1.ASM Access Through FTP and HTML Using XDB Configuration

2.rman

3.dbms_file_transfer

4.11g asmcmd

利用RMAN将数据库从文件系统迁移到ASM
一、打开ASM实例
[oracle@ASM ~]$ echo $ORACLE_SID
+ASM
[oracle@ASM ~]$ sqlplus /nolog

SQL*Plus: Release 10.2.0.1.0 - Production on Mon Apr 6 01:01:28 2009

Copyright (c) 1982, 2005, Oracle.  All rights reserved.

SQL> conn / as sysdba
Connected to an idle instance.
SQL> startup 
ASM instance started

Total System Global Area   79691776 bytes
Fixed Size                  1217812 bytes
Variable Size              53308140 bytes
ASM Cache                  25165824 bytes
ASM diskgroups mounted
SQL> select name,state from v$asm_diskgroup;

NAME                           STATE
------------------------------ -----------
DATA                           MOUNTED
DGROUP1                       MOUNTED 
二、修改目标数据库(TOASM)的SPFILE
SQL> ALTER SYSTEM SET CONTROL_FILES='+DGROUP1'  SCOPE=SPFILE;

System altered.

SQL> ALTER SYSTEM SET DB_CREATE_FILE_DEST='+DGROUP1' SCOPE=SPFILE;

System altered.
三、关闭目标数据库
SQL> SHUTDOWN IMMEDIATE
Database closed.
Database dismounted.
ORACLE instance shut down.
四、通过RMAN连接到目标数据库,并启动到NOMOUNT状态

[oracle@ASM admin]$ rman target /

Recovery Manager: Release 10.2.0.1.0 - Production on Mon Apr 6 01:06:39 2009

Copyright (c) 1982, 2005, Oracle.  All rights reserved.

connected to target database (not started)

RMAN> startup nomount

Oracle instance started

Total System Global Area     230686720 bytes

Fixed Size                     1218676 bytes
Variable Size                 75499404 bytes
Database Buffers             150994944 bytes
Redo Buffers                   2973696 bytes

RMAN> 
五、还原控制文件到ASM磁盘组,并将数据库启动到MOUNT状态

RMAN> RESTORE CONTROLFILE FROM '/u01/oradata/TOASM/control01.ctl';

Starting restore at 06-APR-09
using target database control file instead of recovery catalog
allocated channel: ORA_DISK_1
channel ORA_DISK_1: sid=155 devtype=DISK

channel ORA_DISK_1: copied control file copy
output filename=+DGROUP1/toasm/controlfile/backup.269.683428107
Finished restore at 06-APR-09
RMAN> ALTER DATABASE MOUNT;

database mounted
released channel: ORA_DISK_1

RMAN> 
六、利用RMAN复制数据文件到ASM磁盘组
   RMAN > BACKUP AS COPY DATABASE FORMAT '+DGROUP1';
Starting backup at 06-APR-09
allocated channel: ORA_DISK_1
channel ORA_DISK_1: sid=155 devtype=DISK
channel ORA_DISK_1: starting datafile copy
input datafile fno=00001 name=/u01/oradata/TOASM/system01.dbf
output filename=+DGROUP1/toasm/datafile/system.258.683428337 tag=TAG20090406T011215 recid=2 stamp=683428412
channel ORA_DISK_1: datafile copy complete, elapsed time: 00:01:25
channel ORA_DISK_1: starting datafile copy
input datafile fno=00003 name=/u01/oradata/TOASM/sysaux01.dbf
output filename=+DGROUP1/toasm/datafile/sysaux.259.683428421 tag=TAG20090406T011215 recid=3 stamp=683428457
channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:45
channel ORA_DISK_1: starting datafile copy
input datafile fno=00005 name=/u01/oradata/TOASM/example01.dbf
output filename=+DGROUP1/toasm/datafile/example.261.683428467 tag=TAG20090406T011215 recid=4 stamp=683428481
channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:15
channel ORA_DISK_1: starting datafile copy
input datafile fno=00002 name=/u01/oradata/TOASM/undotbs01.dbf
output filename=+DGROUP1/toasm/datafile/undotbs1.260.683428483 tag=TAG20090406T011215 recid=5 stamp=683428486
channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:07
channel ORA_DISK_1: starting datafile copy
input datafile fno=00004 name=/u01/oradata/TOASM/users01.dbf
output filename=+DGROUP1/toasm/datafile/users.262.683428489 tag=TAG20090406T011215 recid=6 stamp=683428491
channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:03
channel ORA_DISK_1: starting datafile copy
copying current control file
output filename=+DGROUP1/toasm/controlfile/backup.278.683428493 tag=TAG20090406T011215 recid=7 stamp=683428495
channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:03
channel ORA_DISK_1: starting full datafile backupset
channel ORA_DISK_1: specifying datafile(s) in backupset
including current SPFILE in backupset
channel ORA_DISK_1: starting piece 1 at 06-APR-09
channel ORA_DISK_1: finished piece 1 at 06-APR-09
piece handle=+DGROUP1/toasm/backupset/2009_04_06/nnsnf0_tag20090406t011215_0.277.683428497 tag=TAG20090406T011215 comment=NONE
channel ORA_DISK_1: backup set complete, elapsed time: 00:00:05
Finished backup at 06-APR-09

