TNS-12508 When Issuing Any SET Command For The Listener fact: Oracle Net Services fact: TNS Listener symptom: Setting listener LOG_STATUS to OFF at runtime gives errors symptom: No password is set for the listener symptom: TNS-12508 / ORA…
https://www.nixtutor.com/linux/changing-priority-on-linux-processes/ Changing Priority on Linux Processes Wed, Apr 22, 2009 What is Priority and Why Should I Care? When talking about processes priority is all about managing processor time. The Proces…
shutdown immediate 经常关库时hang住,在alert中有 License high water mark = 4All dispatchers and shared servers shutdown 多等一会会出现SHUTDOWN: Active processes prevent shutdown operation 造成这个现象的原因是(也可能是em的原因,这篇与em无关): 之前的session没有断开,而后又使用了host切换到OS提示符下,导致数据库无法正常关闭 […
This is a tutorial on how to program the Serial Ports on your Linux box.Serial Ports are nice little interfaces on the PC which helps you to interface your embedded system projects using a minimum number of wires.In this tutorial we will write a smal…
============================================================================== Until Oracle 8i DBAs have been using a text file called the pfile (parameter file) to store the database initialization parameters. ---8i之前使用文本参数文件 The pfile is read at i…
1.Make sure your package repositories and installed packages are up to date by issuing the following command: yum update 2.结束后看下当前的核心是啥: uname -a 现在(我发帖日)的默认是:4.8.6-x86_64-linode78 3.Issue the following command to install the default kernel for CentO…
"Android Debug Bridge (adb) is a versatile command line tool that lets you communicate with an emulator instance or connected Android-powered device." ADB作为一个多功能命令行工具,为你与模拟器或者连接到电脑的安卓设备的通讯提供了可能. "It is a client-server program that includes…
http://www.centos.org/docs/5/html/Deployment_Guide-en-US/s1-nfs-client-config.html 18.6. NFS Server Configuration There are three ways to configure an NFS server under Red Hat Enterprise Linux: using the NFS Server Configuration Tool (system-config-n…
Install MongoDB on Red Hat Enterprise, CentOS, Fedora, or Amazon Linux¶ Overview Use this tutorial to install MongoDB on Red Hat Enterprise Linux, CentOS Linux, Fedora Linux, or a related system. The tutorial uses .rpm packages to install. While some…
Say we have installed qt programs and we want to run qtcreator from the command line. What we need here is only to put a soft link to the qtcreator we have just installed. Here are some simple precedures. Once the Qt program is installed, open up a t…
p { margin-bottom: 0.1in; direction: ltr; line-height: 120%; text-align: left; widows: 2; orphans: 2 } a:link { color: #0000ff } Overview A graphical user interface or GUI enables people especially end users to interactive with ROS through graphical…
Let’s look more closely at one of the simplest Java programs you can have—one that simply prints a message to console: public class FirstSample { public static void main(String[] args) { System.out.println("We will not use 'Hello, World!'"); } }…
http://c-nergy.be/blog/?p=5305 Hello World, Ubuntu 14.04 has been released on April 17th 2014 and we already released the traditional post about how to perform a fresh install. We didn’t covered the upgrade process because it’s quite easy nowadays. B…
Hive Concurrency Model Hive Concurrency Model Use Cases Turn Off Concurrency Debugging Configuration Locking in Hive Transactions Use Cases Concurrency support (http://issues.apache.org/jira/browse/HIVE-1293) is a must in databases and their use case…
Statistics in Hive Statistics in Hive Motivation Scope Table and Partition Statistics Column Statistics Top K Statistics Implementation Usage Configuration Variables Newly Created Tables Existing Tables Examples Current Status (JIRA) This document de…
Spreadsheet Tracking Data in spreadsheets are stored in cells, which are organized in rows (r) and columns (c). Some operations on spreadsheets can be applied to single cells (r,c), while others can be applied to entire rows or columns. Typical cel…
Editing and Deleting Data In the previous chapter we've come to learn how we can use the zend-form and zend-db components for creating new data-sets. This chapter will focus on finalizing the CRUD functionality by introducing the concepts for editing…
Installation Via Laravel Installer First, download the Laravel installer using Composer. composer global require "laravel/installer=~1.1" Make sure to place the ~/.composer/vendor/bin directory in your PATH so the laravel executable is found whe…
Quote from: http://ss64.com/nt/setlocal.html SETLOCAL Set options to control the visibility of environment variables in a batch file. Syntax SETLOCAL SETLOCAL EnableDelayedExpansion SETLOCAL EnableExtensions SETLOCAL DisableExtensions SETLOCAL Enable…
Laravel是一套简洁.优雅的PHP Web开发框架(PHP Web Framework).它可以让你从面条一样杂乱的代码中解脱出来:它可以帮你构建一个完美的网络APP,而且每行代码都可以简洁.富于表达力.官方宣传语: THE PHP FRAMEWORK FOR WEB ARTISANS. 为web艺术家创建的框架. PHP THAT DOESN'T HURT. CODE HAPPY & ENJOY THE FRESH AIR. 官网:http://laravel.com/ 中文 :http:…
Overview In this article, I’ll talk about your options when it comes to managing Group Policy using PowerShell. To be sure, depending upon your needs, Group Policy is nearly a full citizen in the world of PowerShell-based management. I’ll talk about…
Data Pump Export ATTACH Default: job currently in the user's schema, if there is only one Purpose(目的) Attaches the client session to an existing export job and automatically places you in the interactive-command interface. Export displays a descripti…
