Configure tnsnames.ora

I have a 10.2g database. I noticed that some of my service names are set as servicename , some of them are servicename.world.
Can anybody tell me why? I checked my sqlnet.ora file, there is no defination of
NAMES.DEFAULT_DOMAIN = WORLD.
Thanks

Most probably, when configuring services using netca or net manager this extension was left by default.
You can get rid of it only if you are sure service name from the database is not using it.
Check the instance parameter service_names, and check if the listener declares the service names (listener.ora) as *.world.
The problem you will face when declaring a domain on the tns entry and not declaring it at the sqlnet.ora file is that you will have to name tnsentry.world every time you are willing to use this entry.
~ Madrid

Similar Messages

Best Practice to configure tnsnames.ora on client of MAA environment in 10g

Hi,
I have a MAA environment, 1 RAC Primary of 2 nodes and 1 RAC standby of 2 nodes too. I want to configure the tnsnames.ora on clients (we have many clients on each PC) and I need to configure the tnsnames.
I have read some papers but the information is not clear regarding to configure the tnsnames on clients. I just want to have only one entrie on tnsnames that I can use on clients to connect to RAC Primary and/or Standby depending on what site is primary in that moment, I was thinking in something like this:
SALES.WORLD =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = site1a)(PORT = 1521))
(ADDRESS = (PROTOCOL = TCP)(HOST = site1b)(PORT = 1521))
(ADDRESS = (PROTOCOL = TCP)(HOST = site2a)(PORT = 1521))
(ADDRESS = (PROTOCOL = TCP)(HOST = site2b)(PORT = 1521))
(LOAD_BALANCE = yes)
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = sales.world)
(FAILOVER_MODE =
(TYPE = SELECT)
(METHOD = BASIC)
(RETRIES = 180)
(DELAY = 5)
Where site1 is RAC Primary now, and site2 is standby. But in case of switchover, I want that clients recognize automatically to which site connect.
I was thinking to stop listeners on site that is not primary on that moment.
The question is if this is the best practice on this scenario?.
Thanks for your advice.
Luis

Hi Louis,
you need to setup a service with clusterware. On both sides: primary and standby.
On primary you start them. On standby the services are also configured but stopped.
In case of switchover or failover, data guard will notice clusterware to bring them up.
You need to use this service name in your clients tnsnames.
Another issue are TCP timeouts, to protect against them you use
outbount_connect_timeout in your sqlnet.ora
Also have a look at
http://www.oracle.com/technology/deploy/availability/pdf/MAA_WP_10gR2_SwitchoverFailoverBestPractices.pdf
HTH Mathias

Configuring Clients to Share Net80 Configuration (TNSNAMES.ORA)

I'd like to setup all client net80 connections to share a
TNSNAMES.ORA file. I have tried adding the regestry key
TNS_ADMIN to HKEY_CURRENT_USER|ENVIORNMENT key but
have had no success. Not sure if it should be entered as
a environment variable, I added TNS_ADMIN to
HKEY_LOCAL_MACHINE|SOFTWARE|Oracle|HOME0 and still had no
success.
The client machines are Windows 2000. Has anyone configured
this?
Any help would be appreciated.
Tammy

I found the problem... actually it was working, just not from
Oracle's Administrator Toolbar (which was what I was using to
test the configuration). Strange.
Thanks.

Configuring tnsnames.ora / listener.ora with HOST = localhost

Dear Oracle experts,
presently I'm trying to configure an Oracle installation on a Win2k server
to work with HOST = localhost entries in my tnsnames.ora and listener.ora.
I have to do that because I want to use that Oracle installation as an image
for several computers which will get different IPs and computer names.
My problem is, taht I only can configure my entries with a real IP adres (127.0.0.1 does not work ) or with the present name of the system but not with localhost or 127.0.0.1.
My listener.ora looks like below :
# listener.ora Network Configuration File: D:\oracle\product\10.1.0\Db_1\NETWORK\ADMIN\listener.ora
# Generated by Oracle configuration tools.
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SDU = 4096)
(SID_NAME = EMS)
(ORACLE_HOME = D:\oracle\product\10.1.0\Db_1)
(PRESPAWN_MAX = 10)
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = localhost )(PORT = 1521))
The listener above lead to a
ERROR - ORA-12541: TNS:no listener
if I try to connect via iSQLPlus. If I exchange HOST = localhost with HOST = mydnsname the I can connect to the computer via isqlplus.
Is there any possibility to configure the listener and tnsnames without using real IP adresses ?
Best regards,
Daniel Wetzler

