Why VIP and public IP must be in the listener.ora file
Hi allI was all confused as why it must configure the listener with VIP and IP public as shown below.
SID_LIST_LISTENER_ABCD =
(SID_LIST =
(SID_DESC =
(SID_NAME = PLSExtProc)
(ORACLE_HOME = /usr/local/opt/oracle/product/10.2.0)
(PROGRAM = extproc)
)
)
LISTENER_ABCD =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = abcd-vip)(PORT = 1521)(IP = FIRST))
(ADDRESS = (PROTOCOL = TCP)(HOST = 10........)(PORT = 1521)(IP = FIRST))
)
)
Why the public IP address is required for listener?-Yasser
Published by: YasserRACDBA on May 10, 2010 13:18
The name of the node indicates the status of the connection.
For example:
Node1 - vip:1521 (LISTEN)
This means that host node1-vip open tcp port 1521 and is listening for connections to the port. The process it takes place, it is likely that the Oracle local listener.
Example:
Node1 - vip:1521-> node1.ttn.com:64662 (ESTABLISHED)
This shows a connection established. Note that this does not show who is the client and server. It can be assumed (correctly in most cases) with the registered or well-known port is the server, and one with dynamic or private ports is the customer.
So, using this approach, the client node1.ttn.com is connected to port 1521 (registered port) on the server of node1-vip. The client uses port 64662 (private port).
The process owner is probably a dispatcher or a dedicated server process.
As far as TCP goes, there are two basic for a TCP socket States. The socket is connected to another socket- and communication socket can be made between here and somewhere else. In other words, it is a connection established between a client and a server.
A socket may also not be be connected to another socket. This Jack is created as an end of listening. There is to listen to the customers login requests.
Tags: Database
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