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昨天準備研究11g的query cache result 特性，準備用10g的老方法來直接通過
show parameter xxxx的方式來查看隱含參數(shù)，發(fā)現(xiàn)下面的創(chuàng)建視圖語句居然報錯ora-08102
如下是創(chuàng)建視圖的腳本，后面是錯誤：
create or replace view show_hidden_v$parameter
(INST_ID, NUM , NAME , TYPE , VALUE , DISPLAY_VALUE, ISDEFAULT , ISSES_MODIFIABLE , ISSYS_MODIFIABLE , ISINSTANCE_MODIFIABLE,
ISMODIFIED , ISADJUSTED , ISDEPRECATED, DESCRIPTION, UPDATE_COMMENT, HASH)
as
select x.inst_id,
x.indx + 1,
ksppinm,
ksppity,
ksppstvl,
ksppstdvl,
ksppstdf,
decode(bitand(ksppiflg / 256, 1), 1, 'TRUE', 'FALSE'),
decode(bitand(ksppiflg / 65536, 3),
1,
'IMMEDIATE',
2,
'DEFERRED',
3,
'IMMEDIATE',
'FALSE'),
decode(bitand(ksppiflg, 4),
4,
'FALSE',
decode(bitand(ksppiflg / 65536, 3), 0, 'FALSE', 'TRUE')),
decode(bitand(ksppstvf, 7), 1, 'MODIFIED', 4, 'SYSTEM_MOD', 'FALSE'),
decode(bitand(ksppstvf, 2), 2, 'TRUE', 'FALSE'),
decode(bitand(ksppilrmflg / 64, 1), 1, 'TRUE', 'FALSE'),
ksppdesc,
ksppstcmnt,
ksppihash
from x$ksppi x, x$ksppcv y
where (x.indx = y.indx);
ORA-08102: index key not found, obj# 39, file 1, block 59847 (2)
從上面的8102錯誤來看，很明顯是數(shù)據(jù)字典信息不一致了，也就是說該記錄在ind$可能已經(jīng)被清除了，
而在obj$中還存在。我們來看看obj# 39是什么對象？
SQL> SELECT relative_fno, owner, segment_name, segment_type
2 FROM dba_extents
3 WHERE file_id = 1
4 AND 59847 BETWEEN block_id AND block_id + blocks - 1;
RELATIVE_FNO OWNER SEGMENT_NAME SEGMENT_TYPE
------------ ------- ------------------------------ ------------------
1 SYS I_OBJ4 INDEX
SQL>
SQL> select owner,object_name,object_type,object_id from
2 dba_objects where object_name='I_OBJ4';
OWNER OBJECT_NAME OBJECT_TYPE OBJECT_ID
-------------------- ------------------------- ------------------- ----------
SYS I_OBJ4 INDEX 39
SQL>
對于ora-08102錯誤，如果是發(fā)生在index上，那么我們直接drop index然后重建就ok了。
那我們來試試直接重建會怎么樣？
SQL> alter system set event='38003 trace name context forever, level 10' scope=spfile;
System altered.
SQL> shutdown immediate;
Database closed.
Database dismounted.
ORACLE instance shut down.
SQL> startup
ORACLE instance started.
Total System Global Area 167395328 bytes
Fixed Size 1335220 bytes
Variable Size 104857676 bytes
Database Buffers 58720256 bytes
Redo Buffers 2482176 bytes
Database mounted.
Database opened.
SQL> alter index I_OBJ4 rebuild;
alter index I_OBJ4 rebuild
*
ERROR at line 1:
ORA-00604: error occurred at recursive SQL level 1
ORA-00060: deadlock detected while waiting for resource
SQL> shutdown abort;
ORACLE instance shut down.
SQL> startup migrate;
ORACLE instance started.
Total System Global Area 167395328 bytes
Fixed Size 1335220 bytes
Variable Size 104857676 bytes
Database Buffers 58720256 bytes
Redo Buffers 2482176 bytes
Database mounted.
Database opened.
