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Questions and Answers
Which components make up the Oracle DB server architecture?
Which components make up the Oracle DB server architecture?
What is the purpose of a client process in a database server?
What is the purpose of a client process in a database server?
Can a server process run on a host other than the database host?
Can a server process run on a host other than the database host?
What is the role of background processes in the Oracle database?
What is the role of background processes in the Oracle database?
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What is the application architecture in the context of Oracle database?
What is the application architecture in the context of Oracle database?
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Which of the following is NOT a type of process in a database server?
Which of the following is NOT a type of process in a database server?
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What is the combination of the SGA and Oracle processes called?
What is the combination of the SGA and Oracle processes called?
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Which process is started when a user establishes a session and can read and write into SGA?
Which process is started when a user establishes a session and can read and write into SGA?
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What is the Oracle database referred to as?
What is the Oracle database referred to as?
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When are background processes started in an Oracle instance?
When are background processes started in an Oracle instance?
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Study Notes
Components of Oracle DB Server Architecture
- Oracle DB server architecture comprises client processes, server processes, and background processes
- Server process communicates with client process on behalf of the database
Client Process
- A client process is a user process that submits a SQL request to the database
- Its purpose is to initiate a database connection and send requests to the database server
Server Process
- A server process runs on the database host, but can also run on a host other than the database host
- It communicates with the client process and accesses the database on behalf of the client
Background Processes
- Background processes perform maintenance tasks, such as database recovery and archiving redo logs
- They run in the background, making the database more efficient and responsive
Application Architecture
- Application architecture in Oracle database consists of a client process, server process, and background processes
- It is a multi-tier architecture, with the presentation tier, application tier, and database tier
Types of Processes
- There are three types of processes: client process, server process, and background process
- There is no such thing as a "user process" in an Oracle database server
SGA and Oracle Processes
- The combination of the System Global Area (SGA) and Oracle processes is called an Oracle instance
- The SGA is a shared memory area that contains data and control information for the Oracle instance
User Session
- When a user establishes a session, a server process is started, which can read and write into the SGA
- This server process is dedicated to the user session
Oracle Instance
- An Oracle instance is referred to as the Oracle database
- It is a set of background processes and shared memory used to manage the database files
Starting Background Processes
- Background processes are started when an Oracle instance is started
- The database is not available until all background processes have been started
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Description
Test your knowledge of Oracle database architecture with this quiz. Learn about the components of an Oracle instance and database, as well as the process structure.
