Sahana Technologies Oracle Database Administrator Interview Questions, Process, and Tips for Experienced

Oracle Architecture is the structure and components of the Oracle database system.

• Consists of physical and logical structures

• Physical structures include data files, control files, redo log files

• Logical structures include tablespaces, schema objects

• Uses memory structures like SGA and PGA for processing data

• Processes like background processes and server processes handle database operations

RAC (Real Application Clusters) is a feature in Oracle DBA that allows multiple instances to access a single database simultaneously.

• RAC enables high availability and scalability by distributing the workload across multiple nodes.

• Each node in a RAC environment has its own instance of Oracle Database and shared access to the same database.

• RAC requires a shared storage solution like Oracle ASM (Automatic Storage Manageme...read more

Oracle DBA is responsible for managing and maintaining Oracle databases to ensure optimal performance and security.

• Responsible for installing, configuring, and upgrading Oracle database software

• Monitoring and optimizing database performance

• Implementing and maintaining backup and recovery strategies

• Troubleshooting and resolving database issues

• Managing user access and security

Physical files in Oracle DBA refer to the actual files on the operating system that store database data and metadata.

• Physical files include datafiles, control files, redo log files, and archive log files.

• Datafiles store the actual data of the database.

• Control files store metadata about the database structure.

• Redo log files store a record of changes made to the database.

• Archive log files store a copy of redo log files f