()函数来转换。 --//一般常规解决ora-00600[4193][4194]思路: --//方法一: --//修改参数如下: undo_management='MANUAL' undo_tablespace='SYSTEM' --//运气好,这样就可以open数据库.然后建立新的表空间UNDOTBSNEW,切换到新undo_tablespace表空间. --//再修改修改参数: undo_management= AUTO undo_tablespace= UNDOTBSNEW --//重新启动数据库,一般这类的数据库最好重新导入/导出,因为运行中可能会报各种ora-00600错误. --//方法二: --//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掉损坏的回滚鼹即可 undo_management='MANUAL' undo_tablespace='SYSTEM' *._offline_rollback_segments=('_SYSSMU1_3724004606$', '_SYSSMU2_2996391332$', '_SYSSMU3_1723003836$', '_SYSSMU4_1254879796$', '_SYSSMU5_898567397$','_SYSSMU6_1263032392$', '_SYSSMU7_2070203016$', '_SYSSMU8_517538920$', '_SYSSMU9_1650507775$', '_SYSSMU10_1197734989$'); *._corrupted_rollback_segments=('_SYSSMU1_3724004606$', '_SYSSMU2_2996391332$', '_SYSSMU3_1723003836$', '_SYSSMU4_1254879796$', '_SYSSMU5_898567397$','_SYSSMU6_1263032392$', '_SYSSMU7_2070203016$', '_SYSSMU8_517538920$', '_SYSSMU9_1650507775$', '_SYSSMU10_1197734989$'); --//其它同方法一. --//如果问题发生在system回滚段,就不能按照上面的方法处理.看了http://www.askmaclean.com/网站介绍. --//链接:http://www.askmaclean.com/archives/【oracle数据恢复】通过bbed修复ora-6004193和ora-6004194的例子.html --//通过bbed修改系统回滚段的2个参数.在sum apply就ok了. ktuxc.ktuxcnfb=0x0000 ktuxc.ktuxcfbp[0].ktufbuba.kubadba=0x00000000 --//反向思维一下,我想既然可以这样方法修复,也可以利用同样模拟问题的产生.通过测试环境测试看看. 1.环境: SYS@book> @ ver1 PORT_STRING                    VERSION        BANNER ------------------------------ -------------- -------------------------------------------------------------------------------- x86_64/Linux 2.4.xx            11.2.0.4.0     Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production SYS@book> select HEADER_FILE,HEADER_BLOCK,BLOCKS,EXTENTS from dba_segments where segment_name='SYSTEM' and SEGMENT_TYPE='ROLLBACK'; HEADER_FILE HEADER_BLOCK     BLOCKS    EXTENTS ----------- ------------ ---------- ----------           1          128         48          6 --//system表空间使用MSSM,bbed可以访问段头. SYS@book> shutdown immediate ; Database closed. Database dismounted. ORACLE instance shut down. SYS@book> startup mount ORACLE instance started. Total System Global Area  643084288 bytes Fixed Size                  2255872 bytes Variable Size             205521920 bytes Database Buffers          427819008 bytes Redo Buffers                7487488 bytes Database mounted. SYS@book> alter system dump datafile '/mnt/ramdisk/book/system01.dbf' block 128; System altered.   Extent Control Header   -----------------------------------------------------------------   Extent Header:: spare1: 0      spare2: 0      #extents: 6      #blocks: 47                   last map  0x00000000  #maps: 0      offset: 4128       Highwater::  0x00400086  ext#: 0      blk#: 5      ext size: 7   #blocks in seg. hdr's freelists: 0   #blocks below: 0   mapblk  0x00000000  offset: 0                    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: 0x002a chd: 0x002c ctl: 0x0035 inc: 0x00000000 nfb: 0x0001                                                                 ~~~~~~~~~~~             mgc: 0x8002 xts: 0x0068 flg: 0x0001 opt: 2147483646 (0x7ffffffe)             uba: 0x00400086.002a.13 scn: 0x0003.37750657 Version: 0x01   FREE BLOCK POOL::     uba: 0x00400086.002a.1c ext: 0x0  spc: 0x4a6 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~     uba: 0x00000000.001a.02 ext: 0x2  spc: 0x1f16     uba: 0x00000000.0018.3a ext: 0x0  spc: 0x80e     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  0x002b  0x0003  0x0003.37752d36  0x00400084  0x0000.000.00000000  0x00000001   0x00000000 ...    0x60    9    0x00  0x002a  0x005c  0x0003.37752d44  0x00400084  0x0000.000.00000000  0x00000001   0x00000000    0x61    9    0x00  0x002a  0x0005  0x0003.37752d30  0x00400084  0x0000.000.00000000  0x00000001   0x00000000 End dump data block from file /mnt/ramdisk/book/system01.dbf minblk 128 maxblk 128 --//注意下划线部分内容与bbed的观察对上.关闭数据库. 2.