转自:http://www.xifenfei.com/2264.html
作者:惜分飞
1.alert日志
Tue Dec 20 22:09:45 2011
Errors
in
file
/opt/app/oracle/admin/BAS/bdump/bas_m000_27442
.trc:
Wed Dec 21 22:10:45 2011
Errors
in
file
/opt/app/oracle/admin/BAS/bdump/bas_m000_32761
.trc:
Thu Dec 22 22:11:46 2011
Errors
in
file
/opt/app/oracle/admin/BAS/bdump/bas_m000_5935
.trc:
Fri Dec 23 22:12:47 2011
Errors
in
file
/opt/app/oracle/admin/BAS/bdump/bas_m000_11382
.trc:
|
Mnnn performs manageability tasks dispatched to them by MMON. Tasks performed include taking Automatic Workload Repository snapshots and Automatic Database Diagnostic Monitor analysis.
从这个时间点来看,应该是数据库启动GATHER_STATS_JOB收集统计信息时发现这个错误。
2.bas_m000_11382.trc
Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - 64bit Production
With the Partitioning, OLAP and Data Mining options
ORACLE_HOME =
/opt/app/oracle/product/10
.2.0
/db_1
System name: Linux
Node name: bas
Release: 2.6.9-78.ELsmp
Version:
#1 SMP Wed Jul 9 15:46:26 EDT 2008
Machine: x86_64
Instance name: BAS
Redo thread mounted by this instance: 1
Oracle process number: 24
Unix process pid: 11382, image: oracle@bas (m000)
*** ACTION NAME:(Auto-Purge Slave Action) 2011-12-23 22:12:47.074
*** MODULE NAME:(MMON_SLAVE) 2011-12-23 22:12:47.074
*** SERVICE NAME:(SYS$BACKGROUND) 2011-12-23 22:12:47.074
*** SESSION ID:(5465.2033) 2011-12-23 22:12:47.074
oer 8102.2 - obj
# 4152, rdba: 0x00401f7c(afn 1, blk# 8060)
kdk key 8102.2:
ncol: 2, len: 10
key: (10): 02 c1 0a 06 00 c0 04
dc
00 00
mask: (4096):
09 00 00 00 00 fb d1 c0 00 00 00 00 00 70 f8 fe bf 7f 00 00 00
cd
7d 5d 01
|
oer 8102.<code> - obj
# <object id>, rdba: <rdba value>(afn <file#>, blk# <block#>)
kdk key 8102.2:
ncol: <number of columns
in
the key including the rowid>, len: <key length>
key: (<length>):<hexadecimal value>
obj
#: object_id for the affected index in dba_objects.
rdba: relative data block address where the key is supposed to be stored
in
the index.
afn: absolute
file
number where the affected index block is stored.
(file_id
in
dba_data_files,
file
# in v$datafile).
blk
#: Index block number where the key is supposed to be stored.
|
出现oer 8102.2的错误,有两种可能:1.坏块,2.表和索引数据不一致
3.找出相关对象
SQL> col object_name
for
a30
SQL> col owner
for
a10
SQL>
select
object_name,owner,object_type
2
from
dba_objects
where
object_id=4152;
OBJECT_NAME OWNER OBJECT_TYPE
------------------------------ ---------- -------------------
WRI$_SEGADV_OBJLIST_IDX_TS SYS
INDEX
SQL>
select
OWNER,TABLE_NAME
from
dba_indexes
2
where
index_name=
'WRI$_SEGADV_OBJLIST_IDX_TS'
;
OWNER TABLE_NAME
---------- ------------------------------
SYS WRI$_SEGADV_OBJLIST
SQL> ANALYZE
TABLE
sys.WRI$_SEGADV_OBJLIST VALIDATE STRUCTURE
CASCADE
;
ANALYZE
TABLE
sys.WRI$_SEGADV_OBJLIST VALIDATE STRUCTURE
CASCADE
*
ERROR
at
line 1:
ORA-01499:
table
/
index
cross
reference failure - see trace file
|
4.分析坏块(逻辑/物理)
SQL> ANALYZE INDEX WRI$_SEGADV_OBJLIST_IDX_TS VALIDATE STRUCTURE;
Index analyzed.
SQL> ANALYZE TABLE WRI$_SEGADV_OBJLIST VALIDATE STRUCTURE;
Table analyzed.
[oracle@bas bdump]$ dbv
file
=
/opt/app/oracle/oradata/BAS/system01
.dbf
DBVERIFY: Release 10.2.0.1.0 - Production on Sat Dec 24 21:14:38 2011
Copyright (c) 1982, 2005, Oracle. All rights reserved.
