The alert log file is a grab bag of messages about the state of the database instance. It contains entries about significant database events, such as database startup and shutdown, nondefault initialization parameters, ALTER SYSTEM commands, and various errors. Alert Log File : A text file that contains entries about significant database events, such as [...]
Continue reading → ICMP ( INTERNET CONTROL MESSAGE PROTOCOL) messages are divided into two broad categories : error-reporting messages and query messages. The error reporting messages report the problems that a router or a host (destination) may encounter when it processes an IP packet. They would report back the problem back to the IP module at the sending system. [...]
Continue reading → There are five different IP address classes: A,B,C,D AND E. These are designed to cover the needs of different types of organization. The first few bits of the 32 bit IP address determines the type of address class to which IP address belongs. Class A If the first bit is 0 then the given address [...]
Continue reading → There is a need to identify the host systems on the Internet uniquely irrespective of the underlying network technology used. Also the addressing mechanism used should be such that very minimum logic is required to identify the network to which the host is connected in the Internet so that routing becomes easy and efficient. Routing [...]
Continue reading → There are two classes of software that make up desktop software and multimedia products: executables and libraries, Executables can be completely self-contained executable programs that provide for all functionality of a particular application. More commonly, especially with complex window-based applications, executable programs are supported by libraries that provide functionality that is either shared between applications [...]
Continue reading → Multimedia products generally have two functional modes: development and delivery. In the development mode, multimedia products depend on a variety of function to create and edit text and graphics, capture and digitize audio and video, and assemble content into comprehensive products. Delivery depends on the ability to present text, graphics and video, generate sound, and [...]
Continue reading → Entertainment and game products are among the most popular, especially for those people who may never use a computer for any other reason. Entertainment and game products may be accessed on standard computer workstations CD-ROM or networks or an special purpose game machines that connect to television monitors for display. Like kiosks, entertainment and game [...]
Continue reading → Kiosk products, ranging from bank machines to mall information centres to point-of-sales systems, are finding their way into many aspects of our lives. Kiosk products are characterized by having a relatively simple function and by being very easy to use. For example, a kiosk found in a shopping mall may be used to identify and [...]
Continue reading → Yes ofcourse, MS Windows & Linux can be installed on same computer. Many Linuxers use a dual boot system. This is achieved by installing MS Windows on one hard-drive partition and installing Linux on another partition. Linux has a boot manager called GRUB (some, particularly older distributions may contain another boot manager called LILO). The [...]
Continue reading → Possible answer for the above question is : Debian, Slackware,or Basic Linux (current version), or an older version of Redhat, Mandrake, or SuSE, TurboLinux are optimized/suitable for hardware current at the date of their release. They may be difficult or impossible to install on older machines mostly due to the memory constraints and speed. Debian [...]
Continue reading → The statement Linux is idealistic “dreaming”; it is business that rules the world now-a-days… to much extent this is true . Today, let us think that Linux is a consortium. Businesses and even individuals get together to address a common computing need or problem. They may chip in labor or money, hire a technical leader [...]
Continue reading → No one knows to calculate the “total cost of ownership” of a general piece of software, no matter how clever terms they use for that.. So a good lawyer & a good accountant can prove whatever point they are paid to make. They appear to regularly do so. For example, does your calculations of the [...]
Continue reading → RGB color: This is color based upon light . Your computer monitor and television use RGB. The name “RGB” stands for Red , Green, Blue, which are the 3 primaries (with green replacing yellow). By combining these 3 colors, any other color can be produced. Remember, this color method is only used with light sorces; [...]
Continue reading → The Recovery Manager (RMAN) tool is an extensive and comprehensive set of tools that can streamline the backup and recovery of a database. It can be accessed via either a command line or a GUI interface through OEM by selecting Tools Database Tools Backup Management Backup. Using RMAN can reduce errors by automating many of [...]
Continue reading → Oracle Log Miner is a tool the DBA can use to view past activity in the database. The Log Miner tool can help the DBA find changed records in redo log files by using a set of PL/SQL procedures and functions. Log Miner extracts all DDL and DML activity from the redo log files for [...]
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