(SID_LIST =
 (SID_DESC =
  (SID_NAME = PLSExtProc)
  (ORACLE_HOME = E:\oracle\product\10.2.0\db_1)
  (PROGRAM = extproc)
  )

)原先在listener.ora中是这样的

改成下面

(SID_LIST =
 (SID_DESC =
  (SID_NAME = PLSExtProc)
  (ORACLE_HOME = E:\oracle\product\10.2.0\db_1)
  (PROGRAM = extproc)
  ) (SID_DESC =
     (GLOBAL_DBNAME = ORCL)
     (ORACLE_HOME = E:\oracle\product\10.2.0\db_1)
     (SID_NAME = ORCL)
  )
)

其中注意更改oracle_home路径为本机路径

然后去重启oracle服务和监听器即可

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