Oracle 擴充磁碟空間

環境：

OS:Oracle Linux Server release 6.3

DB:Oracle 11.2.0.4.0

問題：

根目錄磁碟空間不足，還剩6.5G

解決辦法：

擴容磁碟空間；

由於安裝作業系統時沒有使用LVM，不能直接擴容根目錄，並且磁碟上的資料庫相關檔案不能刪除；

可以新增新盤，並將資料庫檔案遷移到新盤上；

1 檢視資料庫相關檔案均在/u01目錄下

[root@cjc ~]# cat /home/oracle/.bash_profile

......

export ORACLE_BASE=/u01/app/oracle

export ORACLE_HOME=/u01/app/oracle/product/11.2.0/db_1

......

SQL> select file_name from dba_data_files;

FILE_NAME

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

/u01/app/oracle/oradata/dapuchai/users01.dbf

/u01/app/oracle/oradata/dapuchai/undotbs01.dbf

/u01/app/oracle/oradata/dapuchai/sysaux01.dbf

/u01/app/oracle/oradata/dapuchai/system01.dbf

/u01/app/oracle/oradata/dapuchai/cjc_tbs01a.dbf

/u01/app/oracle/oradata/dapuchai/ogg_tbs01.dbf

6 rows selected.

2 Linux 新增新分割槽

---關機新增100G磁碟，/dev/sdb

[root@dapuchai ~]# df -h

Filesystem Size Used Avail Use% Mounted on

/dev/sda3 28G 20G 6.5G 76% /

tmpfs 1004M 239M 765M 24% /dev/shm

/dev/sda1 194M 51M 134M 28% /boot

[root@cjc ~]# fdisk -l

Disk /dev/sda: 32.2 GB, 32212254720 bytes

255 heads, 63 sectors/track, 3916 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk identifier: 0x000ccbd2

Device Boot Start End Blocks Id System

/dev/sda1 * 1 26 204800 83 Linux

Partition 1 does not end on cylinder boundary.

/dev/sda2 26 287 2097152 82 Linux swap / Solaris

Partition 2 does not end on cylinder boundary.

/dev/sda3 287 3917 29154304 83 Linux

Disk /dev/sdb: 107.4 GB, 107374182400 bytes

255 heads, 63 sectors/track, 13054 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk identifier: 0x00000000

3 分割槽/dev/sdb1

[root@cjc ~]# fdisk /dev/sdb

Device contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabel

Building a new DOS disklabel with disk identifier 0xf58baf0e.

Changes will remain in memory only, until you decide to write them.

After that, of course, the previous content won't be recoverable.

Warning: invalid flag 0x0000 of partition table 4 will be corrected by w(rite)

WARNING: DOS-compatible mode is deprecated. It's strongly recommended to

switch off the mode (command 'c') and change display units to

sectors (command 'u').

Command (m for help): p ---檢視

Disk /dev/sdb: 107.4 GB, 107374182400 bytes

255 heads, 63 sectors/track, 13054 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk identifier: 0xf58baf0e

Device Boot Start End Blocks Id System

Command (m for help): n ---新增

Command action

e extended

p primary partition (1-4)

p

Partition number (1-4):

Value out of range.

Partition number (1-4): 1

First cylinder (1-13054, default 1):

Using default value 1

Last cylinder, +cylinders or +size{K,M,G} (1-13054, default 13054):

Using default value 13054

Command (m for help): p

Disk /dev/sdb: 107.4 GB, 107374182400 bytes

255 heads, 63 sectors/track, 13054 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk identifier: 0xf58baf0e

Device Boot Start End Blocks Id System

/dev/sdb1 1 13054 104856223+ 83 Linux

Command (m for help): w ---寫入儲存

The partition table has been altered!

Calling ioctl() to re-read partition table.

Syncing disks.

[root@cjc ~]# fdisk -l

Disk /dev/sda: 32.2 GB, 32212254720 bytes

255 heads, 63 sectors/track, 3916 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk identifier: 0x000ccbd2

Device Boot Start End Blocks Id System

/dev/sda1 * 1 26 204800 83 Linux

Partition 1 does not end on cylinder boundary.