RMAN> 
七、利用RMAN的SWITCH 命令修改控制文件内数据文件的指针,使其指向新位置。

RMAN> SWITCH DATABASE TO COPY;

datafile 1 switched to datafile copy "+DGROUP1/toasm/datafile/system.258.683428337"
datafile 2 switched to datafile copy "+DGROUP1/toasm/datafile/undotbs1.260.683428483"
datafile 3 switched to datafile copy "+DGROUP1/toasm/datafile/sysaux.259.683428421"
datafile 4 switched to datafile copy "+DGROUP1/toasm/datafile/users.262.683428489"
datafile 5 switched to datafile copy "+DGROUP1/toasm/datafile/example.261.683428467"

RMAN> RECOVER DATABASE;

Starting recover at 06-APR-09
using channel ORA_DISK_1

starting media recovery
media recovery complete, elapsed time: 00:00:00

Finished recover at 06-APR-09

RMAN> 
八、打开数据库
   RMAN> ALTER DATABASE OPEN;

database opened
   RMAN>
九、迁移临时文件
由于临时文件不会被迁移,所以我们只需要删除原来的增加新的就可以。

SQL> SELECT NAME FROM V$TEMPFILE;

NAME
--------------------------------------------------
/u01/oradata/TOASM/temp01.dbf

SQL> ALTER TABLESPACE TEMP ADD TEMPFILE '+DGROUP1';

Tablespace altered.

SQL> ALTER TABLESPACE TEMP DROP TEMPFILE '/u01/oradata/TOASM/temp01.dbf';

Tablespace altered.

SQL> SELECT NAME FROM V$TEMPFILE;

NAME
--------------------------------------------------
+DGROUP1/toasm/tempfile/temp.263.683428909

SQL> 
十、增加新的ONLINE REDOLOGS 到ASM
  SQL> SELECT * FROM V$LOG;

GROUP#    THREAD#  SEQUENCE#      BYTES    MEMBERS ARC STATUS           FIRST_CHANGE# FIRST_TIM
---------- ---------- ---------- ---------- ---------- --- ---------------- ------------- ---------
         1          1          5   10485760          1 YES INACTIVE                473286 06-APR-09
         2          1          6   10485760          1 NO  CURRENT                 474627 06-APR-09
         3          1          4   10485760          1 YES INACTIVE                472097 06-APR-09

SQL> ALTER DATABASE ADD LOGFILE '+DGROUP1' SIZE 10M;

Database altered.

SQL> ALTER DATABASE ADD LOGFILE '+DGROUP1' SIZE 10M;

Database altered.

SQL> ALTER DATABASE ADD LOGFILE '+DGROUP1' SIZE 10M;

Database altered.

SQL> ALTER DATABASE DROP LOGFILE GROUP 1;

Database altered.
SQL> ALTER SYSTEM SWITCH LOGFILE;

System altered.

SQL> ALTER SYSTEM SWITCH LOGFILE;

System altered.

SQL> SQL> ALTER DATABASE DROP LOGFILE GROUP 2;
ALTER DATABASE DROP LOGFILE GROUP 2
*
ERROR at line 1:
ORA-01624: log 2 needed for crash recovery of instance TOASM (thread 1)
ORA-00312: online log 2 thread 1: '/u01/oradata/TOASM/redo02.log'

SQL> ALTER SYSTEM CHECKPOINT;

System altered.

SQL> ALTER DATABASE DROP LOGFILE GROUP 2;

Database altered.

SQL>ALTER DATABASE DROP LOGFILE GROUP 3;

Database altered.
SQL> SELECT MEMBER FROM V$LOGFILE;

MEMBER
--------------------------------------------------
+DGROUP1/toasm/onlinelog/group_4.275.683429043
+DGROUP1/toasm/onlinelog/group_5.276.683429047
+DGROUP1/toasm/onlinelog/group_6.264.683429049

SQL> 
十一、最后删除原来的数据库文件

[oracle@ASM ~]$ ls -lh /u01/oradata/TOASM/
total 892M
-rw-r-----  1 oracle oinstall 6.8M Apr  6 01:05 control01.ctl
-rw-r-----  1 oracle oinstall 6.8M Apr  6 01:05 control02.ctl
-rw-r-----  1 oracle oinstall 6.8M Apr  6 01:05 control03.ctl
-rw-r-----  1 oracle oinstall 101M Apr  6 01:05 example01.dbf
-rw-r-----  1 oracle oinstall  11M Apr  6 01:17 redo01.log
-rw-r-----  1 oracle oinstall  11M Apr  6 01:24 redo02.log
-rw-r-----  1 oracle oinstall  11M Apr  6 01:17 redo03.log
-rw-r-----  1 oracle oinstall 231M Apr  6 01:05 sysaux01.dbf
-rw-r-----  1 oracle oinstall 481M Apr  6 01:05 system01.dbf
-rw-r-----  1 oracle oinstall  26M Apr  6 01:05 undotbs01.dbf
-rw-r-----  1 oracle oinstall 5.1M Apr  6 01:05 users01.dbf
[oracle@ASM ~]$ rm -rf /u01/oradata/TOASM/*
[oracle@ASM ~]$ ls -lh /u01/oradata/TOASM/
total 0
[oracle@ASM ~]$ 
迁移完毕!

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