[20150929]檢查資料塊.txt
[20150929]檢查資料塊.txt
--一般檢查資料庫的塊是否存在損壞，使用dbv程式。例子：
$ dbv file=/u01/app/oracle11g/oradata/test/system01.dbf
DBVERIFY: Release 11.2.0.3.0 - Production on Tue Sep 29 07:48:28 2015
Copyright (c) 1982, 2011, Oracle and/or its affiliates. All rights reserved.
DBVERIFY - Verification starting : FILE = /u01/app/oracle11g/oradata/test/system01.dbf
DBVERIFY - Verification complete
Total Pages Examined : 106240
Total Pages Processed (Data) : 67096
Total Pages Failing (Data) : 0
Total Pages Processed (Index): 16916
Total Pages Failing (Index): 0
Total Pages Processed (Other): 10114
Total Pages Processed (Seg) : 1
Total Pages Failing (Seg) : 0
Total Pages Empty : 12114
Total Pages Marked Corrupt : 0
Total Pages Influx : 0
Total Pages Encrypted : 0
Highest block SCN : 319181189 (3.319181189)
--但是如果檔案很大檢查就不方便，速度也不快，如果是檢查多個檔案，要一個一個輸入，也是不方便。
--雖然dbv支援start，end引數，但是人為分割程式設計效率不高。簡單一點，可以使用rman來完成這個工作。
RMAN> VALIDATE database ;
Starting validate at 2015-09-29 07:52:26
using target database control file instead of recovery catalog
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=12 device type=DISK
allocated channel: ORA_DISK_2
channel ORA_DISK_2: SID=201 device type=DISK
allocated channel: ORA_DISK_3
channel ORA_DISK_3: SID=396 device type=DISK
channel ORA_DISK_1: starting validation of datafile
channel ORA_DISK_1: specifying datafile(s) for validation
input datafile file number=00003 name=/u01/app/oracle11g/oradata/test/undotbs01.dbf
input datafile file number=00014 name=/u01/app/oracle11g/oradata/test/tbs_ts2_01.dbf
input datafile file number=00005 name=/u01/app/oracle11g/oradata/test/example01.dbf
input datafile file number=00007 name=/u01/app/oracle11g/oradata/test/tools01.dbf
input datafile file number=00009 name=/u01/app/oracle11g/oradata/test/testmssm01.dbf
channel ORA_DISK_2: starting validation of datafile
channel ORA_DISK_2: specifying datafile(s) for validation
input datafile file number=00002 name=/u01/app/oracle11g/oradata/test/sysaux01.dbf
input datafile file number=00006 name=/u01/app/oracle11g/oradata/test/rman01.dbf
input datafile file number=00008 name=/u01/app/oracle11g/oradata/test/test01.dbf
input datafile file number=00010 name=/u01/app/oracle11g/oradata/test/undotbs02.dbf
input datafile file number=00012 name=/u01/app/oracle11g/oradata/test/tools01x.dbf
channel ORA_DISK_3: starting validation of datafile
channel ORA_DISK_3: specifying datafile(s) for validation
input datafile file number=00004 name=/u01/app/oracle11g/oradata/test/users01.dbf
input datafile file number=00013 name=/u01/app/oracle11g/oradata/test/tbs_ts1_01.dbf
input datafile file number=00001 name=/u01/app/oracle11g/oradata/test/system01.dbf
channel ORA_DISK_1: validation complete, elapsed time: 00:02:39
List of Datafiles
=================
File Status Marked Corrupt Empty Blocks Blocks Examined High SCN
---- ------ -------------- ------------ --------------- ----------
3 OK 0 1 108544 13204083927
File Name: /u01/app/oracle11g/oradata/test/undotbs01.dbf
Block Type Blocks Failing Blocks Processed
---------- -------------- ----------------
Data 0 0
Index 0 0
Other 0 108543
..... snap...