通过bbed观察: BBED> set dba 1,128         DBA             0x00400080 (4194432 1,128) BBED> p ktuxc struct ktuxc, 104 bytes                     @4148    struct ktuxcscn, 8 bytes                 @4148       ub4 kscnbas                           @4148     0x37750657       ub2 kscnwrp                           @4152     0x0003    struct ktuxcuba, 8 bytes                 @4156       ub4 kubadba                           @4156     0x00400086       ub2 kubaseq                           @4160     0x002a       ub1 kubarec                           @4162     0x13    sb2 ktuxcflg                             @4164     1 (KTUXCFSK)    ub2 ktuxcseq                             @4166     0x002a    sb2 ktuxcnfb                             @4168     1 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~    ub4 ktuxcinc                             @4172     0x00000000    sb2 ktuxcchd                             @4176     44    sb2 ktuxcctl                             @4178     53    ub2 ktuxcmgc                             @4180     0x8002    ub4 ktuxcopt                             @4188     0x7ffffffe    struct ktuxcfbp[0], 12 bytes             @4192       struct ktufbuba, 8 bytes              @4192          ub4 kubadba                        @4192     0x00400086 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~          ub2 kubaseq                        @4196     0x002a          ub1 kubarec                        @4198     0x1c       sb2 ktufbext                          @4200     0       sb2 ktufbspc                          @4202     1190    struct ktuxcfbp[1], 12 bytes             @4204       struct ktufbuba, 8 bytes              @4204          ub4 kubadba                        @4204     0x00000000          ub2 kubaseq                        @4208     0x001a          ub1 kubarec                        @4210     0x02       sb2 ktufbext                          @4212     2       sb2 ktufbspc                          @4214     7958    struct ktuxcfbp[2], 12 bytes             @4216       struct ktufbuba, 8 bytes              @4216          ub4 kubadba                        @4216     0x00000000          ub2 kubaseq                        @4220     0x0018          ub1 kubarec                        @4222     0x3a       sb2 ktufbext                          @4224     0       sb2 ktufbspc                          @4226     2062    struct ktuxcfbp[3], 12 bytes             @4228       struct ktufbuba, 8 bytes              @4228          ub4 kubadba                        @4228     0x00000000          ub2 kubaseq                        @4232     0x0000          ub1 kubarec                        @4234     0x00       sb2 ktufbext                          @4236     0       sb2 ktufbspc                          @4238     0    struct ktuxcfbp[4], 12 bytes             @4240       struct ktufbuba, 8 bytes              @4240          ub4 kubadba                        @4240     0x00000000          ub2 kubaseq                        @4244     0x0000          ub1 kubarec                        @4246     0x00       sb2 ktufbext                          @4248     0       sb2 ktufbspc                          @4250     0 --//注意看下划线,如果出现问题,正常就是修改这2处. BBED> set dba 0x00400086         DBA             0x00400086 (4194438 1,134) BBED> p ktubh struct ktubh, 72 bytes                      @20    struct ktubhxid, 8 bytes                 @20       ub2 kxidusn                           @20       0x0000       ub2 kxidslt                           @22       0x0035       ub4 kxidsqn                           @24       0x0000002b    ub2 ktubhseq                             @28       0x002a    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~    ub1 ktubhcnt                             @30       0x1c    ub1 ktubhirb                             @31       0x1c    ub1 ktubhicl                             @32       0x00    ub1 ktubhflg                             @33       0x00    ub2 ktubhidx[0]                          @34       0x1fe8    ub2 ktubhidx[1]                          @36       0x1edc    ub2 ktubhidx[2]                          @38       0x1dd0    ub2 ktubhidx[3]                          @40       0x1cc4    ub2 ktubhidx[4]                          @42       0x1bb8    ub2 ktubhidx[5]                          @44       0x1aac    ub2 ktubhidx[6]                          @46       0x19a0    ub2 ktubhidx[7]                          @48       0x1894    ub2 