Top 80 oracle dba interview questions and answers techgoeasy. Oracle database 9i, 10g, and 11g programming techniques and. Illustrates the relationships between key database structures. The dba can resize the database buffer cache and shared pool dynamically. The package state changes when a package subprogram changes the variables. Becoming a good dba depends on the knowledge you have in the overall architecture of oracle database. Oracle dba learn oracle 11g 12c database admin step by step oracle sql tutorial for oracle sql oracle dba interview questions most asked oracle dba interview questions. He is the primary internet database designer and an oracle dba at lands end in dodgeville. Rac architecture concepts in oracle db components tutorial. Oracle architecture interview questions and answers. Oracle database architecture is a combination of instance and database. The second activity that the dba will perform as part of creating a database is the creation of physical data storage resources in the oracle architecture, such as datafiles and redo log files.
Oracle architecture explained in detailed administration i. Oracle official database architecture diagram shows a link between dbwr and redo log buffers. In earlier forms of this architecture, all components of the database were meant to work in a onetoone mapping with each other. Pdf oracle 11g installation et administration cours et. Introduction to oracle 11g database administration page 2 of 185. Oracle database 9i, 10g, and 11g programming techniques and solutions oracle database 12c dba handbook oracle press. If a session loads a plsql package into memory, then the uga contains the package state, which is the set of values stored in all the package variables at a specific time see plsql packages. You will learn about the various processes, memory areas, files that are involved in the architecture of oracle database. Exploring the oracle database architecture slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Oracle database architecture companion ebook available expert second edition 7. Oracle database is an objectrelational database management system developed and marketed by oracle corporation.
Oracle includes different software mechanisms to achieve data optimization, maximized data concurrency, high performance for maximum productivity for multi users in database environment. Installation of oracle 11g databases in production, development and test environments depending on project requirements. Oracle and java are registered trademarks of oracle andor its af. Module 1 oracle architecture primary architecture components the figure shown above details the oracle architecture. About the authors bob bryla is an oracle 9i and 10g certified professional with more than 20 years of experience in database design, database application development, training, and oracle database administration. Awr vs statspack reports in oracle 11g dataguard and rac background processes in oracle 11g background process in oracle how to resize the redo logfile online redo logfile in oracle 11g. His bestselling books include oracle database 11g dba.
Sql fundamentals course material and training, pdf document under 500 pages for advanced users. Oracle ebusiness suite ebs blog for dba, rac, ebs dba. To print this on a single page, copy the image to a word processorpresentation package and choose the fitto page option in the print dialogue. These notes introduce the oracle server architecture. With this oracle database 11g training, you can start your way to becoming the indispensable oracle dba in your business. Aug 05, 2015 exploring the oracle database architecture slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Oracle database 12c helped dbas make more efficient use of their it resources, while continuing to reduce costs and improve service levels for end users. Orneklerle oracle 11g r2 ve genel kavramlar oracle 11g r2 general concepts with examples was published as a book. A server is a collection of database units and it provides comprehensive integrated approach to info management.
Jun 07, 2019 hope you like this compilation of core oracle dba interview questions and answers. The oracle server also accesses parameter files and password files. The architecture includes physical components, memory components, processes, and logical structures. Basics of the oracle database architecture oracle certified. Multipleprocess oracle also called multiuser oracle uses several processes to run different parts of the oracle database code and additional processes for the userseither one process for each connected user or one or more processes shared by multiple users.
When you connect to an oracle database instance, you create a session that uses a server process for communication between the client and database instance. Administration workshop to a single database ocssd. So, you still have an opportunity to move ahead in. In this post, you will learn about the oracle database architecture components such as log writer, db writer,etc background processes, sga, buffer cache, shared pool, etc memory layout memory buffer,datafiles, controlfiles, etc physical oracle layout.
Pro oracle database 11g administration experts voice in oracle. Oracle rac is heavily dependent on the interconnect, an efficient and high speed private network. Feb 09, 2009 captions available i assume that its the i like. In this oracle dba tutorial, next, we have collated the basic terms used in oracle rdbms. It covers the innovations that improve the database for. Instance is a combination of memory structures and background processes which helps in reading and writing the data tofrom the database. Oracle architecture in less than 10 minutes youtube. Oracle dba resume samples with headline, objective statement, description and skills examples. Overview of oracle grid architecture difference between a cluster and a grid. Oracle database 9i, 10g, and 11g programming techniques. Base tables are dictionary information of the database. The following information from oracle provides general guidelines for the content likely to be included on the oracle database 11g.
An oracle database consists of a database and at least one. This oracle database 11g training gives you solid foundations to exploit oracle 11g and build robust databases. Database tier the oracle applications architecture is a framework for multitiered, distributed computing that supports oracle applications products. If youre looking for oracle dba interview questions for experienced or freshers, you are at right place. Oracle concepts and architecture interview questions and answers includes, physical database, structure of oracle database, components of logical database, tablespace, system tablespace, relationship among. Shared vs dedicated database components in a rac architecture. Learn oracle 11g 12c dba step by step with examples. An oracle server includes an oracle instance and an oracle database. Oracle database is commonly referred to as oracle rdbms or simply oracle. From 12c with architecture everything has changed even the basic commands to administer and maintain a database.
