Oracle 扩充磁盘空间

环境：

OS:Oracle Linux Server release 6.3

DB:Oracle 11.2.0.4.0

问题：

根目录磁盘空间不足，还剩6.5G

解决办法：

扩容磁盘空间；

由于安装操作系统时没有使用LVM，不能直接扩容根目录，并且磁盘上的数据库相关文件不能删除；

可以添加新盘，并将数据库文件迁移到新盘上；

1 查看数据库相关文件均在/u01目录下

[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 添加新分区

---关机添加100G磁盘，/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 分区/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 ---写入 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 挂载

[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 迁移/u01到新加的盘

[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 添加自动挂载

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

......

/dev/sdb1               /u01                    ext4    defaults        0 0

8 启动数据库

[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

欢迎关注我的微信公众号"IT小Chen"，共同学习，共同成长！！！