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Visualizing the Complete Oracle Environment, SQL: Structured Query Language, Oracle Database Concepts, Oracle Instance Concepts, Oracle in Action, Complete Oracle System Design: Steps of Implementation, Oracle Database Design, Oracle Network Administration, Oracle Database Management, Oracle Backup & Recovery Techniques, Oracle Performance Tuning. Physical Architecture of Oracle database. Database consists mainly of three different types of files. SQL commands are very simple and very easy to master, as it is comprised of all full-length English words with no or very little abbreviations. SQL*Plus is basically the environment where we write SQL or PL/SQL commands. In other words it’s a front end tool we use to communicate with Oracle Instance. Besides these are system privileges for PL/SQL functionalities like CREATE PROCEDURE, CREATE ANY PROCEDURE, EXECUTE ANY PROCEDURE etc. Administration User Accounts Provided by Oracle There are some users accounts built-in Oracle. The administrative accounts provided by Oracle are given below. These accounts are by default locked initially. Database administrators can unlock these accounts. Relationship between Physical and Logical architecture of Oracle database. Tablespace is a name/alias given to a group of one or more data files. How Oracle works in Shared Server Mode? You can run Oracle system in two modes: Shared Server Mode or Dedicated Server Mode. Then why we need Net Service Name? My answers is, whenever you want to use SQL*Plus, MS Access etc. to connect to Oracle Database Server either on the same machine where you have Oracle Database Server or from a different machine located in different part of the world; you need to install Oracle Net and configure it for client side i.e. to create tnsnames.ora file.
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