SQL> alter index I_OBJ4 rebuild;
alter index I_OBJ4 rebuild
*
ERROR at line 1:
ORA-00604: error occurred at recursive SQL level 1
ORA-00060: deadlock detected while waiting for resource
SQL> drop index I_OBJ4;
drop index I_OBJ4
*
ERROR at line 1:
ORA-00701: object necessary for warmstarting database cannot be altered
SQL> alter index I_OBJ4 rebuild online;
alter index I_OBJ4 rebuild online
*
ERROR at line 1:
ORA-00604: error occurred at recursive SQL level 1
ORA-08102: index key not found, obj# 39, file 1, block 59847 (2)
SQL> analyze table obj$ VALIDATE STRUCTURE CASCADE;
analyze table obj$ VALIDATE STRUCTURE CASCADE
*
ERROR at line 1:
ORA-01499: table/index cross reference failure - see trace file
到這里，可能有人會問，為什么使用event 38003或migrate 模式無法rebuild 該index呢？
很簡單，該index的obj# <56, 換句話說，也就是對于bootstrap$核心對象是無法通過上面
的2種方式來完成重建的。
通常來說到這個地步，如果不使用其他手段的話，那么只能使用ODU或DUL進行抽取數(shù)據(jù)然后重建數(shù)據(jù)庫了。
其實對于這個問題，我們可以借助BBED來進行修復。
既然是數(shù)據(jù)不一致，那么我就想知道到底是哪兒不一致了？metalink 提供處理ora-8102的方法：
SQL> SELECT /*+ FULL(t1) */ DATAOBJ#, TYPE#,OWNER#,rowid
2 FROM obj$ t1
3 MINUS
4 SELECT /*+ index(t I_OBJ4) */ DATAOBJ#, TYPE#,OWNER#,rowid
5 FROM obj$ t;
DATAOBJ# TYPE# OWNER# ROWID
---------- ---------- ---------- ------------------
73416 2 0 AAAAASAABAAAPt8AAB
73419 0 0 AAAAASAABAAAADxAAb
SQL> select obj#,OWNER#,NAME,TYPE#,STATUS,FLAGS from obj$ where rowid='AAAAASAABAAAPt8AAB';
OBJ# OWNER# NAME TYPE# STATUS FLAGS
---------- ---------- ------------------------------ ---------- ---------- ----------
73416 0 TEST01 2 1 0
SQL> select obj#,OWNER#,NAME,TYPE#,STATUS,FLAGS from obj$ where rowid='AAAAASAABAAAADxAAb';
OBJ# OWNER# NAME TYPE# STATUS FLAGS
---------- ---------- ------------------------------ ---------- ---------- ----------
1 0 _NEXT_OBJECT 0 0 0
SQL>
SQL> select case when (NextObjNum - MaxObjNum) > 0
2 then 'GOOD'
else 'BAD'
end "OBJ_NUM_STATE"
from (select (select dataobj#
3 4 5 6 from sys.obj$
7 where name = '_NEXT_OBJECT') NextObjNum,
8 (select max(obj#)
9 from sys.obj$) MaxObjNum
10 from dual);
OBJ_
----
GOOD
從這里來看，_NEXT_OBJECT是ok的。那么我們重點就放在TEST01上了。
到這里，看到test01，我才想起這是很久以前做關(guān)于手工構(gòu)造某個由于數(shù)據(jù)字典信息不一致而引發(fā)的某個600錯誤
而留下的隱患。
根據(jù)前面的報錯，我們找到相應(yīng)的trace，發(fā)現(xiàn)如下信息：
oer 8102.2 - obj# 39, rdba: 0x0040e9c7(afn 1, blk# 59847)
kdk key 8102.2:
ncol: 4, len: 16
key: (16): 04 c3 08 23 14 01 80 01 80 06 00 40 00 f1 00 1b
mask: (2048):
這里簡單的進行說明：
ncol ---表示列數(shù)目
len ---表示長度
key: (<length>):<hexadecimal value>
關(guān)于ora-08012錯誤，大家可以參考 OERR: ORA-8102 "index key not found, obj# %s, file %s, block %s (%s)" [ID 8102.1]
下面我們繼續(xù)，既然該block有問題，那么我就dump該block。
alter system dump datafile 1 block 59847
確定為如下2行數(shù)據(jù)：
row#131[2131] flag: ---D--, lock: 3, len=18
col 0; len 4; (4): c3 08 23 0a
col 1; len 1; (1): 80
col 2; len 1; (1): 80
col 3; len 6; (6): 00 40 00 f1 00 1b
row#133[2113] flag: ------, lock: 3, len=18
col 0; len 4; (4): c3 08 23 0f
col 1; len 1; (1): 80
col 2; len 1; (1): 80
col 3; len 6; (6): 00 40 00 f1 00 1b
SQL> select 2131+44+24*3 from dual;
2131+44+24*3
------------
2247
BBED> set file 1 block 59847
FILE# 1
BLOCK# 59847
BBED> set offset 2247
OFFSET 2247
