RE: RAC - setting up failover and load_balance

Well, that is because of your understanding of the word "failover". Don't be confused, there are other words
in desperate need of redefinition, too. One of them is "unbreakable". To make the long story short, "FAILOVER=ON" makes possible for Oracle*Net to skip the non-functioning
TNS descriptor, not that the application should simply fail over and continue from another node. The application will simply fail, without the desired "over", unless it's written using OCI, which is the only means for an
application to resume on one of the surviving nodes. In other words, it is the TNS descriptor that "fails over",
not your application. I hope that things are clearer now.    

--
Mladen Gogala
Oracle DBA 


-----Original Message-----
laura pena
Sent: Tuesday, August 26, 2003 5:49 PM
To: Multiple recipients of list ORACLE-L


So I have RAC setup ( Solaris 2.8 , Veritas DBE/AC 3.5 MP1 and HDS disks if
you are interested) and I am attempting to setup my failover and
loadbalancing from a client.
 
 
I brought down VLDBN1 
and  Thought I should fail over to VLDB2 ... but I did not.
 
 
Here is what I have in my tnsnames.ora:
 
VLDB =
(DESCRIPTION =
    (FAILOVER=ON)
    (LOAD_BALANCE = yes)
    (ADDRESS_LIST =


      (ADDRESS = (PROTOCOL = TCP)(HOST = 10.10.250.25)(PORT = 1521))

      (ADDRESS = (PROTOCOL = TCP)(HOST = 10.10.250.26)(PORT = 1521))

    )
    (CONNECT_DATA =


      (SERVER = DEDICATED)

      (SERVICE_NAME = VLDBN2)

       (FAILOVER_MODE=
         (BACKUP=SECONDAY)
          (TYPE=select)
          (METHOD=basic)
          (RETRIES=5)
          (DELAY=5)
       )
    )
)
SECONDARY =
(DESCRIPTION =


      (ADDRESS = (PROTOCOL = TCP)(HOST = 10.10.250.26)(PORT = 1521))

     (CONNECT_DATA =
        (SERVICE_NAME = VLDBN2)
    )
)

 
Any ideas?



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-- 
Author: Mladen Gogala
  INET: mladen_at_wangtrading.com

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