channel ORA_DISK_1: validation complete, elapsed time: 00:00:03
List of Control File and SPFILE
===============================
File Type Status Blocks Failing Blocks Examined
------------ ------ -------------- ---------------
Control File OK 0 1232
channel ORA_DISK_3: validation complete, elapsed time: 00:03:17
List of Datafiles
=================
File Status Marked Corrupt Empty Blocks Blocks Examined High SCN
---- ------ -------------- ------------ --------------- ----------
1 OK 0 12114 106242 13204083927
File Name: /u01/app/oracle11g/oradata/test/system01.dbf
Block Type Blocks Failing Blocks Processed
---------- -------------- ----------------
Data 0 67096
Index 0 16916
Other 0 10114
File Status Marked Corrupt Empty Blocks Blocks Examined High SCN
---- ------ -------------- ------------ --------------- ----------
4 OK 0 8175 147456 13203948833
File Name: /u01/app/oracle11g/oradata/test/users01.dbf
Block Type Blocks Failing Blocks Processed
---------- -------------- ----------------
Data 0 135887
Index 0 1944
Other 0 1450
File Status Marked Corrupt Empty Blocks Blocks Examined High SCN
---- ------ -------------- ------------ --------------- ----------
13 OK 0 5889 6400 12695454522
File Name: /u01/app/oracle11g/oradata/test/tbs_ts1_01.dbf
Block Type Blocks Failing Blocks Processed
---------- -------------- ----------------
Data 0 376
Index 0 0
Other 0 135
Finished validate at 2015-09-29 07:55:59
--如果仔細看，可以發現開了3個並行。
RMAN> show DEVICE type ;
RMAN configuration parameters for database with db_unique_name TEST are:
CONFIGURE DEVICE TYPE DISK PARALLELISM 3 BACKUP TYPE TO BACKUPSET;
SCOTT@test> select * from v$database_block_corruption;
no rows selected
--檢查單個資料檔案
RMAN> VALIDATE datafile 1 ;
Starting validate at 2015-09-29 08:00:01
using channel ORA_DISK_1
using channel ORA_DISK_2
using channel ORA_DISK_3
channel ORA_DISK_1: starting validation of datafile
channel ORA_DISK_1: specifying datafile(s) for validation
input datafile file number=00001 name=/u01/app/oracle11g/oradata/test/system01.dbf
channel ORA_DISK_2: starting validation of datafile
channel ORA_DISK_2: specifying datafile(s) for validation
including current SPFILE in backup set
channel ORA_DISK_3: starting validation of datafile
channel ORA_DISK_3: specifying datafile(s) for validation
including current control file for validation
channel ORA_DISK_2: validation complete, elapsed time: 00:00:01
List of Control File and SPFILE
===============================
File Type Status Blocks Failing Blocks Examined
------------ ------ -------------- ---------------
SPFILE OK 0 2
channel ORA_DISK_3: validation complete, elapsed time: 00:00:01
List of Control File and SPFILE
===============================
File Type Status Blocks Failing Blocks Examined
------------ ------ -------------- ---------------
Control File OK 0 1232
channel ORA_DISK_1: validation complete, elapsed time: 00:00:18
List of Datafiles
=================
File Status Marked Corrupt Empty Blocks Blocks Examined High SCN
---- ------ -------------- ------------ --------------- ----------
1 OK 0 12114 106242 13204084470
File Name: /u01/app/oracle11g/oradata/test/system01.dbf
Block Type Blocks Failing Blocks Processed
---------- -------------- ----------------
Data 0 67096
Index 0 16916
Other 0 10114
Finished validate at 2015-09-29 08:00:22
--另外11g還支援section size 引數，這樣可以檢查透過這個引數將檔案分成幾個部分同時檢查(在開啟並行的情況下)。
RMAN> VALIDATE section size 200M datafile 1;
Starting validate at 2015-09-29 08:02:10
using channel ORA_DISK_1
using channel ORA_DISK_2
using channel ORA_DISK_3
channel ORA_DISK_1: starting validation of datafile
channel ORA_DISK_1: specifying datafile(s) for validation
input datafile file number=00001 name=/u01/app/oracle11g/oradata/test/system01.dbf
validating blocks 1 through 25600
channel ORA_DISK_2: starting validation of datafile
channel ORA_DISK_2: specifying datafile(s) for validation
including current SPFILE in backup set
channel ORA_DISK_3: starting validation of datafile
channel ORA_DISK_3: specifying datafile(s) for validation
including current control file for validation
channel ORA_DISK_1: validation complete, elapsed time: 00:00:00
channel ORA_DISK_1: starting validation of datafile
channel ORA_DISK_1: specifying datafile(s) for validation
input datafile file number=00001 name=/u01/app/oracle11g/oradata/test/system01.dbf
validating blocks 25601 through 51200
channel ORA_DISK_2: validation complete, elapsed time: 00:00:01
List of Control File and SPFILE
===============================
File Type Status Blocks Failing Blocks Examined
------------ ------ -------------- ---------------
SPFILE OK 0 2
channel ORA_DISK_2: starting validation of datafile
channel ORA_DISK_2: specifying datafile(s) for validation
input datafile file number=00001 name=/u01/app/oracle11g/oradata/test/system01.dbf
validating blocks 51201 through 76800
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
channel ORA_DISK_1: validation complete, elapsed time: 00:00:01
channel ORA_DISK_1: starting validation of datafile
channel ORA_DISK_1: specifying datafile(s) for validation
input datafile file number=00001 name=/u01/app/oracle11g/oradata/test/system01.dbf
validating blocks 76801 through 102400
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
channel ORA_DISK_3: validation complete, elapsed time: 00:00:02
List of Control File and SPFILE
===============================
File Type Status Blocks Failing Blocks Examined
------------ ------ -------------- ---------------
Control File OK 0 1232
channel ORA_DISK_3: starting validation of datafile
channel ORA_DISK_3: specifying datafile(s) for validation
input datafile file number=00001 name=/u01/app/oracle11g/oradata/test/system01.dbf
validating blocks 102401 through 106240
channel ORA_DISK_1: validation complete, elapsed time: 00:00:01
channel ORA_DISK_2: validation complete, elapsed time: 00:00:01
channel ORA_DISK_3: validation complete, elapsed time: 00:00:00
List of Datafiles
=================
File Status Marked Corrupt Empty Blocks Blocks Examined High SCN
---- ------ -------------- ------------ --------------- ----------
1 OK 0 12114 106238 13204085021
File Name: /u01/app/oracle11g/oradata/test/system01.dbf
Block Type Blocks Failing Blocks Processed
---------- -------------- ----------------
Data 0 67096
Index 0 16916
Other 0 10110
Finished validate at 2015-09-29 08:02:16
--注意看~.
--使用rman的VALIDATE簡單快捷不少。
來自 “ ITPUB部落格 ” ，連結：http://blog.itpub.net/267265/viewspace-1811265/，如需轉載，請註明出處，否則將追究法律責任。
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