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Oracle Database
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Oracle Instance
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Oracle DBA 1

Oracle DBA level one test for Associate Cerification

QuestionAnswer
Oracle Database Set of files on disk that contain the data, control parameters, and state of the files.
Oracle Instance Set of processes and CPU memory structures that control access to an active Oracle Database.
Oracle Server Oracle instance and an Oracle Database
Oracle Net Oracle's proprietary client-server communication network.
Client Tier Consists of the user and user processes. The user makes requests via the user process. The user process translates to an Oracle SQL or PL/SQL request that is sent to the Oracle Server.
Server Tier Consists of server process, the instance and the database. The server process handles communications between the user process and the server. Requests from the user process is passed to the instance processes to be executed against the database.
Session A user process linked to a Server process.
Application Server A central host for user processes. Still follows the client-server interaction with the Oracle Server
Oracle Enterprise Manager A central database management tool.
SQL Stuctured Query Language. The standard database programming language to create and manipulate database structure and data.
PL/SQL Oracle's proprietary 3rd generation programming language that can call SQL internally to interact with a database. Supports branching and looping to manipulate data.
Oracle Call Interface A library of application programs that allows other 3rd generation programming languages ( C, Java ) to interact with an Oracle server via SQL language calls. Java provides a library that virtualizes the database removing dependence on a specific DB.
SGA System Global Area System memory space shared by all processes that make up an instance. It is created with instance startup and erased with instance shutdown.
PGA Program Global Area System memory space shared by server processes that handle user process connections and provides memory for some oracle backgroung processes.
Created by: kevin.kern
 

 



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