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Oracle扩充磁盘空间的方法是什么

发表于:2024-11-13 作者:千家信息网编辑
千家信息网最后更新 2024年11月13日,本篇内容介绍了"Oracle扩充磁盘空间的方法是什么"的有关知识,在实际案例的操作过程中,不少人都会遇到这样的困境,接下来就让小编带领大家学习一下如何处理这些情况吧!希望大家仔细阅读,能够学有所成!O
千家信息网最后更新 2024年11月13日Oracle扩充磁盘空间的方法是什么

本篇内容介绍了"Oracle扩充磁盘空间的方法是什么"的有关知识,在实际案例的操作过程中,不少人都会遇到这样的困境,接下来就让小编带领大家学习一下如何处理这些情况吧!希望大家仔细阅读,能够学有所成!

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(*)

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