Re: Question on interconnect configuration

Hi

I think GV$CONFIGURED_INTERCONNECTS shows all possible networks which can be used for interconnect traffic so if you dont have an interconnect Oracle might use the public network for that purpose. Following is an message when the interconnect cannot be used:

Interface type 1 lan0 10.100.70.0 configured from OCR for use as a cluster interconnect
WARNING 10.100.70.0 could not be translated to a network address error 1 Interface type 1 lan900 10.100.2.0 configured from OCR for use as a public interface
  WARNING: No cluster interconnect has been specified. Depending on

           the communication driver configured Oracle cluster traffic
           may be directed to the public interface of this machine.
           Oracle recommends that RAC clustered databases be configured
           with a private interconnect for enhanced security and
           performance.

So it seems that the public network is some sort of backup when interconnect is unavailable

Thanks

--
LSC

On 8/17/07, Anurag Verma <anuragdba_at_gmail.com> wrote:


>

> Hi All,

>

> one question on interconnect in our 2 node RAC(Oracle RAC 10.2.0.3.0 on

> Solaris 9 with Oracle clusterware and rawdevices for OCR and Voting Disk)...

>

> I ran the below query

>

>

> select * from gv$configured_interconnects

> /

>

> INST_ID NAME   IP_ADDR      IS_PUBLIC    SOURCE

> ====================================================================

> 1             bge3     192.168.1.21        NO         Oracle Cluster

> Repository

> 1             bge0     10.1.40.17          YES         Oracle Cluster

> Repository

> 2             bge3     192.168.1.22        NO         Oracle Cluster

> Repository

> 2             bge0     10.1.40.18          YES         Oracle Cluster

> Repository

>

> $  oifcfg getif

> bge0  10.1.40.0      global  public

> bge3  192.168.1.0  global  cluster_interconnect

>

>

>

>

> Does this mean that the RAC is using both Public and private interfaces

> for

> interconnect??

>

> Why does it show the public interface in the GV$CONFIGURED_INTERCONNECTS??

>

> How to find out whether only the private interface is used for

> interconnect ??

>

> Should i go for ocrdump command?

>

>

>

> --

>

> Anurag Verma,

> Database Administrator

> ERCOT(Electric Reliability Council of Texas),

> Texas 76574

>


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