BBED> d /v File: /oracle/product/oradata/roger/system01.dbf (1) Block: 59847 Offsets: 2247 to 2758 Dba:0x0040e9c7 ------------------------------------------------------- 010304c3 08230a01 80018006 004000f1 l .....#.......@.. 001b0000 04c30823 0202c102 01800600 l .......#........ 40fb7c00 1a010003 c3082302 c1020180 l @.|.......#..... 060040fb 7c001b00 0004c308 226402c1 l ..@.|......."d.. 03018006 00402750 00090100 04c30822 l .....@'P......." 6202c102 01800600 40fb7c00 1a010004 l b.......@.|..... c3082263 02c10201 80060040 fb7c001c l .."c.......@.|.. 010004c3 08230501 80018006 004000f1 l .....#.......@.. 001b0100 04c30822 6002c102 01800600 l ......."`....... 40fb7c00 1a010004 c3082264 01800180 l @.|......."d.... 06004000 f1001b01 0004c308 225e02c1 l ..@........."^.. 02018006 0040fb7c 001c0100 04c30822 l .....@.|......." 5d02c102 01800600 40fb7c00 1b010004 l ].......@.|..... c308225b 02c10201 80060040 fb7c001c l .."[.......@.|.. 010004c3 08225a02 c1020180 060040fb l ....."Z.......@. 7c001a01 0004c308 225f0180 01800600 l |......."_...... 4000f100 1b010004 c3082256 02c11501 l @........."V.... 80060040 fb7c0019 000004c3 08225702 l ...@.|......."W. c1150180 060040fb 7c001801 0004c308 l ......@.|....... 225502c1 14018006 0040fb7b 000f0000 l "U.......@.{.... 04c30822 5402c114 01800600 40fb7c00 l ..."T.......@.|. 17010004 c308225a 01800180 06004000 l ......"Z......@. f1001b01 0004c308 225202c1 15018006 l ........"R...... 0040fb7c 00160000 04c30822 5302c115 l .@.|......."S... 01800600 40fb7c00 15010004 c3082251 l ....@.|......."Q 02c11401 80060040 fb7b000c 000004c3 l .......@.{...... 08225002 c1140180 060040fb 7c001401 l ."P.......@.|... 0004c308 22550180 01800600 4000f100 l ...."U......@... 1b010004 c308224e 02c11501 80060040 l ......"N.......@ fb7c0013 000004c3 08224f02 c1150180 l .|......."O..... 060040fb 7c001201 0004c308 224d02c1 l ..@.|......."M.. 14018006 0040fb7b 00090000 04c30822 l .....@.{......." <16 bytes per line>
BBED>
BBED> modify /x 14 offset 2253
File: /oracle/product/oradata/roger/system01.dbf (1)
Block: 59847 Offsets: 2253 to 2764 Dba:0x0040e9c7
------------------------------------------------------------------------
14018001 80060040 00f1001b 000004c3 08230202 c1020180 060040fb 7c001a01
0003c308 2302c102 01800600 40fb7c00 1b000004 c3082264 02c10301 80060040
27500009 010004c3 08226202 c1020180 060040fb 7c001a01 0004c308 226302c1
02018006 0040fb7c 001c0100 04c30823 05018001 80060040 00f1001b 010004c3
08226002 c1020180 060040fb 7c001a01 0004c308 22640180 01800600 4000f100
1b010004 c308225e 02c10201 80060040 fb7c001c 010004c3 08225d02 c1020180
060040fb 7c001b01 0004c308 225b02c1 02018006 0040fb7c 001c0100 04c30822
5a02c102 01800600 40fb7c00 1a010004 c308225f 01800180 06004000 f1001b01
0004c308 225602c1 15018006 0040fb7c 00190000 04c30822 5702c115 01800600
40fb7c00 18010004 c3082255 02c11401 80060040 fb7b000f 000004c3 08225402
c1140180 060040fb 7c001701 0004c308 225a0180 01800600 4000f100 1b010004
c3082252 02c11501 80060040 fb7c0016 000004c3 08225302 c1150180 060040fb
7c001501 0004c308 225102c1 14018006 0040fb7b 000c0000 04c30822 5002c114
01800600 40fb7c00 14010004 c3082255 01800180 06004000 f1001b01 0004c308
224e02c1 15018006 0040fb7c 00130000 04c30822 4f02c115 01800600 40fb7c00
12010004 c308224d 02c11401 80060040 fb7b0009 000004c3 08224c02 c1140180
<32 bytes per line>
BBED> sum apply
Check value for File 1, Block 59847:
current = 0xe5a9, required = 0xe5a9
BBED> modify /x 14 offset 2235
File: /oracle/product/oradata/roger/system01.dbf (1)
Block: 59847 Offsets: 2235 to 2746 Dba:0x0040e9c7
------------------------------------------------------------------------
