使用dbms_repair修复块损坏的具体示例

使用dbms_repair修复块损坏的具体示例:

SQL> create tablespace block datafile D:oracleoradataoracle9ilock.dbf size 5M;

Tablespace created

SQL> connect dlinger/dlinger

Connected to Oracle9i Enterprise Edition Release 9.2.0.1.0

Connected as dlinger

QL> create table test tablespace block as select * from all_tables;

Table created

SQL> insert into test select * from test;

806 rows inserted

SQL> insert into test select * from test;

1612 rows inserted

SQL> insert into test select * from test;

3224 rows inserted

SQL> insert into test select * from test;

6448 rows inserted

SQL> insert into test select * from test;

insert into test select * from test

ORA-01653: 表DLINGER.TEST无法通过128（在表空间BLOCK中）扩展

SQL> commit;

Commit complete

SQL> select count(*) from test;

COUNT(*)

----------

12896

SQL> create index i_test on test(table_name);

Index created

SQL> alter system checkpoint;

System altered

SQL> connect sys/sys as sysdba

已连接。

SQL> shutdown immediate

数据库已经关闭。

已经卸载数据库。

ORACLE 例程已经关闭。

--使用UltraEdit编辑block.dbf，修改几个字符

SQL> startup

ORACLE 例程已经启动。

Total System Global Area 72424008 bytes

Fixed Size 453192 bytes

Variable Size 46137344 bytes

Database Buffers 25165824 bytes

Redo Buffers 667648 bytes

数据库装载完毕。

数据库已经打开。

SQL> select count(*) from dlinger.test;

select count(*) from dlinger.test

*

ERROR 位于第 1 行:

ORA-01578: ORACLE 数据块损坏（文件号14，块号160）

ORA-01110: 数据文件 14: D:ORACLEORADATAORACLE9IBLOCK.DBF

用dbv检查：

C:Documents and Settingsduanl>dbv file=D:oracleoradataoracle9ilock.dbf

blocksize=8192

DBVERIFY: Release 9.2.0.1.0 - Production on 星期二 8月 24 19:58:15 2004

Copyright (c) 1982, 2002, Oracle Corporation. All rights reserved.

DBVERIFY - 验证正在开始 : FILE = D:oracleoradataoracle9ilock.dbf

标记为损坏的页160

***

Corrupt block relative dba: 0x038000a0 (file 14, block 160)

Bad check value found during dbv:

Data in bad block -

type: 6 format: 2 rdba: 0x038000a0

last change scn: 0x0000.0035f5c2 seq: 0x1 flg: 0x06

consistency value in tail: 0xf5c20601

check value in block header: 0x3681, computed block checksum: 0x5bb

spare1: 0x0, spare2: 0x0, spare3: 0x0

***

DBVERIFY - 验证完成

检查的页总数 ：640

处理的页总数（数据）：510

失败的页总数（数据）：0

处理的页总数（索引）：0

失败的页总数（索引）：0

处理的页总数（其它）：9

处理的总页数 (段) : 0

失败的总页数 (段) : 0

空的页总数 ：120

标记为损坏的总页数：1

汇入的页总数 ：0

使用dbms_repair包

1.创建管理表：

SQL> connect sys/sys as sysdba

Connected to Oracle9i Enterprise Edition Release 9.2.0.1.0

Connected as SYS

SQL> exec DBMS_REPAIR.ADMIN_TABLES(REPAIR_TABLE,1,1,USERS);

PL/SQL procedure successfully completed

SQL> exec DBMS_REPAIR.ADMIN_TABLES(ORPHAN_TABLE,2,1,USERS);

PL/SQL procedure successfully completed

2.检查坏块：dbms_repair.check_object

SQL> declare

2 cc number;

3 begin

4 dbms_repair.check_object(schema_name => DLINGER,object_name => TEST,cor

rupt_count => cc);

5 dbms_output.put_line(a => to_char(cc));

6 end;

7 /

1

PL/SQL 过程已成