Oracle 擴充磁盤空間

環(huán)境：

OS:Oracle Linux Server release 6.3

DB:Oracle 11.2.0.4.0

問題：

根目錄磁盤空間不足，還剩6.5G

解決辦法：

擴容磁盤空間；

由于安裝操作系統(tǒng)時沒有使用LVM，不能直接擴容根目錄，并且磁盤上的數(shù)據(jù)庫相關文件不能刪除；

可以添加新盤，并將數(shù)據(jù)庫文件遷移到新盤上；

1 查看數(shù)據(jù)庫相關文件均在/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 添加新分區(qū)

---關機添加100G磁盤，/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 分區(qū)/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 ---查看

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 保存

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 添加自動掛載

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

......

/dev/sdb1? ? ? ? ? ? ? ?/u01? ? ? ? ? ? ? ? ? ? ext4? ? defaults? ? ? ? 0 0

8 啟動數(shù)據(jù)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

Copyright (c) 1982, 2013, Oracle.? All rights reserved.

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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