把檔案系統的資料檔案遷移到ASM儲存

pxbibm發表於2014-05-14

把檔案系統的資料檔案遷移到ASM儲存

RAC環境,使用的是ASM作儲存.
近日在給使用者做資料庫維護的過程中,發現有一部分資料檔案存放在檔案系統中,這是不正常的。導致另一臺伺服器上跑著的例項就不正常了。
於是需要把檔案系統上的資料檔案遷移到ASM儲存上。

下面模擬該場景
在rac1的節點上操作

未新增資料檔案前資料檔案的情況
SQL> select name from v$datafile;

FILE_NAME
------------------------------------------------------------
+DATA/asmdevdb/datafile/system.273.845258673
+DATA/asmdevdb/datafile/sysaux.274.845258703
+DATA/asmdevdb/datafile/undotbs1.264.845258723
+DATA/asmdevdb/datafile/users.271.845258761

4 rows selected.

SQL> alter tablespace users add datafile 'user01.dbf' size 10m;

Tablespace altered.

SQL> select file_name from dba_data_files;

FILE_NAME
------------------------------------------------------------
+DATA/asmdevdb/datafile/system.273.845258673
+DATA/asmdevdb/datafile/sysaux.274.845258703
+DATA/asmdevdb/datafile/undotbs1.264.845258723
+DATA/asmdevdb/datafile/users.271.845258761
/u01/oracle/product/11.2.0/db_1/dbs/user01.dbf

5 rows selected.

我們過一段時間,觀測其他節點。
我們使用sqlplus 登陸會報錯誤。
使用conn sys/password@devdb2 as sysdba,報以下錯誤:
ERROR:
ORA-01075: you are currently logged on
2、以normal 身份的使用者連線(conn username/password@devdb2),報以下錯誤:
ERROR:
ORA-00604: 遞迴 SQL 級別 2 出現錯誤
ORA-01157: 無法標識/鎖定資料檔案 5 - 請參閱 DBWR 跟蹤檔案
ORA-01110: 資料檔案 5: '/u01/oracle/product/11.2.0/db_1/dbs/user01.dbf'
ORA-00604: 遞迴 SQL 級別 2 出現錯誤
ORA-01157: 無法標識/鎖定資料檔案 5 - 請參閱 DBWR 跟蹤檔案
ORA-01110: 資料檔案 5: '/u01/oracle/product/11.2.0/db_1/dbs/user01.dbf'


下面我採用rman 的方式,把/u01/oracle/product/11.2.0/db_1/dbs/user01.dbf資料檔案
遷移到ASM儲存上。
把資料庫啟動到mount狀態下
SQL> startup mount
ORACLE instance started.

Total System Global Area  393375744 bytes
Fixed Size                  1336764 bytes
Variable Size             276826692 bytes
Database Buffers          109051904 bytes
Redo Buffers                6160384 bytes
Database mounted.
使用rman連結資料庫


pxboracle->rman  target /

Recovery Manager: Release 11.2.0.1.0 - Production on Mon May 12 22:49:59 2014

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

connected to target database: DEVDB (DBID=260178701, not open)

RMAN> report schema;

using target database control file instead of recovery catalog
Report of database schema for database with db_unique_name ASMDEVDB

List of Permanent Datafiles
===========================
File Size(MB) Tablespace           RB segs Datafile Name
---- -------- -------------------- ------- ------------------------
1    700      SYSTEM               ***     +DATA/asmdevdb/datafile/system.273.845258673
2    600      SYSAUX               ***     +DATA/asmdevdb/datafile/sysaux.274.845258703
3    200      UNDOTBS1             ***     +DATA/asmdevdb/datafile/undotbs1.264.845258723
4    5        USERS                ***     +DATA/asmdevdb/datafile/users.271.845258761
5    10       USERS                ***     /u01/oracle/product/11.2.0/db_1/dbs/user01.dbf

List of Temporary Files
=======================
File Size(MB) Tablespace           Maxsize(MB) Tempfile Name
---- -------- -------------------- ----------- --------------------
1    20       TEMP                 32767       +DATA/asmdevdb/tempfile/temp.275.845258729

RMAN> backup as copy datafile 5 format '+DATA';

Starting backup at 12-MAY-14
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=138 device type=DISK
channel ORA_DISK_1: starting datafile copy
input datafile file number=00005 name=/u01/oracle/product/11.2.0/db_1/dbs/user01.dbf
output file name=+DATA/asmdevdb/datafile/users.266.847407067 tag=TAG20140512T225103 RECID=1 STAMP=847407068
channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:04
Finished backup at 12-MAY-14

RMAN> switch datafile '/u01/oracle/product/11.2.0/db_1/dbs/user01.dbf' to copy;

datafile 5 switched to datafile copy "+DATA/asmdevdb/datafile/users.266.847407067"

RMAN> alter database open;

database opened

RMAN> report schema;

Report of database schema for database with db_unique_name ASMDEVDB

List of Permanent Datafiles
===========================
File Size(MB) Tablespace           RB segs Datafile Name
---- -------- -------------------- ------- ------------------------
1    700      SYSTEM               ***     +DATA/asmdevdb/datafile/system.273.845258673
2    600      SYSAUX               ***     +DATA/asmdevdb/datafile/sysaux.274.845258703
3    200      UNDOTBS1             ***     +DATA/asmdevdb/datafile/undotbs1.264.845258723
4    5        USERS                ***     +DATA/asmdevdb/datafile/users.271.845258761
5    10       USERS                ***     +DATA/asmdevdb/datafile/users.266.847407067

List of Temporary Files
=======================
File Size(MB) Tablespace           Maxsize(MB) Tempfile Name
---- -------- -------------------- ----------- --------------------
1    20       TEMP                 32767       +DATA/asmdevdb/tempfile/temp.275.845258729

 

注意:
以後在新增資料檔案時,使用如下命令
alter tablespace users add datafile '+DATA' size 10m;
檔案的路徑要寫儲存路徑,不用寫檔名,ASM檔案的命名不同於普通檔案的命名,它的檔名一般不直接指定,由ASM系統自己生成,並且其管理方式是OMF。

SQL> conn / as sysdba
Connected.
SQL> alter tablespace users add datafile '+DATA' size 10m;

Tablespace altered.

SQL> select file_name from dba_data_files;

FILE_NAME
------------------------------------------------------------
+DATA/asmdevdb/datafile/system.273.845258673
+DATA/asmdevdb/datafile/sysaux.274.845258703
+DATA/asmdevdb/datafile/undotbs1.264.845258723
+DATA/asmdevdb/datafile/users.271.845258761
+DATA/asmdevdb/datafile/users.266.847407067
+DATA/asmdevdb/datafile/users.270.847408759

6 rows selected.


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2014.5.14 15:20
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