What is difference between Oracle Database and instance?

What is the difference between an instance and a database?

While the database includes the application data and metadata stored in physical files on a server, an instance is a combination of the software and memory used to access that data. For example, if you sign in to an Oracle database, your login session is an instance.

What is Oracle instance in Oracle database?

An Oracle instance (also known as a database instance) contains the set of Oracle Database background processes that operate on the stored data and the shared allocated memory that those processes use to do their work.

What is the difference between a SQL database and instance?

The main difference between instance and database in SQL server is that an instance is a copy of the sqlservr.exe executable, which runs as an operating system service while a database is a systematic collection of data that stores data in tables.

What is the difference between database name and instance name?

SID and instance name are the same thing and identify database instance = processes and memory. Database name identifies database = database files on disk. Service name identifies database instance for Oracle Net i.e. for remote access to database instance.