space usage

Test environment:Server: X86 pcserver total 6 unitsCPU: Single 8-coreMemory: 64GDisk: RAID 10Operating system: CentOS 6.5mongodb:3.0Java Driver: 2.13.0jdk:1.6Network: Gigabit EthernetTest One:Single Monodb service, one with configuration server as a

I used to pursue new things, and found the foundation is the most important, this year's main goal is to master SQL query and SQL performance optimization.This series of "T-SQL Fundamentals" is primarily a summary of the T-SQL Foundation."T-SQL

IntroductionThe transaction log in SQL Server is undoubtedly one of the most important parts of SQL Server. Because SQL Server uses transaction logs to ensure persistence (durability) and transaction rollback (Rollback). This also partially ensures

4.1 DF CommandDf,report file system disk space usage reports the usage of the FileSystem disks;DF command format: DF [option]Df-a:all displays disk usage for all file systems, including 0 blocks of file systems.Df-h:human readable output file system

The function of the DF command in Linux is to check the disk space usage of the Linux server's file system . You can use this command to get information about how much space the hard disk is taking up, and how much space is left.1. Command format:DF

BG and FGLinux/unix the biggest advantage of the Microsoft platform is the real multi-user, multi-tasking. Therefore, in the task management also has the characteristic management thought.We know that on Windows, we either have a program running in

-------------------------------Linux Directory-------------------------------/: root directory, only directory under the general root directory, under Linux there is only one root directory. Everything starts here. When you enter "/home" in the

The function of the DF command in Inux is used to check the disk space usage of the Linux server's file system. You can use this command to get information about how much space the hard disk is taking up, and how much space is left.1. Command

The system table space usage is 85%, and the aud$ table used to record audit records takes up a lot of space.After the backup truncate off aud$, the problem is temporarily resolved. Remember oracle11.2 can move aud$ to normal table emptyRoom So I

Spatial information for file systemsDF CommandDfcommand provides a single-line summary,a row shows the used and available space for a loaded system of asking the price.the unit depends on the system,some use blocks,some of them areKB.Most modern

IntroducedThe file system operations in this section are simple enough to contain a few parameters for several commands, but mastering them will also help you in the process of learning the rest of the content. Because this course is

Brief introductionA file system is a logical collection of all the files on a partition or disk.The file system contains not only the data in the file but also the structure of the file system , in which all Linux users and programs see files,

Brief introductionA file system is a logical collection of all the files on a partition or disk.The file system contains not only the data in the file but also the structure of the file system , in which all Linux users and programs see files,

For file commands, we discuss some fairly simple and intuitive management commands here. It only describes the functionality of other, more complex commands, so that when you need to use them, you know that they exist and what they use. This article

Linux File Typesuse ls-lh to see the type of a file,- representative is normal file D for directory directory blueBlock device Files character b c stands for character deviceBare Equipment represents no file system or bypasses the file system.Linux

OverviewWhen we perform fault location and performance analysis, we can use Java dump (also called Dump file) to help troubleshoot problems, which record memory usage and thread execution during JVM runs. The heap dump file is a binary format that

The Jstat command usesThe Jstat command can see how much of the heap memory is being used, and how many classes are loaded. The format of the command is as follows:Jstat [-Command options] [Vmid] [interval time/MS] [query count]Note: The JDK version

SQL1: Copy Code code as follows: --1, viewing the name and size of the table space SELECT T.tablespace_name, round (SUM (Bytes/1024 * 1024)), 0 ts_size From Dba_tablespaces T, Dba_data_files D WHERE T.tablespace_name =

Important directories under Linux/proc,/sys,/selinux,/bin,/usr/lib,/usr/local,/var,/tmp(1)/proc: Special file directory. This directory uses a special file format (proc format), which the kernel supports. This includes all of the virtual files. They

1. Overview First of all, we want to make some preliminary understanding of the basic concept of hard disk partition, the partition of hard disk mainly divides into basic partition (primarypartion) and extended partition (Extension partion) Two