Your database instance is started with a PFILE.Examine these parameters:You want to increase the size of the buffer cach

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Your database instance is started with a PFILE.Examine these parameters:You want to increase the size of the buffer cache.Free memory is available to increase the size of the buffer cache.You execute the command:SQL> ALTER SYSTEM SET DB_CACHE_SIZE=1024M;What is the outcome?

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A. The value is changed only in the PFILE and takes effect at the next instance startup
B. The value is changed for the current instance and in the PFILE
C. It fails because the SCOPE clause is missing
D. Change is applied to the current instance, but does not persist after instance restart