ktubhidx[8]                          @50       0x1788    ub2 ktubhidx[9]                          @52       0x167c    ub2 ktubhidx[10]                         @54       0x1570    ub2 ktubhidx[11]                         @56       0x1464    ub2 ktubhidx[12]                         @58       0x1358    ub2 ktubhidx[13]                         @60       0x124c    ub2 ktubhidx[14]                         @62       0x1140    ub2 ktubhidx[15]                         @64       0x1034    ub2 ktubhidx[16]                         @66       0x0f28    ub2 ktubhidx[17]                         @68       0x0e18    ub2 ktubhidx[18]                         @70       0x0d08    ub2 ktubhidx[19]                         @72       0x0bf8    ub2 ktubhidx[20]                         @74       0x0b30    ub2 ktubhidx[21]                         @76       0x0a68    ub2 ktubhidx[22]                         @78       0x09a0    ub2 ktubhidx[23]                         @80       0x08d8    ub2 ktubhidx[24]                         @82       0x0810    ub2 ktubhidx[25]                         @84       0x0748    ub2 ktubhidx[26]                         @86       0x0680    ub2 ktubhidx[27]                         @88       0x05b8    ub2 ktubhidx[28]                         @90       0x04f0 --//注意看下划线与如下dba 1,128  ktuxc.ktuxcfbp[0].ktufbuba.kubaseq一致: BBED> p dba 1,128  ktuxc.ktuxcfbp[0].ktufbuba.kubaseq ub2 kubaseq                                 @4196     0x002a --//修改如下: BBED> set dba 0x00400086         DBA             0x00400086 (4194438 1,134) BBED> p  dba 1,134 ktubh.ktubhseq ub2 ktubhseq                                @28       0x002a BBED> assign  dba 1,134 ktubh.ktubhseq=0x002b Warning: contents of previous BIFILE will be lost. Proceed? (Y/N) y ub2 ktubhseq                                @28       0x002b BBED> sum apply dba 1,134 Check value for File 1, Block 134: current = 0x7b48, required = 0x7b48 SYS@book> startup ORACLE instance started. Total System Global Area  643084288 bytes Fixed Size                  2255872 bytes Variable Size             205521920 bytes Database Buffers          427819008 bytes Redo Buffers                7487488 bytes Database mounted. ORA-01092: ORACLE instance terminated. Disconnection forced ORA-00600: internal error code, arguments: [4193], [], [], [], [], [], [], [], [], [], [], [] Process ID: 24151 Session ID: 274 Serial number: 3 --//检查alert.log可以发现如下错误: Undo initialization errored: err:600 serial:0 start:3978938248 end:3978939378 diff:1130 (11 seconds) Errors in file /u01/app/oracle/diag/rdbms/book/book/trace/book_ora_24151.trc: ORA-00600: internal error code, arguments: [4193], [], [], [], [], [], [], [], [], [], [], [] Errors in file /u01/app/oracle/diag/rdbms/book/book/trace/book_ora_24151.trc: ORA-00600: internal error code, arguments: [4193], [], [], [], [], [], [], [], [], [], [], [] Error 600 happened during db open, shutting down database USER (ospid: 24151): terminating the instance due to error 600 Instance terminated by USER, pid = 24151 ORA-1092 signalled during: ALTER DATABASE OPEN... opiodr aborting process unknown ospid (24151) as a result of ORA-1092 Tue Dec 04 12:05:35 2018 ORA-1092 : opitsk aborting process --//很奇怪这样的模拟看不到后面的[a][b]参数. --//继续测试,改小看看 BBED> assign  dba 1,134 ktubh.ktubhseq=0x0029 Warning: contents of previous BIFILE will be lost. Proceed? (Y/N) y ub2 ktubhseq                                @28       0x0029 BBED> sum apply dba 1,134 Check value for File 1, Block 134: current = 0x7b4a, required = 0x7b4a SYS@book> startup ORACLE instance started. Total System Global Area  643084288 bytes Fixed Size                  2255872 bytes Variable Size             205521920 bytes Database Buffers          427819008 bytes Redo Buffers                7487488 bytes Database mounted. ORA-01092: ORACLE instance terminated. Disconnection forced ORA-00600: internal error code, arguments: [4193], [], [], [], [], [], [], [], [], [], [], [] Process ID: 24262 Session ID: 274 Serial number: 3 --//一样产生ora-00600[4193]错误. --//alert.log记录如下: Undo initialization errored: err:600 serial:0 start:3979178998 end:3979180418 diff:1420 (14 