4 Replies Latest reply: Feb 27, 2013 3:31 AM by rarain RSS

    RAC 11gR2 connection between Client and VIP

    986120
      Hi Gurus,

      Can anyone tell me, Is connection established between client and VIP through SCAN VIP in oracle RAC 11gR2 environment.

      If so, what is happening technically to establish connection.

      --
      Bala :)
        • 1. Re: RAC 11gR2 connection between Client and VIP
          asahide
          Hi,

          This doc may help you.
          - 11gR2 Grid Infrastructure Single Client Access Name (SCAN) Explained [ID 887522.1]
          <<https://support.oracle.com/CSP/main/article?cmd=show&type=NOT&id=887522.1>>

          Regards,
          • 2. Re: RAC 11gR2 connection between Client and VIP
            brunors
            Hello,


            Theses articles wiil help you:

            PDF with explanation :http://orainternals.files.wordpress.com/2012/04/2012_326_riyaj_scan_vip_haip_doc.pdf

            Explain connection :http://dnccfg.blogspot.com.br/2012/09/single-client-access-name-scan-in.html


            Best regards,
            Bruno Reis.
            www.brunors.com
            • 3. Re: RAC 11gR2 connection between Client and VIP
              user12288492
              Please have a loot at the following link. It gives detailed explanation of SCAN:

              http://oracleinaction.blogspot.in/2013/01/SCAN.html

              Hope it helps
              Regards
              • 4. Re: RAC 11gR2 connection between Client and VIP
                rarain
                Hi,

                Node VIP and SCAN VIP both are different and they work independently but if you have setup SCAN With GNS in that case both are resolved in same way i.e. GNS will resolve the IP. In short whenever either application use Node-VIP or SCAN VIP the request forwarded by corporate DNS to the GNS-VIP as the delegate is configured for GNS subdomain. Once GNS received the query either for node-vip or scan it multicast the query where it is received by MDNS running on each node and MDNS respond to GNS with their respectice IP address and finally GNS return those IP to corporate domain and finally reach to Client...Now client IP against Node-VIP or SCAn VIP to send the connection request.

                Regards

                Edited by: 963750 on Feb 27, 2013 1:31 AM