You received this error message because Oracle Net Services cannot locate the connect descriptor specified in the tnsnames.ora configuration file： ORA_12154： TNS：could not resolve service name Which three actions would be appropriate in helping to resolve the error？（）
- A、A
- B、B
- C、C
- D、D
- E、E
- F、F
正确答案:B,D,E
答案解析:有
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