seconds) Errors in file /u01/app/oracle/diag/rdbms/book/book/trace/book_ora_24262.trc: ORA-00600: internal error code, arguments: [4193], [], [], [], [], [], [], [], [], [], [], [] Errors in file /u01/app/oracle/diag/rdbms/book/book/trace/book_ora_24262.trc: ORA-00600: internal error code, arguments: [4193], [], [], [], [], [], [], [], [], [], [], [] Error 600 happened during db open, shutting down database USER (ospid: 24262): terminating the instance due to error 600 Instance terminated by USER, pid = 24262 ORA-1092 signalled during: ALTER DATABASE OPEN... opiodr aborting process unknown ospid (24262) as a result of ORA-1092 Tue Dec 04 12:09:36 2018 ORA-1092 : opitsk aborting process --//修改回来. BBED> assign  dba 1,134 ktubh.ktubhseq=0x002a Warning: contents of previous BIFILE will be lost. Proceed? (Y/N) y ub2 ktubhseq                                @28       0x002a BBED> sum apply dba 1,134 Check value for File 1, Block 134: current = 0x7b49, required = 0x7b49 SYS@book> startup open read only; ORACLE instance started. Total System Global Area  643084288 bytes Fixed Size                  2255872 bytes Variable Size             205521920 bytes Database Buffers          427819008 bytes Redo Buffers                7487488 bytes Database mounted. ORA-16005: database requires recovery --//已经不能只读打开. SYS@book> select open_mode from v$database ; OPEN_MODE --------- MOUNTED SYS@book> alter database open ; Database altered. 3.测试在正常状态下修改如何? --//关闭数据库. SYS@book> shutdown immediate ; Database closed. Database dismounted. ORACLE instance shut down. --//设置free block pool，也就是假设free block pool无可用的undo block. BBED> set dba 1,128         DBA             0x00400080 (4194432 1,128) BBED> p ktuxc struct ktuxc, 104 bytes                     @4148    struct ktuxcscn, 8 bytes                 @4148       ub4 kscnbas                           @4148     0x377509ad       ub2 kscnwrp                           @4152     0x0003    struct ktuxcuba, 8 bytes                 @4156       ub4 kubadba                           @4156     0x00400087       ub2 kubaseq                           @4160     0x002a       ub1 kubarec                           @4162     0x12    sb2 ktuxcflg                             @4164     1 (KTUXCFSK)    ub2 ktuxcseq                             @4166     0x002a    sb2 ktuxcnfb                             @4168     1 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~    ub4 ktuxcinc                             @4172     0x00000000    sb2 ktuxcchd                             @4176     55    sb2 ktuxcctl                             @4178     60    ub2 ktuxcmgc                             @4180     0x8002    ub4 ktuxcopt                             @4188     0x7ffffffe    struct ktuxcfbp[0], 12 bytes             @4192       struct ktufbuba, 8 bytes              @4192          ub4 kubadba                        @4192     0x00400087 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~          ub2 kubaseq                        @4196     0x002a          ub1 kubarec                        @4198     0x1b       sb2 ktufbext                          @4200     0       sb2 ktufbspc                          @4202     1460 --//修改下划线内容. assign dba 1,128 ktuxc.ktuxcnfb=0x0000 assign dba 1,128 ktuxc.ktuxcfbp[0].ktufbuba.kubadba=0x00000000 BBED> assign dba 1,128 ktuxc.ktuxcnfb=0x0000 sb2 ktuxcnfb                                @4168     0 BBED> assign dba 1,128 ktuxc.ktuxcfbp[0].ktufbuba.kubadba=0x00000000 ub4 kubadba                                 @4192     0x00000000 BBED> sum apply dba 1,128 Check value for File 1, Block 128: current = 0xbae1, required = 0xbae1 SYS@book> startup open read only; ORACLE instance started. Total System Global Area  643084288 bytes Fixed Size                  2255872 bytes Variable Size             205521920 bytes Database Buffers          427819008 bytes Redo Buffers                7487488 bytes Database mounted. Database opened. --//最后总结方法三: assign dba 1,128 ktuxc.ktuxcnfb=0x0000 assign dba 1,128 ktuxc.ktuxcfbp[0].ktufbuba.kubadba=0x00000000 --//我估计如果不是ktuxc.ktuxcnfb=0x0001,比如是0x0002. --//可能还要清空ktuxc.ktuxcfbp[1].ktufbuba.kubadba=0x00000000.