FREE 1Z0-082 Database Architecture Questions and Answers
What is the primary function of the System Global Area (SGA) in the Oracle Database architecture?
The SGA is a shared memory region that stores data that is shared among Oracle processes, including cached data blocks, SQL execution plans, and other control information.
What is the purpose of Oracle's Control File?
Control files contain metadata about the database, such as the database name, the names and locations of datafiles, and the log history, which are essential for database recovery.
Which component of the Oracle Database architecture is responsible for managing memory structures and background processes?
The Oracle Instance consists of memory structures (such as the SGA) and background processes (such as DBWn and LGWR) that manage the database operations.
Which of the following is NOT a component of the SGA in Oracle Database?
The PGA is a memory region that contains data and control information for a single process, not shared among processes, and is therefore not a part of the SGA.
Which Oracle background process is responsible for writing the contents of the Redo Log Buffer to the redo log files?
The Log Writer (LGWR) process is responsible for writing redo log entries from the Redo Log Buffer to the redo log files, ensuring that all changes to the database are logged.