1. Basic Oracle Net Services Client-Side Configuration
Supinfo Oracle Lab. 4
Basic Oracle Net Services Client-Side Configuration

2. After completing this lesson, you should be able to do the following:
Objectives
After completing this lesson, you should be able to
do the following:
Describe the difference between host naming and local service name resolution
Use Oracle Net Configuration Assistant to configure:
Host Naming method
Local naming method
Net service names
Perform simple connection troubleshooting

3. Clients can connect to a server using a host name if:
Host Naming
Clients can connect to a server using a host name if:
You are connecting to an Oracle database service using Oracle Net Services Client software
Your client and server are connecting over a TCP/IP protocol
Host names are resolved through an IP address translation mechanism such as DNS or a local /etc/hosts file
No advanced features like Connection Manager or security options are used

4. Host Naming Client Side
Server
Client
TCP/IP
TRACE_LEVEL_CLIENT = OFF
sqlnet.authentication_services = (NTS)
names.directory_path = (HOSTNAME)
sqlnet.ora
listener.ora

5. Host Naming Server Side
Client
Server
1521
TCP/IP
SID_LIST_LISTENER = (SID_LIST =
(SID_DESC =
(GLOBAL_DBNAME = stc-sun02.us.oracle.com)
(ORACLE_HOME = /u03/ora9i/rel12)
(SID_NAME = TEST)
sqlnet.ora
listener.ora

6. Select Host Name Method

7. Host Naming Method
Check the sqlnet.ora file

8. Local Naming
Client
Server
sqlnet.ora
tnsnames.ora
listener.ora

9. Oracle Net Configuration Assistant

10. Choosing Local Naming

11. Configuring Local Net Service Names

12. Working with Net Service Names

13. Specify the Oracle Database Version

14. Database Service Name

15. Network Protocol

16. Host Name and Listener Port

17. Testing the Connection

18. Connection Test Result
TNSPING

19. Net Service Name

20. Save the Net Service Name

21. tnsnames.ora MY_SERVICE.US.ORACLE.COM = (DESCRIPTION = (ADDRESS_LIST =
# TNSNAMES.ORA Network Configuration File:/u03/ora9i/rel12/network/admin/tnsnames.ora
# Generated by Oracle configuration tools.
MY_SERVICE.US.ORACLE.COM =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = stc-sun02.us.oracle.com)(PORT = 1521)) )
(CONNECT_DATA =
(SERVICE_NAME = TEST.us.oracle.com)

22. sqlnet.ora
# SQLNET.ORA Network Configuration File: /u03/ora9i/rel12/network/admin/sqlnet.ora
# Generated by Oracle configuration tools.
NAMES.DEFAULT_DOMAIN = us.oracle.com
NAMES.DIRECTORY_PATH= (TNSNAMES, HOSTNAME)
SQLNET.EXPIRE_TIME=0
sqlplus
SQL*Plus: Release Beta on Tue Feb 27 10:11:
(c) Copyright 2000 Oracle Corporation. All rights reserved.
Connected to:
Oracle9i Enterprise Edition Release Beta
JServer Release Beta
SQL>

23. Troubleshooting the Client Side
The following error codes are related to problems on the client side:
ORA “TNS:could not resolve service name”
ORA “TNS:could not find path to destination”
ORA “TNS:unable to connect to destination”
ORA “TNS:illegal ADDRESS parameters”
ORA “TNS:no listener”

24. In this lesson, you should have learned how to:
Summary
In this lesson, you should have learned how to:
Describe the difference between host naming and local service name resolution
Use Oracle Net Configuration Assistant to configure:
Local naming method
Net service names
Perform simple connection troubleshooting

25. This practice covers the following topics:
Practice 4 Overview
This practice covers the following topics:
Configuration of Local Naming
Configuration net service names
Testing the configuration