1 Reply Latest reply: Jan 18, 2013 8:22 AM by Sebastian Solbach -Dba Community-Oracle RSS

    scan and local_listener same port??

    SaikatBanerjee
      Dear Friends,

      How come two different processes (SCAN and local listeners) run at same port? Please help.



      [root@VM-PAGRAC3 ~]# ps -ef|grep tns
      root 9 2 0 Jan17 ? 00:00:00 [netns]
      grid 6098 1 0 Jan17 ? 00:00:04 /oracle/11.2.0/grid/bin/tnslsnr LISTENER_SCAN1 -inherit
      grid 6100 1 0 Jan17 ? 00:00:04 /oracle/11.2.0/grid/bin/tnslsnr LISTENER -inherit
      root 24239 24212 0 19:20 pts/1 00:00:00 grep tns
      [root@VM-PAGRAC3 ~]# netstat -an|grep 1521
      tcp 0 0 10.17.0.165:1521 0.0.0.0:* LISTEN
      tcp 0 0 10.17.0.133:1521 0.0.0.0:* LISTEN
      tcp 0 0 10.17.0.129:1521 0.0.0.0:* LISTEN
      tcp 0 0 10.17.0.129:61836 10.17.0.129:1521 ESTABLISHED
      tcp 0 0 10.17.0.129:60884 10.17.0.134:1521 ESTABLISHED
      tcp 0 0 10.17.0.129:60880 10.17.0.134:1521 ESTABLISHED
      tcp 0 0 10.17.0.133:1521 10.17.0.133:52025 ESTABLISHED
      tcp 0 0 10.17.0.165:1521 10.17.0.130:45245 ESTABLISHED
      tcp 0 0 10.17.0.129:60889 10.17.0.134:1521 ESTABLISHED
      tcp 0 0 10.17.0.133:1521 10.17.0.133:60448 TIME_WAIT
      tcp 0 0 10.17.0.129:60886 10.17.0.134:1521 ESTABLISHED
      tcp 0 0 10.17.0.129:60882 10.17.0.134:1521 ESTABLISHED
      tcp 0 0 10.17.0.129:60893 10.17.0.134:1521 ESTABLISHED
      tcp 0 0 10.17.0.129:60223 10.17.0.134:1521 ESTABLISHED
      tcp 0 0 10.17.0.133:52025 10.17.0.133:1521 ESTABLISHED
      tcp 0 0 10.17.0.129:62178 10.17.0.134:1521 ESTABLISHED
      tcp 0 0 10.17.0.129:60891 10.17.0.134:1521 ESTABLISHED
      tcp 0 0 10.17.0.129:1521 10.17.0.129:61836 ESTABLISHED
      tcp 0 0 10.17.0.129:60264 10.17.0.13