Which three statements are true about System Global Area (SGA)?
A. SGA contains shared memory structures for all Oracle processes running on a single server.
B. Each server process has its own SGA.
C. SGA is allocated automatically when a database is started.
D. SGA is used to speed up queries by caching data blocks, program data, information about database objects, and query results
E. SGA is allocated automatically when a database is mounted.
F. SGA is read and written by server and background processes.
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