This article focuses on using the gparted tool in Ubuntu to resize or merge partitions. This mainly applies to scenarios where a partition is insufficient. There is no big problem in narrowing down a partition. Partitioning is the first step to install the operating system, but before the operating system, it is difficult for us to clearly know which partitions need much space, even if we get some reminders
LVM is short for logical disk volume Management (LogicalVolumeManager). It is a mechanism for managing disk partitions in Linux. LVM is a logical layer built on hard disks and partitions, to improve the flexibility of disk partition management. The LVM system administrator can easily manage disk partitions. For example, you can connect several disk
We often use the Ghost Software to back up a file with the extension. when a Windows system encounters an accident, The gho file is restored by using the "from image to partition" of the ghost. This saves time and effort to reinstall the operating system.
However, when you use the "from image to partition" function to restore the system, you must select the correct option. Otherwise, unexpected consequences will occur! I have encountered a hard disk with a similar fault. The hard disk fault
Oracle 11g maintenance partition (2) -- Coalescing Partitions
Integrated Partition
Converged partitioning is a method to reduce the number of partitions in a hash partition table or index. It can also be used to reduce the number of subpartitions in a composite hash partition table. When a hash partition is merged, its content is re-allocated to one or more other partit
Before introducing Linux partitions and mount points, I would like to introduce a Windows example, which is familiar to all Windows users. I will use this example to illustrate what Linux partitions and mount points are.
1. deleted partitions
In WinPE, I divide a hard disk into a primary partition and four logical partitions
. For example, for the first IDE device, Linux is defined as hda; for the second IDE device, hdb; and so on. The SCSI devices should be sda, sdb, and sdc.
2. Number of partitions
To partition, you must operate on each hardware device. This may be an IDE hard disk or a SCSI hard disk. For each hard disk (IDE or SCSI) device, Linux assigns a serial number ranging from 1 to 16, which indicates the Partition Number on the hard disk. For example, the
noreverse to re-create the reverse key index as the standard index, but you cannot re-create the Standard Index as the reverse key index.Alter index rev_index rebuild noreverse;
2.4 bitmap index:The data volume in the table is large, but the unique value of the table is small. Bitmap indexes use bitmaps for each key value instead of the rowid list.Create bitmap index bit_emp on EMP (sex );
2.5. index the Organizational table
2.6 function-based indexes
2.7.
(addressable) by a hard drive, and all information stored by the hard drive is recorded in sectors.
Elephant cut cake
1.4 Track1.5 Block2. representation of disks in Linux
2.1 All Linux devices are abstracted as a file and saved in the/dev/directory.
2.2 disks are divided into (IDE, SATA, SAS, SCSI, and USB) by interface)
2.2.1 The IDE disk name is generally: hd [a-z], and [a-z] indicates the disk number;
2.2.2 SATA disks, SAS hard disks, SCSI hard disks, and USB disks are generally named sd [a
Oracle partitions tables during data warehouse construction, there is often a large amount of data. In a short period of time, the data volume in the table is limited, and the query performance is still acceptable. However, as time passes, the data volume in the table increases rapidly, the query speed will slow down and the performance will drop. In this case, we need to consider partitioning the table. 1. oracle
1. Supports NTFS partitions
If your Windows partition is formatted with NTFS, you can do this by compiling the kernel in order to enable Linux to support NTFS, but the easiest way is to install the NTFS-enabled RPM package.
Right-click and select here to open the terminal in the shortcut menu. Enter UNAME-A in the terminal to view the kernel version, download the corresponding kernel rpm, my rh9 is kernel-ntfs-2.4.20-8.i686.rpm. Enter in the termi
/warehouse/partition_test/stat_date=20110728/province= Zhejiang
Each partition will have a separate folder, and the following are all the data files for that partition. In this example stat_date is the main level, province is the sub-level, all stat_date= ' 20110728 ', and province different partitions will be in/user/hive/warehouse/partition_test/ stat_date=20110728 below, and stat_date different partitions
After more than four years of ThinkPad suddenly broken, bite teeth, bought a MacBook, use down the feeling is handsome, do not want to go back to Windows. However, there is no substitute for Visual Studio under the Mac, and only one more Windows 8 can be installed.
Windows 8 was installed with boot camp, but only one zone was divided for Windows 8. Later, trying to pull a partition out of the data, and then in Windows 8, "Disk Management" in the contraction (Shrink) c disk, pulled out a part of
it should be /dev/hdb6 , primary partition 1 ~ 4 , which must be reserved. Therefore, your extended partition should start with hdb5 !
Ide1The1Hard Disks (Master)/Dev/hdaIde1The2Hard Disks (Slave)/Dev/HDBIde2The1Hard Disks (Master)/Dev/HDCIde2The2Hard Disks (Slave)/Dev/HDDSCSIThe1Hard Disks/Dev/SDASCSIThe2Hard Disks/Dev/SDB
That is, the first hard disk, calledMaster,
The second hard disk is calledSlave
Ide1 The 1 Hard Disks ( Master ) 1 Primary
Problem Overview
Oracle Advanced Supply Chain Planning has a problem with the initial setup responsibilities. I don't know if I want to install patches or other configurations ,,This prompt, but I found that there are still available partitions, and the logical relationships in the partitions are a bit messy.
Solution
Cause: Due to ORA-02149: the specified partition does not existORA-06512: In "SYSTEM. AD_D
;)If your Windows 98 directory contains a Chinese file name, after mounting the file with the above command, a bunch of garbled characters are displayed. This requires the codePage iocharset option in the-O parameter. CodePage specifies the code page of the file system. The Chinese code in simplified Chinese is 936. iocharset specifies the character set. cp936 or gb2312 is generally used for simplified Chinese.
When the mounted file system is not supported by Linux, Mount must report an error, f
From Https://databricks.gitbooks.io/databricks-spark-knowledge-base/content/performance_optimization/how_many_ Partitions_does_an_rdd_have.htmlFor tuning and troubleshooting, it's often necessary to know what many paritions an RDD represents. There is a few ways to find this information:View Task execution against partitions Using the UIWhen a stage is executes, you can see the number of partitions for a gi
Many users encounter problems when installing Windows 7. The installer creates primary partitions without any options for creating logical partitions, in this case, the remaining space cannot be allocated after four primary partitions are created, which makes many users feel embarrassed. Some users use third-party software to assist in partitioning, but in fact,
Disk
All Linux devices are abstracted into a file that is stored in the/dev directory.
The device name is generally hd[a-z] or sd[a-z]. If you have more than one hard drive in your computer, the device name is SDA, ADB, SDC ... And so on
The name of the IDE device is hd[a-z]. The names of SATA, SCSI, SAS, USB, and other devices are called sd[a-z].
PartitionIn Linux, partitions are represented by using the name + partition number,
In many cases we may need to create new partitions when using Linux to help us learn and work better, and then I'll go over how to use the FDISK command partition. Linux partitions differ from Windows, and the Linux partition is divided into three types of primary partition extension partitions and logical partitions.
With pre-installed Win8 computers flocking to the market, the standard combination of UEFI+GPT has received a wider range of attention. Uefi+gpt is undoubtedly the future trend, so it is necessary to first understand the role of some special partitions on the disk that is used to boot Windows's GPT partitioning structure.
Partition created by default by using Windows Installer
When we install WINDOWS8/7 in GPT and use Windows Installer to repartitio
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