ORA-12505, TNS:listener does not currently know of SID given in connect

ORA-12505, TNS:listener does not currently know of SID given in connect

出现这个问题上网找了很久才解决问题 是LISTENER配置问题


SID_LIST_LISTENER =
  (SID_LIST =
    (SID_DESC =
      (SID_NAME = PLSExtProc)
      (ORACLE_HOME = E:\oracle\product\10)
      (PROGRAM = extproc)
    )
    (SID_DESC =
      (GLOBAL_DBNAME = oracle)
      (ORACLE_HOME = E:\oracle\product\10)
      (SID_NAME = orcl)
    )
  )
LISTENER =
  (DESCRIPTION_LIST =
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1))
      (ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
    )
  )


改成这样就OK了