用裸设备扩展oracle表空间

服务器：IBM P6小型机

操作系统： AIX5.3

DB：Oracle 10g

 

现有表空间users，提示表空间不足。

1.查询表空间已使用的裸设备文件名称

执行如下sql：

select * from  DBA_DATA_FILES
where tablespace_name = 'USERS'

结果：

FILE_NAME FILE_ID TABLESPACE_NAME BYTES
/dev/rlvusers01 5 USERS 17179607040
/dev/rlvusers02 6 USERS 17179860992
/dev/rlvusers03 7 USERS 17179860992
/dev/rlvusers04 9 USERS 17179860992

2.查询裸设备所在的vg

[P6:51:oracle]/home/oracle>lsvg -l datavg
datavg:
LV NAME             TYPE       LPs     PPs     PVs  LV STATE      MOUNT POINT
lvusers01           raw        64      64      1    open/syncd    N/A
lvusers02           raw        64      64      1    open/syncd    N/A
lvusers03           raw        64      64      1    open/syncd    N/A
lvusers04           raw        64      64      1    open/syncd    N/A

 

3.查看裸设备lv的详细信息

[P6:51:oracle]/home/oracle>lslv  lvusers04
LOGICAL VOLUME:     lvusers04              VOLUME GROUP:   datavg
LV IDENTIFIER:      00c4cf1400004c00000001216d90213b.24 PERMISSION:     read/write
VG STATE:           active/complete        LV STATE:       opened/syncd
TYPE:               raw                    WRITE VERIFY:   off
MAX LPs:            512                    PP SIZE:        256 megabyte(s)
COPIES:             1                      SCHED POLICY:   parallel
LPs:                64                     PPs:            64
STALE PPs:          0                      BB POLICY:      relocatable
INTER-POLICY:       minimum                RELOCATABLE:    no
INTRA-POLICY:       middle                 UPPER BOUND:    128
MOUNT POINT:        N/A                    LABEL:          None
MIRROR WRITE CONSISTENCY: off                                    
EACH LP COPY ON A SEPARATE PV ?: no                                     
Serialize IO ?:     NO                                     
DEVICESUBTYPE : DS_LVZ

 

注意LPS：64，VG：datavg，PP size：256M

所以lvusers04的大小 = 64*256M= 16G

 

4.查看vg空闲空间是否够

[P6:51:oracle]/dev>lsvg datavg
VOLUME GROUP:       datavg                   VG IDENTIFIER:  00c4cf1400004c00000001216d90213b
VG STATE:           active                   PP SIZE:        256 megabyte(s)
VG PERMISSION:      read/write               TOTAL PPs:      1209 (309504 megabytes)
MAX LVs:            512                      FREE PPs:       495 (126720 megabytes)
LVs:                27                       USED PPs:       714 (182784 megabytes)
OPEN LVs:           26                       QUORUM:         1 (Disabled)
TOTAL PVs:          3                        VG DESCRIPTORS: 3
STALE PVs:          0                        STALE PPs:      0
ACTIVE PVs:         3                        AUTO ON:        no
Concurrent:         Enhanced-Capable         Auto-Concurrent: Disabled
VG Mode:            Concurrent                               
Node ID:            -                        Active Nodes:    
MAX PPs per VG:     130048                                    
MAX PPs per PV:     1016                     MAX PVs:        128
LTG size (Dynamic): 1024 kilobyte(s)         AUTO SYNC:      no
HOT SPARE:          no                       BB POLICY:      relocatable

注意Free PPs:126720M，约120G

 

5.新建裸设备LV（使用root登陆）

#mklv -y 'lvusers05' -t 'raw' datavg 64  

 

6.更改裸设备所属owner

#chown oracle:dba /dev/rlvusers05

 

*这里尤其要注意一点，如果oracle使用了RAC的话，必须每个节点都执行上述语句。

***

而且经过测试发现，增加之后，必须更新hacmp（因为增加的lv只有在1节点上有，2节点并没有），所以要重启hacmp并更新hacmp信息。

重启后lv的owner可能会恢复成root，需要手动重置下。

***

 

7.在ORACLE扩展表空间

sql<

ALTER tablespace users add DATAFILE '/dev/rlvusers05' SIZE 16000M AUTOEXTEND OFF;

注意 size是160000M，而不是直接16G，因为不能用满，得留点空间。

 

8.查看裸设备lv状态

[P6:51:oracle]/dev>lslv lvusers05
LOGICAL VOLUME:     lvusers05              VOLUME GROUP:   datavg
LV IDENTIFIER:      00c4cf1400004c00000001216d90213b.26 PERMISSION:     read/write
VG STATE:           active/complete        LV STATE:       opened/syncd
TYPE:               raw                    WRITE VERIFY:   off
MAX LPs:            512                    PP SIZE:        256 megabyte(s)
COPIES:             1                      SCHED POLICY:   parallel
LPs:                64                     PPs:            64
STALE PPs:          0                      BB POLICY:      relocatable
INTER-POLICY:       minimum                RELOCATABLE:    yes
INTRA-POLICY:       middle                 UPPER BOUND:    128
MOUNT POINT:        N/A                    LABEL:          None
MIRROR WRITE CONSISTENCY: on/ACTIVE                              
EACH LP COPY ON A SEPARATE PV ?: yes                                    
Serialize IO ?:     NO 

 

注意状态变成:opened/syncd

 

到此工作结束

 

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