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Unraveling Oracle's Inter-database Communication Journey: Network Topology

Oracle has been a game-changer in the database world for decades, and its constant evolution has only made it more robust. One of the critical features that sets Oracle apart is its inter-database communication, which has grown in functionality over the years. In this article, we'll explore since which version of Oracle has inter-database communication existed within the context of network topology, and how it has evolved over time. So, let's dive in!

Question: Since which version of Oracle has Inter-database Communication existed within the context of network topology?
Inter-database communication has been a part of Oracle's repertoire since Oracle 7, released back in 1992. It was initially designed to provide a distributed database environment, allowing multiple databases to communicate with each other within the context of network topology. This groundbreaking feature has continued to develop and expand with each subsequent version, enhancing its capabilities and making it an integral part of Oracle's database management system.

Origins of Inter-database Communication

Oracle's Pioneering Steps: As Oracle began to grow, the company recognized the need for a distributed database environment. With the introduction of Oracle 7, inter-database communication made its debut, allowing databases to communicate with one another seamlessly.

The Dawn of Network Topology

Network topology played a crucial role in Oracle's inter-database communication from the very beginning. It allowed for the establishment of efficient communication paths between databases and facilitated data exchange without compromising on security or performance.

Oracle 8: An Expanded Vision

Oracle 8 brought about significant improvements in inter-database communication. It introduced advanced replication features, enabling better data management and distribution across multiple databases.

Oracle 9i: Refining the Process

With Oracle 9i, inter-database communication was further refined, introducing features like Oracle Streams for real-time data sharing and Global Data Services for load balancing and failover support.

Delving Deeper into Inter-database Communication

Understanding Network Topology: Network topology is the arrangement of communication nodes and their interconnections in a network. It plays a critical role in inter-database communication by providing efficient paths for data exchange and ensuring optimal performance.

The Role of SQL*Net

Oracle's SQL*Net is a key component that enables inter-database communication. It allows for seamless data exchange between databases and supports various network protocols and topologies.

Inter-database Communication in Modern Oracle Versions

Oracle 12c: A New Era of Flexibility Oracle 12c brought about a new era of flexibility in inter-database communication, with the introduction of pluggable databases and improved data management features.

Oracle 19c: The Pinnacle of Efficiency

In Oracle 19c, inter-database communication has reached new heights, with enhancements in performance, security, and scalability. It's now easier than ever to manage and share data across multiple databases.


  1. Since which version of Oracle has Inter-database Communication existed within the context of network topology?
    Answer: Inter-database communication has been a part of Oracle since the release of Oracle 7 in 1992.
  2. What role does network topology play in inter-database communication?
    Answer: Network topology is crucial for establishing efficient communication paths between databases, facilitating data exchange without compromising on security or performance.
  3. What are some of the significant advancements in inter-database communication in Oracle?
    Answer: Some of the significant advancements include advanced replication features, Oracle Streams.

A distributed database is a set of databases stored on multiple computers that typically appears to applications as a single database. Consequently, an application can simultaneously access and modify the data in several databases in a network. Each Oracle database in the system is controlled by its local Oracle server but cooperates to maintain the consistency of the global distributed database.
A database server is the Oracle software managing a database, and a client is an application that requests information from a server. Each computer in a system is a node. A node in a distributed database system act as a client, a server, or both, depending on the situation. The computer that manages the HQ database is acting as a database server when a statement is issued against its local data (for example, the second statement in each transaction issues a query against the local DEPT table), and is acting as a client when it issues a statement against remote data (for example, the first statement in each transaction is issued against the remote table EMP in the SALES database). The following images illustrate the process by which a connection is made between remote databases.