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我正在 Oracle 18c 中创建一个新模式。架构创建成功。但是当我尝试连接到这个模式时,我收到一条错误消息:

状态:失败-测试失败:侦听器拒绝连接并出现以下错误:ORA-12514,TNS:侦听器当前不知道连接描述符中请求的服务

这是我的 listener.ora 文件:

SID_LIST_LISTENER =
  (SID_LIST =
    (SID_DESC =
      (SID_NAME = CLRExtProc)
      (ORACLE_HOME = D:\Oracle18c)
      (PROGRAM = extproc)
      (ENVS = "EXTPROC_DLLS=ONLY:D:\Oracle18c\bin\oraclr18.dll")
    )
  )

LISTENER =
  (DESCRIPTION_LIST =
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
    )
  )
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