What architecture does Oracle use?

An Oracle Real Application Clusters (Oracle RAC) database architecture consists of multiple instances that run on separate server machines. All of them share the same database. The cluster of server machines appear as a single server on one end, and end users and applications on the other end.

What is Oracle architecture with diagram?

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. The following picture illustrates the Oracle Database server architecture.

What is Oracle Database design?

Principles of Database Design for Oracle Parallel Server. Database Operations, Block Types, and Access Control. Global Cache Coherence Work and Block Classes. Logical And Physical Database Layout. Global Cache Lock Allocation.

What is PGA in Oracle?

A Program Global Area (PGA) is a memory region that contains data and control information for a server process. It is nonshared memory created by Oracle Database when a server process is started. The PGA is used to process SQL statements and to hold logon and other session information.

What is the architecture of the Oracle Database?

Oracle Database Architecture Summary: in this tutorial, you will learn about the Oracle Database architecture and its components. Oracle Database is an object-relational database management system developed and marketed by Oracle Corporation. Oracle Database is commonly referred to as Oracle RDBMS or simply Oracle.

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 kind of RDBMS is in Oracle 8i?

Oracle RDBMS Architecture. Oracle version 8i is an object-relational database management system (ORDBMS). Oracle8i (actually 8.1.5 production release) expands upon the new features offered in Oracle8 and makes over 150 changes or additions to the Oracle tools. A traditional RDBMS stores data in tables called relations.

What is the background process of an Oracle Database?

The following are the major background processes of an Oracle instance: PMON is the process monitor that regulates all other processes. PMON cleans up abnormally connected database connections and automatically registers a database instance with the listener process. PMON is a process that must be alive in an Oracle database.