Oracle Database 19C
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https://www.oracle.com/webfolder/technetwork/tutorials/architecture-diagrams/19/database-technical-architecture.html https://www.oracle.com/webfolder/technetwork/tutorials/architecture-diagrams/19/pdf/db-19c-architecture.pdf https://docs.oracle.com/en/database/oracle/oracle-database/19/administration.html https://k21academy.com/oracle-apps-dba-r12/19c-database-in-oracle-ebs-r12-everything-you-must-know/