Sure, UDP is better, that is why by default it uses UDP. But in my
environment I must have to
use TCP and trying to find out if there is any way to do it.
Thanks,
-DSR
quarkman_at_myrealbox.com (Quarkman) wrote in message news:<6f2ab2f8.0308271650.2a354033_at_posting.google.com>...
> ge_2000_2001_at_yahoo.com (gdb_dsr) wrote in message news:<6299d152.0308261646.295d3344_at_posting.google.com>...
> > Oracle9iRAC 9201/Linux(RH9.0) instance processes and oracm works using
> > UDP protocol over cluster (ethernet) interconnect when I traced it. I
> > want to configure and run on TCP.
> > Wondering if someone knows about it. Thanks in advance.
>
> Why on Earth would you want to use TCP instead of UDP???
>
> TCP/IP was invented as a routable, error-corrected, protocol for
> heteorogenous networks (the name "Internet Protocol" is in there for a
> reason!). There is thus an awful lot of packet overhead to provide the
> necessary routing and error-correcting mechanisms, and the production
> of a TCP packet takes (relatively) a long time. This is an issue of
> high latency, and it will kill a RAC in its tracks, no matter how fast
> you then manage to actually ship the packet over the network cable.
>
> UDP is (as I understand it) a cousin of TCP, but without the routing
> and error-correting stuff. It is a relatively low latency protocol.
> And it is thus ideally suited to use in a RAC.
>
> RACs are not normally based on different machines in different
> countries. My cache fusion transfer of the EMP table block does not
> normally have to be routed via Switzerland. And TCP/IP is thus
> complete networking overkill for a RAC.
>
> Stick with UDP, I think.
> Regards
> HJR
Received on Thu Aug 28 2003 - 15:35:36 CDT
