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單項選擇題

You create an Oracle 10g database and configure the SPFILE as follows:  
SGA_TARGET=2G  
DB_CACHE_SIZE=512M  LOG_BUFFER=50M  
DB_KEEP_CACHE_SIZE=128M  
You modify the SGA_TARGET initialization parameter using the following statement:  
SQL>ALTER SYSTEM SET SGA_TARGET = 1G SCOPE = BOTH;  
Which entity does this statement affect?() 

A. only the auto-tuned memory components
B. only the memory components that are not auto-tuned
C. both the auto-tuned memory components and the non-auto-tuned memory components
D. neither the auto-tuned memory components nor the non-auto-tuned memory components

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