ORA-01502 Oracle Index in Unusable StateWhen trying to perform query on Oracle tables with select SQL statement, Oracle returns the following error:ORA-01502: index ‘string.string’ or partition of such index is in unusable stateThe error indicates an attempt has been made to access an index or index...

Oracle Database LinkIn distributed Oracle environments, database links can be used to define a communications path between two databases. A database link defines a network connection, and, optionally, a username and password, to use when Oracle accesses and establishes a database session in the remote...

Important Tools and Utilities in One Google PackGoogle has packed all the most essential and the best software for personal computer in a package named Google Pack for the ease of computer users.These must-have applications will helps to protect computer from virus, adware and spyware, enhances the...

Watch Streaming p2p Live TV on the InternetThe advance of peer-to-peer technology (p2p) has make possible the distribution of video and TV streams via p2p network. p2pTV is the software application that doing basically that, designed to redistribute video streams on a p2p network.p2pTV is not the old...

YouTube Video Sharing and HostingYouTube is a Flickr-like online video service, which provides free video hosting and storage so that users can share it with their friends, family or even to the whole world. In short, YouTube is Flickr for videos.Basically, start by create a new free account at YouTube....

Check Cisco Switch Version and HardwareIn order to check Cisco Catalyst switch software version and hardware information, use the following command:show versionorshow hardwareBoth commands can be used, and the output can be interpreted like the following:Cisco Internetwork Operating System SoftwareIOS...

System Tray Icon Missing from System Tray in Windows XPSymptomsAfter the computer started, not all icons that should be present in the system tray (nowadays also called notification area) of the task bar is showing. Often, one or more icons are missing and disappearing from the task bar notification area.This...