1 BLOG文档结构图
3、 修复数据文件头的序列号
要想跳过归档还需要数据文件头块的rba。它由seq#、log block#、偏移量(固定为16)组成，决定了数据文件从哪个归档日志的哪个位置开始应用归档。Rba位于数据文件头块偏移量500处开始连续的12个字节，有关RBA的理论知识参考：http://blog.itpub.net/26736162/viewspace-2079337/
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BBED> d /v dba 1,1 offset 500 count 64 File: /tmp/a.dbf (1) Block: 1 Offsets: 500 to 563 Dba:0x00400001 ------------------------------------------------------- 00000468 0002c2fe 00100001 06000000 l ...h............ 00000000 00000000 00000000 00000000 l ................ 00000000 00000000 00000000 00000000 l ................ 00000000 00000000 00000000 00000000 l ................
<16 bytes per line>
BBED> modify /x 00003275 dba 1,1 offset 500 File: /tmp/a.dbf (1) Block: 1 Offsets: 500 to 563 Dba:0x00400001 ------------------------------------------------------------------------ 00003275 0002c2fe 00000010 06000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
<32 bytes per line>
BBED> sum apply Check value for File 1, Block 1: current = 0xd21f, required = 0xd21f
BBED> modify /x 00000002 dba 1,1 offset 504 File: /tmp/a.dbf (1) Block: 1 Offsets: 504 to 567 Dba:0x00400001 ------------------------------------------------------------------------ 00000002 00000010 06000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
<32 bytes per line>
BBED> sum apply Check value for File 1, Block 1: current = 0x10e1, required = 0x10e1
BBED> modify /x 00000010 dba 1,1 offset 508 File: /tmp/a.dbf (1) Block: 1 Offsets: 508 to 571 Dba:0x00400001 ------------------------------------------------------------------------ 00000010 06000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
<32 bytes per line>
BBED> sum apply Check value for File 1, Block 1: current = 0xd21f, required = 0xd21f
BBED> d /v dba 1,1 offset 500 count 64 File: /tmp/a.dbf (1) Block: 1 Offsets: 500 to 563 Dba:0x00400001 ------------------------------------------------------- 00003275 00000002 00000010 06000000 l ..2u............ 00000000 00000000 00000000 00000000 l ................ 00000000 00000000 00000000 00000000 l ................ 00000000 00000000 00000000 00000000 l ................
<16 bytes per line>
BBED> p kcvfhckp struct kcvfhckp, 160 bytes @484 struct kcvcpscn, 8 bytes @484 ub4 kscnbas @484 0xab647c08 ub2 kscnwrp @488 0x0003 ub4 kcvcptim @492 0x342e3478 ub2 kcvcpthr @496 0x0002 union u, 12 bytes @500 struct kcvcprba, 12 bytes @500 ub4 kcrbaseq @500 0x00003275 ub4 kcrbabno @504 0x00000002 ub2 kcrbabof @508 0x0000 ub1 kcvcpetb[0] @512 0x06 ub1 kcvcpetb[1] @513 0x00 ub1 kcvcpetb[2] @514 0x00 ub1 kcvcpetb[3] @515 0x00 |
修复完毕，BBED的任务已经完成。
下边将文件从文件系统拷贝到ASM中：
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[ZFLHRSDB1:root]:/>l /tmp/a.dbf -rw-r----- 1 oracle dba 104865792 Sep 20 17:39 /tmp/a.dbf [ZFLHRSDB1:root]:/>chown grid.dba /tmp/a.dbf [ZFLHRSDB1:root]:/>su - grid [ZFLHRSDB1:grid]:/home/grid>asmcmd ASMCMD> cp /tmp/a.dbf +DATA1/oralhrs/datafile/a.dbf copying /tmp/a.dbf -> +DATA1/oralhrs/datafile/a.dbf ASMCMD> [ZFLHRSDB1:root]:/>su - oracle [ZFLHRSDB1:oracle]:/oracle>sqlplus / as sysdba
SQL*Plus: Release 11.2.0.3.0 Production on Tue Sep 20 17:47:21 2016
Copyright (c) 1982, 2011, Oracle. All rights reserved.
Connected to: Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production With the Partitioning, Real Application Clusters, Automatic Storage Management, OLAP, Data Mining and Real Application Testing options
SYS@oraLHRD1> alter database rename file '+DATA1/oralhrs/datafile/tbs101.262.923076161' TO '+DATA1/oralhrs/datafile/a.dbf';
Database altered.
SELECT a.FILE#,a.NAME,a.RECOVER,a.CHECKPOINT_CHANGE#,status FROM v$datafile_header a WHERE A.FILE# IN (1,2,64);
====>>>>>从截图可以看出虽然是OFFLINE状态，但是CHECKPOINT_CHANGE#已经和其它文件是一致的了。
SYS@oraLHRD1> COL CHANGE# FOR 999999999999999 SYS@oraLHRD1> select file#,online_status,change#,ERROR from v$recover_file;
FILE# ONLINE_ CHANGE# ERROR ---------- ------- ---------------- ----------------------------------------------------------------- 64 OFFLINE 15760391176
SYS@oraLHRD1> recover datafile 64; Media recovery complete.====>>>>>恢复操作成功完成。 SYS@oraLHRD1> alter database datafile 64 online;
Database altered.====>>>>>数据文件成功ONLINE了。
SYS@oraLHRD1> SYS@oraLHRD1> select file#,online_status,change#,ERROR from v$recover_file;
no rows selected====>>>>>没有需要恢复的文件了 SYS@oraLHRD1> COL CHECKPOINT_CHANGE# FOR 999999999999999 SYS@oraLHRD1> SELECT a.FILE#,a.RECOVER,a.CHECKPOINT_CHANGE#,status FROM v$datafile_header a WHERE A.FILE# IN (1,2,64); FILE# REC CHECKPOINT_CHANGE# STATUS ---------- --- ------------------ ------- 1 NO 15760391176 ONLINE 2 NO 15760391176 ONLINE 64 NO 15760480489 ONLINE |
此时再次查询表空间的占用情况，已经可以看到了TBS101的大小了：
接下来创建一个表，看看表空间是否正常：
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SYS@oraLHRD1> CREATE TABLE T_TEST_LHR TABLESPACE TBS101 NOLOGGING AS SELECT * FROM DBA_OBJECTS; Table created. SYS@oraLHRD1> insert into t_test select * from T_TEST_LHR; 198881 rows created. SYS@oraLHRD1> commit; Commit complete. SYS@oraLHRD1> ALTER SYSTEM CHECKPOINT; System altered. SYS@oraLHRD1> |
再次查看表空间大小：
表空间占用从原来的11M到现在的63M，正常了。