单选题Your database instance is running.You are not able to access Oracle Enterprise Manager Database Control because the listener is not started.Which tool or utility would you use to start the listener?（）AOracle Net ManagerBListener Control utilityCDatabase Configuration AssistantDOracle Net Configuration Assistant
单选题
Your database instance is running.You are not able to access Oracle Enterprise Manager Database Control because the listener is not started.Which tool or utility would you use to start the listener?（）
A
Oracle Net Manager
B
Listener Control utility
C
Database Configuration Assistant
D
Oracle Net Configuration Assistant
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