DBVERIFY - Verification starting : FILE =
/opt/app/oracle/oradata/BAS/system01
.dbf
DBVERIFY - Verification complete
Total Pages Examined : 552960
Total Pages Processed (Data) : 360156
Total Pages Failing (Data) : 0
Total Pages Processed (Index): 167596
Total Pages Failing (Index): 0
Total Pages Processed (Other): 1961
Total Pages Processed (Seg) : 0
Total Pages Failing (Seg) : 0
Total Pages Empty : 23247
Total Pages Marked Corrupt : 0
Total Pages Influx : 0
Highest block SCN : 2890198330 (2750.2890198330)
|
检测证明,对象以及对象所属的数据文件,无坏块现象
5.分析表和index不一致
--找出index对应列
SQL>
SELECT
table_name , column_name
from
dba_ind_columns
2
WHERE
index_name=
'WRI$_SEGADV_OBJLIST_IDX_TS'
order
by
table_name;
TABLE_NAME COLUMN_NAME
------------------------------ --------------------
WRI$_SEGADV_OBJLIST TS_ID
--确定对应列是否允许为null
SQL>
desc
WRI$_SEGADV_OBJLIST
Name
Null
? Type
----------------------------------------- -------- ----------------------------
AUTO_TASKID NUMBER
TS_ID NUMBER
OBJN NUMBER
OBJD NUMBER
STATUS VARCHAR2(40)
TASK_ID NUMBER
REASON VARCHAR2(40)
REASON_VALUE NUMBER
CREATION_TIME
TIMESTAMP
(6)
PROC_TASKID NUMBER
END_TIME
TIMESTAMP
(6)
SEGMENT_OWNER VARCHAR2(30)
SEGMENT_NAME VARCHAR2(81)
PARTITION_NAME VARCHAR2(30)
SEGMENT_TYPE VARCHAR2(18)
TABLESPACE_NAME VARCHAR2(30)
--确认在表中对应列是否有空值
SQL>
SELECT
/*+
FULL
(t1) */
count
(TS_ID)
2
FROM
WRI$_SEGADV_OBJLIST t1
3
WHERE
t1.TS_ID
IS
NULL
;
COUNT
(TS_ID)
------------
0
--表比index多数据
SQL>
SELECT
/*+
FULL
(t1) */ TS_ID
2
FROM
WRI$_SEGADV_OBJLIST t1
3 MINUS
4
SELECT
/*+
index
(t WRI$_SEGADV_OBJLIST_IDX_TS) */ TS_ID
5
FROM
WRI$_SEGADV_OBJLIST t
where
ts_id
is
not
null
;
no
rows
selected
--index中数据条数
SQL>
SELECT
/*+
index
(t WRI$_SEGADV_OBJLIST_IDX_TS) */
count
(TS_ID)
2
FROM
WRI$_SEGADV_OBJLIST t
3
where
ts_id
is
not
null
;
COUNT
(TS_ID)
------------
901
--表中数据条数
SQL>
SELECT
/*+
FULL
(t1) */
count
(TS_ID)
2
FROM
WRI$_SEGADV_OBJLIST t1 ;
COUNT
(TS_ID)
------------
937
--index中不同值数量
SQL>
SELECT
/*+
index
(t WRI$_SEGADV_OBJLIST_IDX_TS) */
2
COUNT
(
DISTINCT
TS_ID)
3
FROM
WRI$_SEGADV_OBJLIST t
WHERE
TS_ID
IS
NOT
NULL
;
COUNT
(DISTINCTTS_ID)
--------------------
5
--表中不同值数量
SQL>
SELECT
/*+
index
(t WRI$_SEGADV_OBJLIST_IDX_TS) */ TS_ID
2
FROM
WRI$_SEGADV_OBJLIST t
WHERE
ts_id
IS
NOT
NULL
3 MINUS
4
SELECT
/*+
FULL
(t1) */ TS_ID
5
FROM
WRI$_SEGADV_OBJLIST t1 ;
TS_ID
----------
4
--对比可以知道index中的唯一值比表中,这个也就解释了,为什么表中总条数多,
--但是他们两做减法的时候,记录为空
--索引表比表多数据
SQL>
SELECT
/*+
index
(t WRI$_SEGADV_OBJLIST_IDX_TS) */ TS_ID
2
FROM
WRI$_SEGADV_OBJLIST t
WHERE
ts_id
IS
NOT
NULL
3 MINUS
4
SELECT
/*+
FULL
(t1) */ TS_ID
5
FROM
WRI$_SEGADV_OBJLIST t1 ;
TS_ID
----------
4
|
上面的检测证明:1.表中有索引中无的数据,2.索引中有表中不存在数据
6.解决问题
SQL>
alter
index
WRI$_SEGADV_OBJLIST_IDX_TS rebuild online;
Index
altered.
--测试index中总条数
SQL>
SELECT
/*+
index
(t WRI$_SEGADV_OBJLIST_IDX_TS) */
count
(TS_ID)
2
FROM
WRI$_SEGADV_OBJLIST t
3
where
ts_id
is
not
null
;
COUNT
(TS_ID)
------------
937
--无多余index项(以前唯一值为4的记录已经不存在)
SQL>
SELECT
/*+
index
(t WRI$_SEGADV_OBJLIST_IDX_TS) */ TS_ID
2
FROM
WRI$_SEGADV_OBJLIST t
WHERE
ts_id
IS
NOT
NULL
3 MINUS
4
SELECT
/*+
FULL
(t1) */ TS_ID
5
FROM
WRI$_SEGADV_OBJLIST t1 ;
no
rows
selected
--通过上述测试,证明表和index不一致问题解决