1. Reference Link[Oracle Database 19c Administration Database Concepts](https://docs.oracle.com/en/database/oracle/oracle-database/19/cncpt/index.html)[Oracle Database 19c Reference](https://docs.oracle.com/en/database/oracle/oracle-database/19/refrn/index.html)1.1 Database and InstanceOracle Database Server (Oracle Database) = Database + Database InstanceDatabase디스크에 위치한 파일 집합Database InstanceS..
