How oracle architecture is work. How to check if user password expired If dataguard not in synch what steps to follow and synch the standby database from primary. What is ASM and how to start and stop ASM. How to take RMAN backup and why use this tool,and how many types to take backup using RMAN. How to restore database.

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Oracle architecture is a multi-tiered structure that includes the client, application server, and database server.

Oracle architecture consists of multiple components such as the client, application server, and database server.
The client sends requests to the application server, which in turn communicates with the database server.
The database server manages the storage, retrieval, and manipulation of data.
Oracle architecture follows a client-server model.
The client can be a user interface or an application that interacts with the database server.
The application server acts as an intermediary between the client and the database server.
The database server stores and manages the data using various components like the instance, memory structures, and background processes.

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