Oracle database 11g architecture ampersand academy. The idea of these posts is to help the dbas who have understanding of 11g but are yet not aware of 12c. Oracle concepts and architecture interview questions and answers. Here is some of the interesting information from oracle. Oracle dba tutorial for beginners learn oracle dba. It covers the innovations that improve the database for windows, but does not cover features. Oct 15, 2015 the figure shown above details the oracle architecture. Bob bryla is an oracle 9i and 10g certified professional with more than 20 years of experience in database design, database application development, training, and oracle database administration. A complete free tutorial for download about oracle database 11g. The oracle database server consists of many different components.
By default, the package variables are unique to and persist for the life of the session. In this course, i have covered both oracle database 11g and oracle database 12c so that you get to know the differences and can work in organizations, who are still in 11g. Oracle database architecture overview bjorn engsig bjorn. Oracle dba tutorial oracle severarchitecure 11g r2 by. There are a lot of opportunities from many reputed companies in the world. Oracle 12c architecture oracle database internal mechanism.
Oracle database 2 day dba and oracle database administrator s guide to. An oracle database includes several different types of files. Hence sharing these posts to quickly adapt the 12c changes for 11g dba. Some of these components are memory structures, while others are processes that execute. Generally hard to find this relation in any oracle documents such as concepts and admin as this is very internal design aspect of recovery. How to check sga total size and free space in oracle11g basic linux commands oracle database 11g architecture. Oracle dba 11g12c database administration for junior dba oracle 11g certified professional exam prep i. Home interview question and answer oracle oracle concepts and architecture. A process, also termed as a task or a job, is a running instance. It is defined as the background process and memory structure used to retrieve data from a database process. Oracle concepts and architecture interview questions and.
Its free and covers basic as well as advance oracle dba topics. According to research, oracle dba has a market share of about 0. With this oracle database 11g training, you can start your way to becoming the indispensable oracle dba in. Oracle database, since its inception, has always used a very specific and unique architecture which served it very well. The final and perhaps the most important aspect of creating a database is creating the structures that comprise the oracle data dictionary. Hi, please provide oracle 11g database architecture documents. Getting started with oracle database 12c multitenant architecture. He is the primary internet database designer and an oracle dba at lands end in dodgeville, wisconsin. However, the dba can let the oracle dbms determine the appropriate amount of memory. Oracle dba 11gr2 architecture cache computing databases. This chapter discusses the memory architecture of an oracle database instance. Over 8 years of strong experience in oracle database administration in heterogeneous system environment including solaris, unix, and windows, supporting a variety of mission critical applications with oracle 10g and 11g. Top oracle dba interview question and answers for 2020. The architecture includes physical components, memory components, processes.
Pdf expert oracle database 11g administration pp 165214 cite as. As an oracle dba, you know that a standard database runs on a single instance. Free oracle database tutorial oracle database architecture. Oracle dba learn oracle 11g 12c database admin step by step oracle sql. Oracle dba 11gr2 architecture pga program global area a program global area pga is a memory area used by a single oracle database server process. Oracle dba tutorial for beginners learn oracle dba online. This course will help you to get a deep understanding of the fundamentals of oracle database architecture and will lay the foundation for skills on the job as a dba and also help you in taking up the dba certification. Structure, contents, and location of the automatic diagnostic repository.
Oracle database 11g administration workshop ii pdf 12. It is defined as the background process and memory structure used to retrieve data from a database. Pdf oracle 11g administration cours et formation gratuit. If you continue browsing the site, you agree to the use of cookies on this website. Interactive quick referencenovember 1, 2017in articles. In this post, you will learn about the oracle database architecture components such as log writer, db writer,etc background processes, sga, buffer cache, shared pool, etc memory layout memory. Oracle database administrators guide, 11g release 2 11. During this oracle database 11g dba training, you will learn the installation, management, architecture, and components of an oracle database, as well as the interactions between the different elements. Exploring the oracle database architecture explain the memory structures. Oracle 11g architecture diagram with explanation oraclehelp. Memory configurations for the system global area can be made without shutting down the database instance. To learn oracle dba, it is required to understand the basic terminology used in it. This tutorial provides mentioned information is to get the basic understanding of the database.
Oracle database 11g architecture on windows page 4 to innovate and leverage new windows technologies. Hope you like this compilation of core oracle dba interview questions and answers. Instance is a combination of memory structures and background processes which helps. This white paper discusses the architecture of oracle database 11g on windows in detail. Most databases are multiuser because a primary advantages of a database is managing data. This paper describes the architecture of the oracle database on windows and how it differs from its counterparts on unix and linux. Explain briefly about oracle database architecture.
May 24, 2008 expert oracle database architecture by thomas kyte and darl kuhn expert oracle database architecture. Oracle components the database the instance oracledata. Oracle concepts and architecture interview questions and answers includes, physical database, structure of oracle database, components of logical database, tablespace, system tablespace, relationship among database, schema, schema objects, table. Oracle database 12c, released in 20, was designed for the cloud, featuring a new multitenant architecture, inmemory column store, and support for json documents. I am not able to find document related to architecture. Oracle database 2 day dba and oracle database administrator s guide to learn about memory management options. Part ii oracle database architecture 2 data blocks, extents, and segments introduction to data blocks, extents, and segments 21 overview of data blocks. But from version 12c onwards, a completely new architecture has been introduced oracle multitenant. They will be created at the time of database creation using sql.