delete误删基表（seg$）bbed恢复cluster table

有客户通过delete误删了sys.seg$表的数据，重启数据库，发现数据库不能正常启动。

删除命令：delete from sys.seg$ t where ts#=2;

数据库启动报错

Errors in file /u01/app/diag/rdbms/orcl/orcl/trace/orcl_ora_48064.trc (incident=325391): ORA-00600: internal error code, arguments: [ktsircinfo_num1], [1], [2], [5826], [], [], [], [], [], [], [], [] Incident details in: /u01/app/diag/rdbms/orcl/orcl/incident/incdir_325391/orcl_ora_48064_i325391.trc ARC3: Archival started ARC0: STARTING ARCH PROCESSES COMPLETE Use ADRCI or Support Workbench to package the incident. See Note 411.1 at My Oracle Support for error and packaging details. Errors in file /u01/app/diag/rdbms/orcl/orcl/trace/orcl_ora_48064.trc (incident=325392): ORA-00600: internal error code, arguments: [ktsircinfo_num1], [1], [2], [5826], [], [], [], [], [], [], [], [] Incident details in: /u01/app/diag/rdbms/orcl/orcl/incident/incdir_325392/orcl_ora_48064_i325392.trc Tue Apr 11 22:56:42 2023 Dumping diagnostic data in directory=[cdmp_20230411225642], requested by (instance=1, osid=48064), summary=[incident=325391]. Use ADRCI or Support Workbench to package the incident. See Note 411.1 at My Oracle Support for error and packaging details. Undo initialization errored: err:600 serial:0 start:412236424 end:412238104 diff:1680 (16 seconds) Errors in file /u01/app/diag/rdbms/orcl/orcl/trace/orcl_ora_48064.trc: ORA-00600: internal error code, arguments: [ktsircinfo_num1], [1], [2], [5826], [], [], [], [], [], [], [], [] Errors in file /u01/app/diag/rdbms/orcl/orcl/trace/orcl_ora_48064.trc: ORA-00600: internal error code, arguments: [ktsircinfo_num1], [1], [2], [5826], [], [], [], [], [], [], [], [] Error 600 happened during db open, shutting down database

通过dump删除标识

tab 2, row 21, @0x151b
tl: 4 fb: -CHDFL-- lb: 0x2 cc: 0 cki: 21
tab 2, row 22, @0x14e9
tl: 4 fb: -CHDFL-- lb: 0x2 cc: 0 cki: 22
tab 2, row 23, @0x14b7
tl: 4 fb: -CHDFL-- lb: 0x2 cc: 0 cki: 23

对比正常时：

tab 2, row 21, @0x151b
tl: 50 fb: -CH-FL-- lb: 0x0 cc: 16 cki: 21
col 0: [ 2] c1 0b
col 1: [ 2] c1 09
col 2: [ 2] c1 02
col 3: [ 2] c1 11
col 4: [ 2] c1 03
col 5: [ 4] c3 04 1c 42
col 6: [ 2] c1 09
col 7: [ 1] 80
col 8: [ 1] 80
col 9: [ 1] 80
col 10: [ 1] 80
col 11: [ 1] 80
col 12: [ 1] 80
col 13: [ 1] 80
col 14: [ 2] c1 02
col 15: [ 5] c4 05 14 2c 08
tab 2, row 22, @0x14e9
tl: 50 fb: -CH-FL-- lb: 0x0 cc: 16 cki: 22

在bbed中查看：

正常数据：

flag@6355: 0x6c (KDRHFL, KDRHFF, KDRHFH, KDRHFC)

删除数据

rowdata[398] @5095

flag@5095: 0x7c (KDRHFL, KDRHFF, KDRHFD, KDRHFH, KDRHFC)
lock@5096: 0x02
cols@5097: 0
ckix@5098: 29

获取对象数据块

#!/bin/sh. ~/.bash_profilefor ((i=1; i<=89600; i ++))
do
objectid=`echo p /d dba 1,$i ktbbh.ktbbhsid.ktbbhod1 | bbed parfile=bbedpar.txt password=blockedit | grep 'ktbbhod1' | awk '{print $5}'`
if [ "$objectid" = "8" ];then
echo $i;
fi;
done

从数据块里面获取修复脚本

#!/bin/sh. ~/.bash_profilecat sh.out | while read idolen=`echo p /d dba 1,$i offset 0 kdbr | bbed parfile=bbedpar.txt password=blockedit | grep 'kdbr' | wc -l`if [ -n "$len" ];thenfor ((j=0; j<$len; j++))dooffset=`echo p dba 1, $i *kdbr[$j]| bbed parfile=bbedpar.txt password=blockedit | grep '^ub1*.*rowdata' | awk '{print $3}' |sed 's/@//g'`echo "x /rnc *kdbr[$j]"echo "assign /x dba 1, $i offset $offset = 0x6c"donefiecho "sum apply dba 1,$i"done

为了验证脚本准确性，先验证是否有删除记录：

x /rnc *kdbr[0]

。。。。

x /rnc *kdbr[69]

跟普通表所在行不一样，存数据的是row 30，没有数据

BBED> x /rnc *kdbr[30]
rowdata[900] @5597

flag@5597: 0xac (KDRHFL, KDRHFF, KDRHFH, KDRHFK)
lock@5598: 0x00
cols@5599: 3
kref@5600: 1
hrid@5602:0x004000c7.1e
nrid@5608:0x004000c7.1e

col 0[2] @5616: 2
col 1[2] @5619: ??
col 2[3] @5622: .I

位置65，才是放数据的：

BBED> x /rnccntnnn *kdbr[65]
rowdata[348] @5045

flag@5045: 0x7c (KDRHFL, KDRHFF, KDRHFD, KDRHFH, KDRHFC)
lock@5046: 0x02
cols@5047: 0
ckix@5048: 30 《—-连接到30行

恢复：

assign /x dba 1, 199 offset 5445 = 0x6c
assign /x dba 1, 199 offset 5395 = 0x6c
assign /x dba 1, 199 offset 5345 = 0x6c
assign /x dba 1, 199 offset 5295 = 0x6c
assign /x dba 1, 199 offset 5245 = 0x6c
assign /x dba 1, 199 offset 5195 = 0x6c
assign /x dba 1, 199 offset 5145 = 0x6c
assign /x dba 1, 199 offset 5095 = 0x6c
assign /x dba 1, 199 offset 5045 = 0x6c

该cluseter表：

create table SYS.SEG$
(
file# NUMBER not null,
block# NUMBER not null,
type# NUMBER not null,
ts# NUMBER not null,
blocks NUMBER not null,
extents NUMBER not null,
iniexts NUMBER not null,
minexts NUMBER not null,
maxexts NUMBER not null,
extsize NUMBER not null,
extpct NUMBER not null,
user# NUMBER not null,
lists NUMBER,
groups NUMBER,
bitmapranges NUMBER not null,
cachehint NUMBER not null,
scanhint NUMBER not null,
hwmincr NUMBER not null,
spare1 NUMBER,
spare2 NUMBER
)
cluster C_FILE#_BLOCK# ();