试题详情
- 单项选择题Which one of the following statements about the TNSPING utility is correct？（）
A、It helps you to determine whether or not the Oracle database is running.
B、It requires the username and password to check the connectivity of the service.
C、It does not require the username and password to check the connectivity of the service.
D、It establishes a session with the database and checks the connectivity of the service.
- B
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