itsm processes

1. The relationship between Oracle sessions and processes Modified through SQLPlus is: Sessions = 1.1 * processes + 5 Use sys to log on with sysdba permissions: SQL> show parameter processes; Name type value -------- Aq_tm_processes integer 1db_writer_processes integer 1 Job_queue_processes integer 10 Log_archive_max_processes integer 1

View cpu usage information of processes in memory. For Linux Command-TOP, we use the top command to view CPU usage. Top does not produce output, and the screen content remains unchanged. It refreshes the screen to display new information. Therefore, if you only execute top and keep the screen open, the screen will always display the latest information. The command to exit top is q, or press Ctrl-C. top-17:03:45 up 58 days, 1 user, load average: 0.00,

Ps command is a very powerful process view command in the most fundamental circumstances. this command can be used to determine which processes are in the running and running status, whether the process is terminated, whether the process is dead, and which processes occupy excessive resources. in short, most of the information can be obtained by executing this command.View process ps commands and parameters

In Win9x, you only need to register the process as a system service to be invisible from the process viewer. Winnt is completely different. No matter how clever a Trojan can hide itself from a port or Startup File Spoofing winnt's task manager, so many friends asked me: Is it true that Trojans can no longer be hidden in winnt? Hiding your own processes? This article attempts to explore several common hidden process methods of Trojans in winnt to

　　 Introduction Data exchange and sharing between processes is a very important and practical technology. The development and design of large and medium-sized software are mostly completed by the cooperation of many program designers. Generally, one program designer is only responsible for the development of one or more modules, these modules can be dynamic link libraries, applications, or other forms of program components. These independently develo

Implementation of Data Communication Between processes visual C ++ http://tech.163.com 12:18:21 Source: Tianji development comments 0 Forum In Windows, data is often exchanged and transmitted between applications (processes), which solves the problem of data communication between processes. In the original 16-bit Windows 3.x system, all Windows applications sh

1. IPC (inter-process communication, interprocess communication) several ways to communicate with threads# pipe: A pipe is a half-duplex mode of communication in which data can only flow in one direction and can only be used between processes that have affinity. A process's affinity usually refers to a parent-child process relationship.# famous pipe (named pipe): A well-known pipe is also a half-duplex mode of communication, but it allows communicatio

One, process and thread1, Process: is a computer program on a data set on a running activity, is the system for resource allocation and tuningis the basic unit of the operating system structure. In the early process design-oriented computer architecture, the process is the basic execution of the programThe process is a container of threads in a modern thread-oriented computer architecture. The program is the description of the instruction, the data and its organizationProcess is the entity of th

process control block is to record the process of changing the operation, and to describe the process, so that a program that cannot be run independently in a multi-channel program environment (with data) becomes a unit that can run independently, a process that can execute concurrently with other processes. Specific role 1. As a symbol for the independent operation of the basic unit 2. Can realize the intermittent operation mode 3. Provide the infor

　　Abbreviations for books:Csppse:computer system:a Programmer ' s perspective Second Edition　　processes (process) is an abstraction of the operating system for a running program. Multiple processes can be run concurrently on one system, and each process seems to be using the hardware exclusively. while running concurrently, the instruction of one process and the instruction of another process are interleave

Let's take a look at an example of using fork to invoke the EXECLP () function to implement the PS or LS command under Linux: #include "sys/types.h" #include "unistd.h" #include "stdio.h" #include "stdlib.h" int main () { pid_t result; Result=fork (); Error handling if (result==-1) { printf ("Fork error\n"); } Son else if (result==0) {//Call EXECLP () function, equivalent to "Ps-ef" if ((RESULT=EXECLP ("PS", "PS", NULL)) Generally speaking, we write 1 ordinary C progra

for shared memory, the POSIX API will be introduced primarily. Several main means of interprocess communication under Linux Introduction: Pipelines (Pipe) and well-known pipelines (named Pipe): Pipelines can be used for communication between relational processes, and a well-known pipeline overcomes the restriction of a pipe without a name, so that, in addition to the functionality that the pipe has, It also allows communication between unrelated

PMON, RECO, and ARCn PMON: processmonitor process Monitoring of oracle 10g processes performs data recovery when the user process is interrupted (abnormal. PMON is responsible for clearing the data buffer pool and releasing resources used by user processes, such as restoring uncommitted transactions, Releasing locks, and deleting dead processes in process columns

the resources of the computer (the kernel mentality can be, the user state is limited). Everything involved in the fundamental operation of the computer should be executed in the kernel state, and the interruption, clock date, storage image diagram are system-level resources, the modification of these resources must be in the nuclear mentality, but read there is no mandatory requirements. process consists of a process with a PCB (Process control block), a program segment, and a set of data stru

the difference between threads and processes 1) Dispatch: In the traditional operating system, the basic unit with resources and the basic unit of independent Dispatch and dispatch are all processes.While the threading operating system is introduced, the thread is used as the basic unit of dispatch and dispatch, and the process as the basic unit of the resource.2) Concurrency: In an operating system that introduces threads,

Run the "liujl @ liujl-laptop: ~" command to view and shut down processes in ubuntu :~ $ Sudonetstat-antup [sudo] passwordforliujl: activate the Internet connection (the server and the established connection) ProtoRecv-QSend-QLocalAddressForeig... run the "liujl @ liujl-laptop: ~" command to view and shut down processes in ubuntu :~ $ Sudo netstat-antup [sudo] password for liujl: activates Internet connecti

Recently, several servers were found to have zombie processes (). Run the following command to find out the zombie process ps-A-ostat, ppid, pid, cmd | grep-e '^ [Zz]' command annotation: -parameter A lists all process-o custom output fields. we set the display field to stat (status), ppid (process parent id), pid ( Recently, several servers were found to have zombie processes (). Run the following command

-1. oracle connections: the default number of Oracle connections is 150. You can set the number of oracle connections to 500 and use sys to log on to the database as sysdba (PLSQL is recommended) execute SQLshowparameterprocesses in CommandWindow; NAMETYPEVALUE -------------------------------- -1. oracle connections: the default number of Oracle connections is 150. You can set the number of oracle connections to 500 and use sys to log on to the database as sysdba (PL/SQL is recommended) execute

The kill command is used to kill processes in linux. Next we will introduce you to an example of killing processes in batches in Linux. I hope this example can help you. Kill a process in linux CommandNow, we can introduce an example of killing processes in batches in Linux. I hope this example can help you. Kill proce