/dev/sda2 26 287 2097152 82 Linux swap / Solaris

Partition 2 does not end on cylinder boundary.

/dev/sda3 287 3917 29154304 83 Linux

Disk /dev/sdb: 107.4 GB, 107374182400 bytes

255 heads, 63 sectors/track, 13054 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk identifier: 0xf58baf0e

Device Boot Start End Blocks Id System

/dev/sdb1 1 13054 104856223+ 83 Linux

4 格式化

[root@cjc ~]# mkfs -t ext4 /dev/sdb1

mke2fs 1.41.12 (17-May-2010)

Filesystem label=

OS type: Linux

Block size=4096 (log=2)

Fragment size=4096 (log=2)

Stride=0 blocks, Stripe width=0 blocks

6553600 inodes, 26214055 blocks

1310702 blocks (5.00%) reserved for the super user

First data block=0

Maximum filesystem blocks=4294967296

800 block groups

32768 blocks per group, 32768 fragments per group

8192 inodes per group

Superblock backups stored on blocks:

32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208,

4096000, 7962624, 11239424, 20480000, 23887872

Writing inode tables: done

Creating journal (32768 blocks): done

Writing superblocks and filesystem accounting information: done

This filesystem will be automatically checked every 21 mounts or

180 days, whichever comes first. Use tune2fs -c or -i to override.

5 掛載

[root@cjc ~]# mkdir /u02

[root@cjc ~]# mount /dev/sdb1 /u02

[root@cjc ~]# df -h

Filesystem Size Used Avail Use% Mounted on

/dev/sda3 28G 20G 6.5G 76% /

tmpfs 1004M 88K 1004M 1% /dev/shm

/dev/sda1 194M 51M 134M 28% /boot

/dev/sdb1 99G 188M 94G 1% /u02

6 遷移/u01到新加的盤

[root@cjc ~]# mv /u01 /u03

[root@cjc ~]# mv /u02 /u01

mv: cannot move `/u02' to `/u01': Device or resource busy

[root@cjc ~]# umount /u02

[root@cjc ~]# mv /u02 /u01

[root@cjc ~]# mount /dev/sdb1 /u01

[root@cjc ~]# mv /u03/* /u01

[root@cjc ~]# df -h

Filesystem Size Used Avail Use% Mounted on

/dev/sda3 28G 14G 13G 54% /

tmpfs 1004M 88K 1004M 1% /dev/shm

/dev/sda1 194M 51M 134M 28% /boot

/dev/sdb1 99G 6.0G 88G 7% /u01

[root@cjc /]# lsblk

NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT

sr0 11:0 1 1024M 0 rom

sr1 11:1 1 1024M 0 rom

sda 8:0 0 30G 0 disk

├─sda1 8:1 0 200M 0 part /boot

├─sda2 8:2 0 2G 0 part [SWAP]

└─sda3 8:3 0 27.8G 0 part /

sdb 8:16 0 100G 0 disk

└─sdb1 8:17 0 100G 0 part /u01

7 新增自動掛載

[root@cjc ~]# vi /etc/fstab

......

/dev/sdb1 /u01 ext4 defaults 0 0

8 啟動資料庫

[root@cjc ~]# su - oracle

[oracle@cjc ~]$ lsnrctl start

[oracle@cjc ~]$ sqlplus / as sysdba

SQL*Plus: Release 11.2.0.4.0 Production on Sat Jan 11 15:00:47 2020

Connected to an idle instance.

SQL> startup

ORACLE instance started.

Total System Global Area 839282688 bytes

Fixed Size 2257880 bytes

Variable Size 541068328 bytes

Database Buffers 289406976 bytes

Redo Buffers 6549504 bytes

Database mounted.

Database opened.

SQL> conn cjc

Enter password:

Connected.

SQL> select count(*) from t1;

COUNT(*)

----------

1

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Oracle 擴充磁碟空間

Oracle 擴充磁碟空間

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