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bash-3.1$ cd $ORACLE_HOME/bin
bash-3.1$ ./lsnrctl
LSNRCTL> status
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CONNECT (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1)))
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LSNRCTL> start
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bash-3.1$ cd $ORACLE_HOME/network/admin
bash-3.1$ ls
ºó£¬·¢ÏÖlistener.oraºÍtnsnames.oraÎļþ¶¼ÔÚ¸ÃĿ¼Ï£¬È»ºó
bash-3.1$ cat listener.ora
ÀïÃæÓв¿·ÖÄÚÈÝÈçÏ£º
LISTENER =
  (DESCRIPTION_LIST =
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1))
      (ADDRESS = (PROTOCOL = TCP)(HOST = RHEL)(PORT = 1521))
    )
  )
È»ºó£¬Ôٲ鿴tnsnames.oraÎļþ
bash-3.1$ cat tnsnames.ora
ÀïÃæµÄÄÚÈÝÈçÏ£º
ORCL =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = RHEL)(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = orcl)
    )
  )
ʹÓÃhostnameÃüÁîÀ´²é¿´Ö÷»úÃûÊÇ·ñÓÐ´í£¬ÈçÏÂ
bash-3.1$ hostname
µÃµ½µÄ½á¹ûÊÇ£ºRHEL
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ÐÞ¸Älistener.oraÎļþÖеÄLISTENER£¬Ð޸ĺóΪ£º
LISTENER =
 


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