Yourtnsnames.orafilehasthefollowingentryfortheservicealiasORCL:ORCL=(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=10.156.24.216)(PORT=1521))(CONNECT_DATA=(SERVER=DEDICATED)(SERVICE_NAME=orcl.oracle.com)))TheTNSPINGcommandexecutessuccessfullywhentestedwithORCL

题目

Yourtnsnames.orafilehasthefollowingentryfortheservicealiasORCL:ORCL=(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=10.156.24.216)(PORT=1521))(CONNECT_DATA=(SERVER=DEDICATED)(SERVICE_NAME=orcl.oracle.com)))TheTNSPINGcommandexecutessuccessfullywhentestedwithORCLbutyouarenotabletoconnecttothedatabaseinstancewiththefollowingcommand:SQL>CONNECTscott/tiger@orclWhatcouldbethereasonforthis?()

A.Thelistenerisnotrunningattheserver.

B.TheTNS_ADMINenvironmentalvariableissettoawrongvalue.

C.Theorcl.oracle.comdatabaseserviceisnotregisteredwiththelistener.

D.TheDEFAULT_DOMAINparameterissettoawrongvalueintheSQLNET.ORAfile.


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参考答案和解析
参考答案:C
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