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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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出自：Oracle认证

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