What is the architecture of Oracle database?

What is the architecture of Oracle database?

There are three major structures in Oracle Database server architecture: memory structures, process structures, and storage structures. A basic Oracle database system consists of an Oracle database and a database instance. The database consists of both physical structures and logical structures.

What are the three 3 major structure in Oracle server architecture?

An Oracle instance consists of three main parts: System Global Area (SGA), Program Global Area (PGA), and background processes. The SGA is a shared memory structure allocated when the instance started up and released when it is shut down.

What is an Oracle database server?

The Oracle Server is a relational database management system that provides an open, comprehensive, and integrated approach to information management. An Oracle Server consists of an Oracle database and an Oracle instance. The following sections describe the relationship between the database and the instance.

What is the basic architecture that an Oracle DBMS uses to move data?

The relational model is the basis for a relational database management system (RDBMS). An RDBMS moves data into a database, stores the data, and retrieves it so that applications can manipulate it.

What is difference between physical and logical standby database?

Logical standby is different from physical standby: Logical standby database does not have to match the schema structure of the source database. Logical standby uses LogMiner techniques to transform the archived redo logs into native DML statements (insert, update, delete).

What servers does Oracle use?

Oracle servers

  • Oracle x86 servers.
  • Oracle SPARC M8-8.
  • Oracle SPARC T8 and S7 Servers.
  • Oracle Fujitsu SPARC servers.
  • Oracle NEBS-compliant server.

What is difference between SQL and Oracle database?

Oracle supports many “Schemas” with the instance whereas SQL server offers “Schemas” within each user database. Oracle allows database, full, file-level, incremental & differential backups on the other hand, SQL server allows full, partial, and incremental backups.

What kind of architecture does an Oracle Server have?

Oracle Database Server Architecture: Overview 1 Memory Structures. There are three major structures in Oracle Database server architecture: memory structures, process structures, and storage structures. 2 Connecting to the Database Instance. 3 Oracle Database Memory Structures. 4 Process Architecture. 5 Process Structures.

What are the memory structures associated with Oracle?

The basic memory structures associated with Oracle Database include: The SGA is a group of shared memory structures, known as SGA components, that contain data and control information for one Oracle Database instance. The SGA is shared by all server and background processes.

What makes up an instance of an Oracle Database?

An Oracle Database consists of a database and at least one instance. An instance, or database instance, is the combination of memory and processes that are a part of a running installation and a database is a set of files that store data.

What is the purpose of an Oracle Server?

An Oracle databaseis a collection of data treated as a unit. The purpose of a database is to store and retrieve related information. A database server is the key to solving the problems of information management.

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