Redirect with wrong IP or SCAN HEADPHONE PORT.

Hello guys.

I will try to be as brief/clear I can. I've been struggling with this problem for a few months now, and yet, I couldn't find a solution and more I tried everything (or at least, that's what I think).

Scenario of: *

< Li > node cluster two
< Li > Oracle CRS and DBMS 11.2.0.3 (power SUPPLY 5 block has been applied to the GI)
< Li > several databases created on this subject, all the 11.2.0.3.
LISTENER_SCANs < li > three
< Li > a local LISTENER by node
< Li > SINGLETON and UNIFORM services (I'll show you example SINGLETON).
Mode SHARED server, < li > three dispatchers on random ports. NO, I don't have a firewall problem :)
B < li > SERVER with LISTENER_SCAN1
< Li > SERVER A with LISTENER_SCAN2 and LISTENER_SCAN3

What I want to do? *:

Connect to the SINGLETON service using a SHARED and of course server using the cluster name (SCAN).

What is the result? *:

< Li > IF I use the name of the cluster (cluster.domaine.com) some time, the connection works, sometimes fails.
< Li > IF I use the LISTENER_SCAN running on the server running the service SINGLETON (B), connection is successful.
< Li > IF I use the LISTENER_SCAN running on the OTHER (A) server, the connection fails.

LISTENER-SCAN3 server log has*.
04-APR-2013 14:05:37 * (CONNECT_DATA=(CID=(PROGRAM=JDBC Thin Client)(HOST=__jdbc__)(USER=bogdan))(SERVICE_NAME=dbname_srv_s)(CID=(PROGRAM=JDBC Thin Client)(HOST=__jdbc__)(USER=bogdan))) * (ADDRESS=(PROTOCOL=tcp)(HOST=bogdansIP)(PORT=58611)) * establish * dbname_srv_s * 0
04-APR-2013 14:05:39 * service_update * asuadev4_2 * 0
04-APR-2013 14:05:40 * (CONNECT_DATA=(CID=(PROGRAM=JDBC Thin Client)(HOST=__jdbc__)(USER=bogdan))(SERVICE_NAME=dbname_srv_s)(CID=(PROGRAM=JDBC Thin Client)(HOST=__jdbc__)(USER=bogdan))) * (ADDRESS=(PROTOCOL=tcp)(HOST=bogdansIP)(PORT=58613)) * establish * dbname_srv_s * 0
04-APR-2013 14:06:38 * (CONNECT_DATA=(CID=(PROGRAM=JDBC Thin Client)(HOST=__jdbc__)(USER=bogdan))(SERVICE_NAME=dbname_srv_s)(CID=(PROGRAM=JDBC Thin Client)(HOST=__jdbc__)(USER=bogdan))) * (ADDRESS=(PROTOCOL=tcp)(HOST=bogdansIP)(PORT=58624)) * establish * dbname_srv_s * 0
Of Wireshark, I get this*.

I tried to sniff packages to see what's happening and what I get is a REDIRECT to LISTENER_SCAN3 IP (running on A) with the port of the splitter that runs on server B.
Redirect Data: (ADDRESS=(PROTOCOL=tcp)(HOST=x.x.x.241)(PORT=56270))
Redirect Data: (ADDRESS=(PROTOCOL=tcp)(HOST=x.x.x.241)(PORT=9317))
Redirect Data: (ADDRESS=(PROTOCOL=tcp)(HOST=x.x.x.241)(PORT=50045))
bash>srvctl config scan
SCAN name: cluster.domain.com, Network: 1/x.x.x.0/255.255.254.0/bond0
SCAN VIP name: scan1, IP: /cluster.domain.com/x.x.x.242
SCAN VIP name: scan2, IP: /cluster.domain.com/x.x.x.243
SCAN VIP name: scan3, IP: /cluster.domain.com/x.x.x.241

bash>crsctl status res -t
...
ora.LISTENER_SCAN1.lsnr     1        ONLINE  ONLINE       B
ora.LISTENER_SCAN2.lsnr     1        ONLINE  ONLINE       A                                      
ora.LISTENER_SCAN3.lsnr     1        ONLINE  ONLINE       A   
...
ora.scan1.vip               1        ONLINE  ONLINE       B                                     
ora.scan2.vip               1        ONLINE  ONLINE       A                                      
ora.scan3.vip               1        ONLINE  ONLINE       A  
...
Status of the database and services*.
ora.dbname.dbname_srv_s.svc     1        ONLINE  ONLINE       B                                     
ora.dbname.dbname_srv_u.svc     1        ONLINE  ONLINE       B                                     
                                2        ONLINE  ONLINE       A                                      
ora.dbname.db                   1        ONLINE  ONLINE       A                 Open                
                                2        ONLINE  ONLINE       B                 Open 
Some settings*.
NAME                   SID        VALUE                               IsSpec
---------------------- ---------- ----------------------------------- ------
dispatchers                  *          (protocol=tcp)(dispatchers=3)       TRUE
local_listener               *                                                 FALSE
max_shared_servers           *          500                                 TRUE
processes                    *          2000                                TRUE
remote_listener              *          cluster.domain.com:1521    TRUE
sessions                     *          445                                 TRUE
shared_server_sessions       *          100                                 TRUE
shared_servers               *          40                                  TRUE
What ports are open tied to dispatcher processes*.
tcp        0      0 :::56270                    :::*                        LISTEN      1356/ora_d000_dbnam 
tcp        0      0 :::9317                     :::*                        LISTEN      1361/ora_d001_dbnam 
tcp        0      0 :::50045                    :::*                        LISTEN      1368/ora_d002_dbnam 
I would like to know if you need aditional information thank you very MUCH for any help you can provide me.
Alex.

Levi.

I just noticed I have not updated in this topic. I'm really sorry.
The problem is finally solved!

It's a major problem within the company, but the thing is, we have different environments with different configurations and teams taking care of so many miss communication that's happened.

Basically, Prod and Cert have Firewall with open ports (that's the dispatchers/dispatchers and so). I asked team on the network firewall that we have and they say that we had no restrictions I stop just a matter "firewall." That as my mistake.

Not to mention that we have not all restrictions on the firewall, we have, there are certain characteristics which, after a long period of investigation at the networking level (using Wireshark to read the packets and see the results of the redirection, among other things), we could see that some thing in the middle was ruin it.

That was, "SQLNet Packet Inspection" enabled by default! I had to disable it and everything started working after that.

Of course, Oracle Support did not help AT ALL which is really bad, because we spend a lot of money on support. I told her about the firewall at the end and they say 'contact your network management team' rather than provide an any clue on this question.

Anyway, thanks a LOT Levi for your dedication to my problem.

Thank you for the Uruguay.
Alex.

Tags: Database

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