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I was interviewed in Dec 2022.
Oracle database architecture and multi-tenant architecture in Oracle 12c
Oracle database architecture includes physical and logical structures
Multi-tenant architecture in Oracle 12c allows multiple pluggable databases to share a single container database
Each pluggable database has its own set of tablespaces, users, and schemas
This architecture reduces hardware and software costs and simplifies database management
RAC is a cluster database that allows multiple instances to access a single database. DR is a disaster recovery database.
RAC stands for Real Application Clusters
RAC allows multiple instances to access a single database simultaneously
DR stands for Disaster Recovery
DR is a separate database used for backup and recovery in case of a disaster
DR can be located in a different physical location than the primary database
RAC an...
ASM stands for Automatic Storage Management. It is a feature of Oracle Database that provides a file system and volume manager.
ASM simplifies the management of Oracle database files by providing a single file system for all database files.
It also provides redundancy and load balancing for the database files.
The maximum limit for ASM disk groups is 63.
ASM can be used with both single-instance and Oracle Real Application
Voting disk is a file used by Oracle Clusterware to manage cluster membership and node failure detection.
It is a shared disk that is accessible to all nodes in the cluster.
It contains information about the current state of the cluster and is used to determine the membership of the cluster.
It is used to determine which nodes are active and which are inactive in case of a node failure.
It is recommended to have at least t...
Golden Gate is a database replication technology used for high availability and disaster recovery.
Golden Gate is used to replicate data in real-time from one database to another.
It can be used for high availability and disaster recovery purposes.
It supports heterogeneous database environments and can replicate data across different platforms.
Golden Gate can also be used for data integration and migration.
It provides re...
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