All,

Can you bind Oracle to communicate through a particular IP address by making
note of it in the tnsnames.ora and listener.ora files.

or does it use the operating system for routing?

We are adding a second nic card for redundancy purposes whereby if one NIC
is down, the other NIC would pick up the load.

Environment:
Sun Solaris
Oracle EE 8.1.7.2

The current game plan is documented below:
-------------------------
Configure the interface on the sun server
  * ping from local machine to the new address
  * ping from other machine on the same subnet to new address

Add a second ADDRESS= line to ADDRESS_LIST section in listener.ora file
  * manually tnsping on db server using:
tnsping "(ADDRESS=(PROTOCOL=TCP)(HOST=new.ip.address)(PORT=1521))"
  * manually tnsping from other machine using same command

Add second address to address tnsnames.ora service name (under 
ADDRESS_LIST section)
  * tnsping the service name to ensure that some form of it works (this 
will not check the new interface, necessarily)
  * use sqlplus to connect to service

Add second address to clients' tnsnames.ora files
  * tnsping service name on each client
  * use sqlplus to connect to service on each client

Physically remove ethernet cable from old NIC on DB server (could be 
simulated by simply bringing down the network interface in software, but 
this could cause other problems)
  * tnsping service name from db server
  * tnsping service name from clients
  * use sqlplus to connect to service on db server
  * use sqlplus to connect to service on each client

Replace network cable and/or re-enable interface on db server
  * tnsping service name from db server
  * tnsping service name from clients
  * use sqlplus to connect to service on db server
  * use sqlplus to connect to service on each client


Thanks in advance.


Roy E Ferguson II

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Author: Ferguson II, Roy E
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