如何遷移ASM資料檔案到檔案系統

網上搜尋了一下， 大概有以下四種方法 :  

1.
... ro_asm_access1.html
ASM Access Through FTP and HTML Using XDB Configuration

2.rman

3.dbms_file_transfer

4.11g asmcmd cp

 

-----------------------------------------------
Method 1 : 使用 ASMCMD 工具
-----------------------------------------------

In this method, we are copying the datafile “TS1.256.739191187″ in diskgroup DG1 from ASM to “ts2.dbf” on to the file

system.

 

[oracle@dhcppc1 datafiles]$ pwd
/u01/datafiles
[oracle@dhcppc1 datafiles]$ ls
[oracle@dhcppc1 datafiles]$

[oracle@dhcppc1 ~]$ asmcmd
ASMCMD> ls -lt
State    Type    Rebal  Name
MOUNTED  EXTERN  N      DATA/
MOUNTED  EXTERN  N      DG1/
MOUNTED  EXTERN  N      FRA/
MOUNTED  EXTERN  N      OCR/
ASMCMD> cd dg1
ASMCMD> cd testdb/datafile
ASMCMD> ls -lt
Type      Redund  Striped  Time             Sys  Name
DATAFILE  UNPROT  COARSE   DEC 31 13:00:00  Y    TS1.256.739191187
ASMCMD> cp TS1.256.739191187 /u01/datafiles/ts2.dbf
copying +dg1/testdb/datafile/TS1.256.739191187 -> /u01/datafiles/ts2.dbf
ASMCMD>

[oracle@dhcppc1 datafiles]$ ls -lrt
total 525208
-rw-r—– 1 oracle oinstall 314580992 Dec 31 13:17 ts2.dbf
[oracle@dhcppc1 datafiles]$

 

 

--------------------------------------------
Method 2 : 使用RMAN
--------------------------------------------

[oracle@dhcppc1 datafiles]$ pwd
/u01/datafiles
[oracle@dhcppc1 datafiles]$ ls
[oracle@dhcppc1 datafiles]$

 

SQL> create tablespace ts1 datafile ‘+DG1′ size 20m;

Tablespace created.

SQL> select tablespace_name,status from dba_tablespaces where  tablespace_name=’TS1′;

TABLESPACE_NAME STATUS
————— ———
TS1             ONLINE

SQL> select file_name,status from dba_data_files where file_id=8;

FILE_NAME                                          STATUS
————————————————– ———
+DG1/testdb/datafile/ts1.256.739204397             AVAILABLE

[oracle@dhcppc1 datafiles]$ rman target / nocatalog

Recovery Manager: Release 11.2.0.1.0 – Production on Fri Dec 31 14:34:15 2010

Copyright (c) 1982, 2009, Oracle and/or its affiliates.  All rights reserved.

connected to target database: TESTDB (DBID=2521935115)
using target database control file instead of recovery catalog

RMAN> copy datafile 8 to ‘/u01/datafiles/ts1.dbf’;

Starting backup at 31-DEC-10
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=31 device type=DISK
channel ORA_DISK_1: starting datafile copy
input datafile file number=00008 name=+DG1/testdb/datafile/ts1.256.739204397
output file name=/u01/datafiles/ts1.dbf tag=TAG20101231T143435 RECID=7 STAMP=739204478
channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:03
Finished backup at 31-DEC-10

RMAN>

[oracle@dhcppc1 datafiles]$ ls -lrt
total 525208
-rw-r—– 1 oracle dba      314580992 Dec 31 14:40 ts1.dbf
[oracle@dhcppc1 datafiles]$

 

--------------------------------------------
Method 3 : 使用 DBMS 包
--------------------------------------------

SQL> select file_name from dba_data_files;

 

FILE_NAME
——————————————————————————–
+DATA/testdb/datafile/users.259.738606665
+DATA/testdb/datafile/undotbs1.258.738606665
+DATA/testdb/datafile/sysaux.257.738606663
+DATA/testdb/datafile/system.256.738606661
+DATA/testdb/datafile/example.269.738607053
+DATA/testdb/datafile/test.271.738755277
+TESTDG/testdb/datafile/test1.257.738755445
+DG1/testdb/datafile/ts1.256.739191187

8 rows selected.

SQL> desc dbms_file_transfer
PROCEDURE COPY_FILE
Argument Name                  Type                    In/Out Default?
—————————— ———————– —— ——–
SOURCE_DIRECTORY_OBJECT        VARCHAR2                IN
SOURCE_FILE_NAME               VARCHAR2                IN
DESTINATION_DIRECTORY_OBJECT   VARCHAR2                IN
DESTINATION_FILE_NAME          VARCHAR2                IN
PROCEDURE GET_FILE
Argument Name                  Type                    In/Out Default?
—————————— ———————– —— ——–
SOURCE_DIRECTORY_OBJECT        VARCHAR2                IN
SOURCE_FILE_NAME               VARCHAR2                IN
SOURCE_DATABASE                VARCHAR2                IN
DESTINATION_DIRECTORY_OBJECT   VARCHAR2                IN
DESTINATION_FILE_NAME          VARCHAR2                IN
PROCEDURE PUT_FILE
Argument Name                  Type                    In/Out Default?
—————————— ———————– —— ——–
SOURCE_DIRECTORY_OBJECT        VARCHAR2                IN
SOURCE_FILE_NAME               VARCHAR2                IN
DESTINATION_DIRECTORY_OBJECT   VARCHAR2                IN
DESTINATION_FILE_NAME          VARCHAR2                IN
DESTINATION_DATABASE           VARCHAR2                IN

SQL> create directory TEST_DIR as ‘+DG1/testdb/datafile/’;

Directory created.

SQL> create directory TARGET_DIR as ‘/u01/datafiles/’;

Directory created.

SQL> !ls -lrt /u01/datafiles/
total 0

SQL> BEGIN
dbms_file_transfer.copy_file(source_directory_object =>
‘TEST_DIR’, source_file_name => ‘ts1.256.739191187′,
destination_directory_object => ‘TARGET_DIR’,
destination_file_name => ‘ts1.dbf’);
END;
/   2    3    4    5    6    7

PL/SQL procedure successfully completed.

SQL> SQL>
SQL> !ls -lrt /u01/datafiles/
total 307512
-rw-r—– 1 oracle dba 314580992 Dec 31 13:12 ts1.dbf

SQL> select file_name from dba_data_files where tablespace_name=’TS1′;

FILE_NAME
——————————————————————————–
+DG1/testdb/datafile/ts1.256.739191187

SQL>