shared memory segment

I. Preface 1) the LinuxProc file system is optimized by adjusting the Proc file system. 2) Linux performance diagnostic tool: describes how to use the diagnostic tool provided by Linux for performance diagnosis. Bold italics indicate commands that

Relationship between sga_target and shmmaxReference Original:Relationship between sga_target and shmmax (Document ID 1527109.1)Applicable:Oracle Database-Enterprise Edition-version 10.1.0.2 to 11.2.0.3 [release 10.1 to 11.2]Information in this

Five, Oracle performance optimization under Linux Optimization of Oracle Database memory parameters Oracle-related system kernel parametersSGA, PGA parameter settings  Oracle down-disk storage performance Optimization file System Selection (EXT2/EXT3

If Nginx and other web or other to face high concurrency server, it is important to adjust the file handle and other kernel parts. File handle modified/etc/security/limits.conf,Add *-Nofile 65535Then create a new connection to view it with

Quick Guide for the impatient Getting Started Guide Using shared memory as a pool of unnamed memory blocks Creating named shared memory Objects Using an offset smart pointer For GKFX memory Creating vectors in shared memory Creating maps in shared

Problem Description:In a RAC environment, you want to turn on the archive log, which usesSQL> alter system setcluster_database=falsescope=spfile;-->把集群修改为单实例Modify the master node and restore the two nodes of the cluster.SQL> alter system setcluster_

Oracle optimization of database memory parametersØ Oracle -related system kernel parameters Ø SGA,PGA parameter setting Oracle lower disk storage performance OptimizationØ File System selection (ext2/ext3,xfs,ocfs2) Ø Oracle ASM storage 1. What

Tag:linux    kernel     cat > /etc/sysctl.conf Net.ipv4.ip_forward = 0 means to turn on the routing function, 0 is off, 1 is onnet.ipv4.conf.all.rp_filter=1 is "tell" kernel enhanced inbound filtering (ingress filtering) and outbound filtering

    oracle9i Installation     It took the Monday and Tuesday two days to finally install Oracle, and here is the steps for later reference.     installs Oracle9i (oracle9201) on Rh9 (2.4.20-8).     1 in the RH installation process should be

First, the preface This document aims at the OOP8 production environment, the specific optimization strategy needs to adjust according to the actual situation; This document describes how to optimize performance for Redhat Enterprise Linux in the

Readhat installing 11GR2 documentationNote: 1, Firewall,2, SElinux must be turned off. The root user runs the Setup command to turn off the firewall and SElinux To modify the network configuration file, you must restart this file to take

20155301 Tengshu Linux Foundation--linux interprocess Communication (IPC) mechanism summary shared memory Shared memory is a process of communication between multiple processes that share memory areas, a special range of addresses created

I. Preface1) Linux Proc file system, through Proc file system adjustment, to achieve performance optimization.2) Linux performance diagnostic tool: describes how to use the diagnostic tool provided by Linux for performance diagnosis.Bold italics

Installing oracle10 using SUSELinux and troubleshooting I have summarized my experience in installing oracle10g on Redhat5.5 and SUSE10.1. When SUSE10 is installed with OraRun, the oracle user, oinstall group, and dba group will be automatically

After a week of hard work, I finally completed the Fedora 16 X86_64 system on the new machine. Compared with the Fedora 14 in this book, the current Fedora version feels more beautiful and stable, but it is not a habit to use it. For more

Oracle users have relatively large permissions. Therefore, you may need to use non-oracle users to manage related databases. In particular, it is necessary for multiple individuals to add different users to the system or database, and then add these

Shared memory allows multiple processes to access the same memory space. It is the fastest available IPC format. It is designed to reduce the running efficiency of other communication mechanisms. It is often used in conjunction with other

Installing Oracle 10 Gb in SUSE Linux and troubleshooting I have summarized my experience in installing Oracle 10 GB on RedHat5.5 and SUSE Linux 10.1. When SUSE10 is installed with OraRun, the oracle user, oinstall group, and dba group will be

Shared memoryShared memory is primarily used to enable large amounts of data transfer between processes.Data structure definition for shared memory:System limits on shared memory:Shared memory vs. piping:You can see the benefits of shared memory:1.

PipelineHalf duplex. Typically created by the parent process for inter-parent and child interprocess communication. Anonymous, one on one.FD[0] Read Only//fd[1] write only int pipe (int fd[2]);Simply execute the command line and read and write