Oracle11g moves the database to different ASM disk groups/modifies the redundancy attribute of the ASM disk groups

Last Update:2018-07-10 Source: Internet

Author: User

Developer on Alibaba Coud: Build your first app with APIs, SDKs, and tutorials on the Alibaba Cloud. Read more ＞

ORACLE uses the ASM storage. When creating a database, the redundant attribute of the disk group uses EXTERN. To change the disk group to NORMAL, perform the following steps:

1. Create a new disk group with the expected attributes

[Root @ Oracle-LAB ~] # Su-grid

[Grid @ Oracle-LAB ~] $ Asmca

Or run the following command:

[Grid @ Oracle-LAB ~] $ Sqlplus/as sysasm

SQL> CREATE DISKGROUP DATA NORMAL REDUNDANCY DISK '/dev/raw/raw1 'size 5120 mdisk'/dev/raw/raw2 'size 5120 mdisk'/dev/raw/raw3' SIZE 5120 M;

2. Check the disk group

[Grid @ Oracle-LAB ~] $ Sqlplus/as sysasm

SQL> select state, name, type from v $ asm_diskgroup;

STATE NAME TYPE

-----------------------------------------------

MOUNTED DATA EXTERN

MOUNTED FRA EXTERN

MOUNTED DATA01 NORMAL

3. Back up existing databases

[Oracle @ Oracle-LAB ~] $ Sqlplus/nolog

SQL> conn/as sysdba

SQL> show parameter db_name

NAME TYPE VALUE

------------------------------------------

Db_name string ORCL

SQL> show parameter control

NAME TYPE VALUE

-----------------------------------------------------------------------------

Control_file_record_keep_time integer 7

Control_files string + DATA/orcl/controlfile/current

. 260.833734379

Control_management_pack_access string DIAGNOSTIC + TUNING

There are two ways to generate a new control file in a new disk group (recommended method 2 ):

Method 1: generate a backup of an existing control file:

Back up control files to new disk groups

SQL> alter database backup controlfile to '+ DATA01 ';

Database altered.

View the backup control file:

[Root @ Oracle-LABsoftware] # su-grid

[Grid @ Oracle-LAB ~] $ Asmcmd

ASMCMD> ls + DATA01/ORCL/CONTROLFILE/

Backup.256.833381229

Set initialization parameters:

SQL> alter system setcontrol_files = '+ DATA01/ORCL/CONTROLFILE/Backup.256.833381229' scope = spfile;

System altered.

[Oracle @ Oracle-LAB ~] $ Rman target/

Using targetdatabase control file instead of recovery catalog

Database closed

Databasedismounted

Oracle instance shut down

RMAN> startup nomount

Connected totarget database (not started)

Oracle instancestarted

Total SystemGlobal Area 1653518336 bytes

Fixed Size 2228904 bytes

VariableSize 973081944 bytes

DatabaseBuffers 671088640 bytes

Redo Buffers 7118848 bytes

Generate an existing control file from the original control file:

RMAN> restore controlfile from '+ DATA/orcl/controlfile/current.259.833372337 ';

Starting restoreat 05-DEC-13

Allocatedchannel: ORA_DISK_1

ChannelORA_DISK_1: SID = 13 device type = DISK

ChannelORA_DISK_1: copied control file copy

Output file name = + DATA01/orcl/controlfile/backup.256.833381229

Finished restore at 05-DEC-13

Method 2: Use the following method to add a control file:

SQL> alter system set control_files = '+ DATA/orcl/controlfile/current.260.833734379', '+ DATA01' scope = spfile;

System altered.

SQL> shutdown immediate

Database closed.

Database dismounted.

ORACLE instanceshut down.

SQL> startup nomount

ORACLE instance started.

Total System Global Area 1653518336 bytes

Fixed Size 2228904 bytes

Variable Size 973081944 bytes

Database Buffers 671088640 bytes

Redo Buffers 7118848 bytes

SQL> quit

[Oracle @ Oracle-LAB ~] $ Rman target/

RMAN> restore controlfile from '+ DATA/orcl/controlfile/current.260.833734379 ';

Starting restore at 09-DEC-13

Using target database control file instead of recoverycatalog

Allocated channel: ORA_DISK_1

Channel ORA_DISK_1: SID = 135 device type = DISK

Channel ORA_DISK_1: copied control file copy

Output file name = + DATA/orcl/controlfile/current.260.833734379

Output filename = + DATA01/orcl/controlfile/current.256.833744103

Finished restore at 09-DEC-13

RMAN> quit

Recovery Manager complete.

[Oracle @ Oracle-LAB ~] $ Sqlplus/nolog

SQL> conn/as sysdba

Connected.

SQL> alter database mount;

Database altered.

SQL> alter database open;

Database altered.

SQL> show parameter control;

NAME TYPE VALUE

-----------------------------------------------------------------------------

Control_file_record_keep_time integer 7

Control_files string + DATA/orcl/controlfile/current

. 260.833734379, + DATA01/orcl/c

Ontrolfile/current.256.833744103

Control_management_pack_access string DIAGNOSTIC + TUNING

SQL> alter system setcontrol_files = '+ DATA01/orcl/controlfile/current.256.833744103' scope = spfile;

System altered.

SQL> shutdown immediate

Database closed.

Database dismounted.

ORACLE instance shut down.

SQL> startup

ORACLE instance started.

Total System Global Area 1653518336 bytes

Fixed Size 2228904 bytes

Variable Size 973081944 bytes

Database Buffers 671088640 bytes

Redo Buffers 7118848 bytes

Database mounted.

Database opened.

SQL> show parameter control;

NAME TYPE VALUE

-----------------------------------------------------------------------------

Control_file_record_keep_time integer 7

Control_files string + DATA01/orcl/controlfile/curre

Nt.256.833744103

Control_management_pack_access string DIAGNOSTIC + TUNING

RMAN> shutdown immediate

RMAN> startup nomount

RMAN> alter database mount;

Database mounted

Released channel: ORA_DISK_1

RMAN> backup as copy database format '+ DATA01 ';

Starting backupat 05-DEC-13

Allocatedchannel: ORA_DISK_1

ChannelORA_DISK_1: SID = 13 device type = DISK