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A bare device, also called a raw partition, is a special character device that is not formatted and read by unix through a file system. It is read and written by the application. Buffer through the file system. Because the bare device does not pass through the unix operating system, data is transmitted directly from disk to Oracle. Therefore, the bare device is used for database applications with frequent reads and writes, it can greatly improve the p

Introduction to the long raw blob clob type in Oracle, blobclob Note: RAW: unprocessed type, which can store binary data or byte charactersLONG: variable-length string data. The maximum length is 2 GB. LONG has the VARCHAR2 column feature. It can store at most one LONG column in a table in LONG text. [not recommended]Long raw: variable-length binary data, up to

In the build process of the Linux platform Oracle RAC, if you use Asm+raw storage, because ASM does not support block devices and supports character access devices, you need to configure the conversion of block device drive to character device How drive is accessed.But in the Linux platform, unlike Aix and HP-UX, the default is to provide a block device corresponding to the character device file, we need to manually map the block device as a character

Label:Description Raw: Unprocessed type, can store binary data or byte charactersLong: variable long string data, longest 2g,long has VARCHAR2 column attributes, can store long text in one table up to a long column "not recommended"Long RAW: variable Long binary data, up to 2G "not recommended"CLOB: Character large object CLOB used to store single-byte character data; Large text, such as XML data.NCLOB: Use

sensor signal Output YUV, RGB, RAW DATA, JPEG 4 different waysCategory: Camera 2012-12-17 08:59 10085 people read reviews (5) Favorite reports In simple terms,Yuv:luma (Y) + chroma (UV) format, typically sensor supports YUV422 format, that is, the data format is output in y-u-y-v orderRGB: Traditional red-green-blue format, such as RGB565, whose 16-bit data format is 5-bit R + 6-bit G + 5-bit B. G more than one, because the human eye is more sensitive

┌ ── ─ Raw Driver (/dev/raw/rawn)│ Config_raw_driver:│ The raw driver permits Block devices to be bound to/dev/raw/rawn.│ Once bound, I/O against/dev/raw/rawn uses efficient zero-copy I/O.│ See the raw (8) manpage for more details

Panorama Synthetic Distortion control is more excellent than PS Camera Raw is the most familiar with the raw file processing tools, with recent updates, Camera raw function more and more rich, in addition to the original regulation of content, Camera raw adjustment independence is also more and more strong, some

1, what is the bare Linux device? Character devices? Block device? Bare devices: Also known as bare partitions (raw partitions), is a special character device that is not formatted and is not read by Unix/linux through a file system. A raw device can bind a partition, or it can bind a disk. Character devices: Reading and writing to character devices does not require buffer through the OS. It cannot be mou

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RAW-format tablespace Resizing in data. The procedure is as follows:View existing bare devices # cd/dev/raw # ls-rtlCheck the raw device size/View previous lvSize # blockdev -- getsize/dev/raw/raw3720488192 # blockdev -- getsize/dev/raw/raw3820488192 # blockdev -- getsize/de

1. Partition the diskFdisk-l view disk statusFdisk/dev/SDB partitioning 2. Configure bare devices (modify the/etc/udev/rules. d/60-raw.rules file)In redhat51) Load bare DevicesAction = "add", kernel = "/dev/sdb1", run + = "/bin/raw/dev/raw/raw1% N"-accumulate multiple times2) Set raw device users and permissionsAction = "add", kernel = "

SUSE Linux 10 configuration bare Device (raw devices)A bare device is a special character device that is not formatted with a partition or disk, or is called a bare partition (the original partition) that is not read by UNIX through the file system. It is the responsibility of the application to read and write to it. A device that is not managed directly by the operating system without buffering the file system. I/O is more efficient due to cross-oper

Raw is a digital camera special format, can be called "electronic film", is the original image encoding data. Raw format photos record the digital camera sensor raw information and some of the data generated by the camera, including the image of sharpness, saturation, contrast, color and white balance of the various information.

The raw type is a data type that is used in Oracle to hold a bit string, similar to char, declared with a raw (L) method, up to 32767 bytes long. The system provides a SYS.UTL_RAW toolkit for raw type operations, and the commonly used functions are as follows: 1, the length of the calculation function, get a RAW type v

habits The acceptance procedure defines the responsibilities and methods of the Acceptance Work, and standardizes the acceptance work. At the same time, acceptance is carried out according to procedures, and good habits are maintained, which guarantees the high efficiency of acceptance. (4) regular supervision and inspection Management Personnel of catering enterprises should inspect and accept the goods from time to time, review the weight, quantity and quality of the goods, and make the accep

Image files used by QEMU: qcow2 and raw This article introduces qcow2 and raw, both of which are disk file formats used by QEMU (KVM) virtual machines. This article will compare and analyze their implementation principles, support features, and read/write efficiency, finally, we will introduce how to convert Disk Files in these two formats.Basic Principles of qcow2 The qcow2 image format is a disk image sup

1) What is a raw table? What is it? Iptables has five links: prerouting, input, forward, output, postrouting, and four tables: filter, Nat, mangle, raw. The priority of the four tables ranges from high to low: raw --> mangle --> Nat --> Filter For example, if there is a mangle table or NAT table on the prrouting chain, mangle will process the table first and then

Currently, digital cameras are stored in the same format as JPEG and Tiff, as well as raw. What kind of format is raw? Under what circumstances should I use this raw format? What are the advantages and disadvantages? In fact, raw is not an image format and cannot be edited directly.

Before creating a virtual machine, first add a virtual machine disk, use image in KVM to represent the virtual disk, and before adding the virtual machine diskFirst you need to know how to make an imageQEMU-IMG is a Disk management tool for QEMUOne, image creation in RAW format1. Create an image in raw format with a capacity of 20gQemu-img create-f Raw Ubuntu14.0

the SAP threshold (including the latest PA Chinese) package Follow-up update service! 3, send Lenovo, a home appliance, a chemical, a food and other industry project documents to give Lenovo, a chemical, a grain and other projects complete implementation of the document.From Project launch, research to blueprint design, development of spec testing, process simulation, data upload and other raw files. Each