14018001 80060040 00f1001b 010304c3 08231401 80018006 004000f1 001b0000
04c30823 0202c102 01800600 40fb7c00 1a010003 c3082302 c1020180 060040fb
7c001b00 0004c308 226402c1 03018006 00402750 00090100 04c30822 6202c102
01800600 40fb7c00 1a010004 c3082263 02c10201 80060040 fb7c001c 010004c3
08230501 80018006 004000f1 001b0100 04c30822 6002c102 01800600 40fb7c00
1a010004 c3082264 01800180 06004000 f1001b01 0004c308 225e02c1 02018006
0040fb7c 001c0100 04c30822 5d02c102 01800600 40fb7c00 1b010004 c308225b
02c10201 80060040 fb7c001c 010004c3 08225a02 c1020180 060040fb 7c001a01
0004c308 225f0180 01800600 4000f100 1b010004 c3082256 02c11501 80060040
fb7c0019 000004c3 08225702 c1150180 060040fb 7c001801 0004c308 225502c1
14018006 0040fb7b 000f0000 04c30822 5402c114 01800600 40fb7c00 17010004
c308225a 01800180 06004000 f1001b01 0004c308 225202c1 15018006 0040fb7c
00160000 04c30822 5302c115 01800600 40fb7c00 15010004 c3082251 02c11401
80060040 fb7b000c 000004c3 08225002 c1140180 060040fb 7c001401 0004c308
22550180 01800600 4000f100 1b010004 c308224e 02c11501 80060040 fb7c0013
000004c3 08224f02 c1150180 060040fb 7c001201 0004c308 224d02c1 14018006
<32 bytes per line>
BBED> sum apply
Check value for File 1, Block 59847:
current = 0xfea9, required = 0xfea9
BBED> verify
DBVERIFY - Verification starting
FILE = /oracle/product/oradata/roger/system01.dbf
BLOCK = 59847
Block Checking: DBA = 4254151, Block Type = KTB-managed data block
**** row 132: key out of order
---- end index block validation
Block 59847 failed with check code 6401
DBVERIFY - Verification complete
Total Blocks Examined : 1
Total Blocks Processed (Data) : 0
Total Blocks Failing (Data) : 0
Total Blocks Processed (Index): 1
Total Blocks Failing (Index): 1
Total Blocks Empty : 0
Total Blocks Marked Corrupt : 0
Total Blocks Influx : 0
Message 531 not found; product=RDBMS; facility=BBED
BBED>
最后重啟后，創(chuàng)建成功，再次檢查發(fā)現(xiàn)一切ok。
BBED> verify
DBVERIFY - Verification starting
FILE = /oracle/product/oradata/roger/system01.dbf
BLOCK = 59847
DBVERIFY - Verification complete
Total Blocks Examined : 1
Total Blocks Processed (Data) : 0
Total Blocks Failing (Data) : 0
Total Blocks Processed (Index): 1
Total Blocks Failing (Index): 0
Total Blocks Empty : 0
Total Blocks Marked Corrupt : 0
Total Blocks Influx : 0
Message 531 not found; product=RDBMS; facility=BBED
最后嘗試創(chuàng)建視圖，發(fā)現(xiàn)一切正常，如下：
SQL> create or replace view show_hidden_v$parameter
2 (INST_ID, NUM , NAME , TYPE , VALUE , DISPLAY_VALUE, ISDEFAULT , ISSES_MODIFIABLE , ISSYS_MODIFIABLE , ISINSTANCE_MODIFIABLE,
3 ISMODIFIED , ISADJUSTED , ISDEPRECATED, DESCRIPTION, UPDATE_COMMENT, HASH)
4 as
5 select x.inst_id,
6 x.indx + 1,
7 ksppinm,
8 ksppity,
9 ksppstvl,
10 ksppstdvl,
11 ksppstdf,
12 decode(bitand(ksppiflg / 256, 1), 1, 'TRUE', 'FALSE'),
13 decode(bitand(ksppiflg / 65536, 3),
14 1,
15 'IMMEDIATE',
16 2,
17 'DEFERRED',
18 3,
19 'IMMEDIATE',
20 'FALSE'),
21 decode(bitand(ksppiflg, 4),
22 4,
23 'FALSE',
24 decode(bitand(ksppiflg / 65536, 3), 0, 'FALSE', 'TRUE')),
25 decode(bitand(ksppstvf, 7), 1, 'MODIFIED', 4, 'SYSTEM_MOD', 'FALSE'),
26 decode(bitand(ksppstvf, 2), 2, 'TRUE', 'FALSE'),
27 decode(bitand(ksppilrmflg / 64, 1), 1, 'TRUE', 'FALSE'),
28 ksppdesc,
29 ksppstcmnt,
30 ksppihash
31 from x$ksppi x, x$ksppcv y
32 where (x.indx = y.indx);
View created. | 
免費注冊
發(fā)表于 2011-12-22 08:54