单选题Which statement must you issue to an already-running Automatic Storage Management （ASM） instance to prevent database instances from connecting to the ASM instance？（）AALTER SYSTEM KILL SESSIONBALTER SYSTEM DISCONNECT SESSIONCALTER SYSTEM QUIESCE RESTRIC
题目
单选题
Which statement must you issue to an already-running Automatic Storage Management （ASM） instance to prevent database instances from connecting to the ASM instance？（）
A
ALTER SYSTEM KILL SESSION
B
ALTER SYSTEM DISCONNECT SESSION
C
ALTER SYSTEM QUIESCE RESTRICTED
D
ALTER SYSTEM ENABLE RESTRICTED SESSION