Setting the listener and tnsnames.ora

Hi,
I have two node cluster database 10.2.0.4 on Linux. Someone messed up with the tnsnames file and also the local,remote listener setting are gone during the switchover.
Now I just want to replace the new tns entries,listener entries, set the local/remote listener and then register the local/remote listener. During these changes it will not affect the applications, but just want to know is there any specific steps which I have to keep in mind.
Thank you.
Edited by: 936264 on May 23, 2012 8:52 AM

Hi
Did you not back them up? :-)
The answer to your question is yes. Basically, you need your listener referenced in the listener.ora for each node, then you need to reference those listeners in your tnsnames.ora - one for your local listener and another for your remote listener. A good starting point will be what you've got in your LOCAL_LISTENER and REMOTE_LISTENER parameter - that will show the names of the entries you need to create in the tnsnames.ora. I have all entries in the listener.ora and tnsnames.ora on both nodes just for simplicity but you don't have to do that.
Any idea what port you used for your listener? The default 1521?
A couple of examples from my test system:
listener.ora (we use port 1550 by the way):
LISTENER_DEVDB_NODE1 =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = node1-vip)(PORT = 1550)(IP = FIRST))
(ADDRESS = (PROTOCOL = TCP)(HOST = node1)(PORT = 1550)(IP = FIRST))
tnsnames.ora
LISTENER_DEVDB_NODE1 =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = node1-vip)(PORT = 1550)(IP = FIRST))
LISTENER_DEVDB_NODE2 =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = node2-vip)(PORT = 1550)(IP = FIRST))
LISTENERS_DEVDB =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = node1-vip)(PORT = 1550)(IP = FIRST))
(ADDRESS = (PROTOCOL = TCP)(HOST = node2-vip)(PORT = 1550)(IP = FIRST))
So our local listener is LISTENER_DEVDB_NODEn for each and REMOTE_LISTENER is LISTENERS_DEVDB on each node.
Hope that helps. Any further questions let me know....
cheers,
Mark
orabackus.wordpress.com

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: I store my oracle database in the machine A. In the machine B,
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