5
Protocol Address Configuration

A network object is identified by a protocol address. When a connection is made, the client and the receiver of the request (listener, Oracle Names server, or Oracle Connection Manager) are configured with identical protocol addresses.

The client uses this address to send the connection request to a particular network object location, and the recipient "listens" for requests on this address, and grants a connection based on its address information matching the client information.

This chapter contains these topics:

• ADDRESSes and ADDRESS_LISTs

• Protocol Parameters

• Recommended Port Numbers

• Port Number Limitations

ADDRESSes and ADDRESS_LISTs

Protocol address are comprised of ADDRESS and ADDRESS_LIST elements.

---

ADDRESS

Purpose

The ADDRESS parameter defines a protocol address.

Embed this parameter under an ADDRESS_LIST or DESCRIPTION parameter. A DESCRIPTION is used in a tnsnames.ora or a listener.ora file.

See Also: Each protocol has its own required parameters needed in the address, as explained in "Protocol Parameters"

Example

(ADDRESS=
 (PROTOCOL=tcp)
 (HOST=sales-server)
 (PORT=1521))

---

ADDRESS_LIST

Purpose

The ADDRESS_LIST parameter defines a list of protocol addresses that share common characteristics.

Example

 (ADDRESS_LIST=
  (LOAD_BALANCE=on)
  (ADDRESS=
   (PROTOCOL=tcp)
   (HOST=sales-server)
   (PORT=1521))
  (ADDRESS=
   (PROTOCOL=tcp)
   (HOST=hr-server)
   (PORT=1521)))
 (ADDRESS_LIST=
  (ADDRESS=
   (PROTOCOL=tcp)
   (HOST=finance-server)
   (PORT=1521)))

Protocol Parameters

The listener, Oracle Names server and Oracle Connection Manager are identified by protocol addresses. The table below describes the parameters used by the supported Oracle protocols:

Table 5-1 Protocol-Specific Parameters

Protocol	Parameter	Description
All	PROTOCOL	Specify the protocol. LU6.2--Use lu62 as the value. Named Pipes--Use nmp as the value. TCP/IP--Use tcp as the value. VI--Use vi as the value. Example: (PROTOCOL=tcp)
IPC	KEY	Specify a way of identifying the server. Oracle Corporation recommends using the name of the service Example: (KEY=sales)
Named Pipes	SERVER	Specify the name of the Oracle server computer. Example: (SERVER=sales)
Named Pipes	PIPE	Specify the pipe name you used to connect to the database server (the same PIPE keyword you specified on server with Named Pipes). This name can be any arbitrary name. Example: (server=dbpipe0)
LU6.2	LU_NAME	Specify the Oracle server name. This name must be a fully-qualified name. Example: (LU_NAME=NWLU001)
LU6.2	LLU or LOCAL_LU	Specify the local LU alias. This parameter cannot be used with LLU_NAME. Example: (LLU=SENDLU)
LU6.2	LLU_NAME or LOCAL_LU_NAME	Specify the local LU name; must be a fully qualified name. This parameter cannot be used with LLU. Example: (LLU_NAME=NWLU001)
LU6.2	MODE or MDN	Specify the log mode entry of the LU6.2 network; the value is typically ORAPLU62. Example: (MODE=ORAPLU62)
LU6.2	PLU or PARTNER_LU_NAME	Specify the Oracle server name; must be a fully qualified name.This parameter cannot be used with PLU_LA. Example: (PARTNER_LU_NAME="ORACLE.TNSORAK")
LU6.2	PLU_LA or PARTNER_LU_LOCAL_ALIAS	Specify the partner LU alias of the Oracle server. This parameter cannot be used with PLU. Example: (PLU_LA=NWLU002)
LU6.2	TP_NAME or TPN	Specify the transaction program name of the host computer. This parameter is not required for a connection to an MVS host. Example: (TPN=RECVTP)
TCP/IP TCP/IP with SSL VI	HOST	Specify the host name or IP address of the computer. VI protocol addresses do not support IP addresses. Example: (HOST=sales-server) (HOST=144.25.186.204)
TCP/IP TCP/IP with SSL	PORT	Specify the listening port number. Example: (PORT=1521) See Also: "Recommended Port Numbers"
VI	DISC	Specify the discriminator number. The DISC is equivalent to the TCP/IP PORT parameter. The number can be any number up to 16 digits. Oracle Corporation recommends using 1521 for the discriminator number. 1521 will not conflict with a TCP/IP protocol addresses that uses port 1521. Example: (DISC=1521)

Recommended Port Numbers

Table 5-2 lists the recommends the port numbers.

Table 5-2 Recommended Port Numbers

Port	Description
1521	Default listening port for client connections to the listener. In future releases, this port number may change to the officially registered port number of 2483 for TCP/IP and 2484 for TCP/IP with SSL.
1575	Default and officially registered listening port for client connections to an Oracle Names server using TCP/IP or TCP/IP with SSL
1630	Default and officially registered listening port for client connections to Oracle Connection Manager
1830	Default and officially registered listening port for administrative commands to Oracle Connection Manager
2481	Recommended and officially registered listening port for client connections to Oracle9i JVM option using TCP/IP
2482	Recommended and officially registered listening port for client connections to Oracle9i JVM using TCP/IP with SSL
2484	Recommended and officially registered listening port for client connections to the listener using TCP/IP with SSL

Port Number Limitations

Oracle Corporation allows port numbers from 1 to 65535. Port numbers below 1024 are reserved for use by privileged processes on many operating systems.

If you configure the listener to use port number below 1024 on an operating system that has this limitation, you must change the ownership of the listener executable (tnslsnr) to root and run it as root. The tnslsnr executable is located in $ORACLE_HOME\bin. The instructions to do this are operating system specific. After the listener has been started, you can administer it with the Listener Control utility.