Hi maran,
thanks for your answer.
i started the listener from cmd and had the output below :
C:\Documents and Settings\ECS>lsnrctl start
LSNRCTL for 32-bit Windows: Version 10.1.0.2.0 - Production on 22-MAR-2007 16:04
:32
Copyright (c) 1991, 2004, Oracle. All rights reserved.
Starting tnslsnr: please wait...
TNSLSNR for 32-bit Windows: Version 10.1.0.2.0 - Production
System parameter file is D:\oracle\product\10.1.0\Db_1\network\admin\listener.or
a
Log messages written to D:\oracle\product\10.1.0\Db_1\network\log\listener.log
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=127.0.0.1)(PORT=1521)))
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=localhost)(PORT=1521)))
STATUS of the LISTENER
Alias LISTENER
Version TNSLSNR for 32-bit Windows: Version 10.1.0.2.0 - Produ
ction
Start Date 22-MAR-2007 16:04:33
Uptime 0 days 0 hr. 0 min. 0 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Parameter File D:\oracle\product\10.1.0\Db_1\network\admin\listener.o
ra
Listener Log File D:\oracle\product\10.1.0\Db_1\network\log\listener.log
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=127.0.0.1)(PORT=1521)))
Services Summary...
Service "EMS" has 1 instance(s).
Instance "EMS", status UNKNOWN, has 1 handler(s) for this service...
The command completed successfully
C:\Documents and Settings\ECS>
In my listener.log I found the following information :
TNSLSNR for 32-bit Windows: Version 10.1.0.2.0 - Production on 22-MAR-2007 16:11:42
Copyright (c) 1991, 2004, Oracle. All rights reserved.
System parameter file is D:\oracle\product\10.1.0\Db_1\network\admin\listener.ora
Log messages written to D:\oracle\product\10.1.0\Db_1\network\log\listener.log
Trace information written to D:\oracle\product\10.1.0\Db_1\network\trace\listener.trc
Trace level is currently 0
Started with pid=1672
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=127.0.0.1)(PORT=1521)))
TIMESTAMP * CONNECT DATA [* PROTOCOL INFO] * EVENT [* SID] * RETURN CODE
22-MAR-2007 16:11:43 * (CONNECT_DATA=(CID=(PROGRAM=)(HOST=)(USER=ECS))(COMMAND=status)(ARGUMENTS=64)(SERVICE=LISTENER)(VERSION=168821248)) * status * 0
So it seems that my lister is running fine, isn't it ?
But I cannot conect to my database....
I pasted my tnsnames.ora below.
Perhabs there's a bug I didn't fins yet. But if I replace in both files t(tnsnames.ora and listener.ora the "localhost" with my local IP it works just fine...
# tnsnames.ora Network Configuration File: D:\oracle\product\10.1.0\Db_1\network\admin\tnsnames.ora
# Generated by Oracle configuration tools.
SIG =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = localhost )(PORT = 1521))
(CONNECT_DATA =
(SERVER = SHARED)
(SERVICE_NAME = SIG)
Hpe someone can help.....
Best regards,
Daniel

Can't srvctl command write tnsnames.ora file?

Hi,
I use srvctl to create a new service correctly, but I find the information of this service isn't written into tnsnames.ora file, it means, user can't connect database by directly using this service name, it's very stranger, who can tell me how to use srvctl to create a service and ensuer the information about this service can be correctly written into tnsnames.ora file?
#srvctl add service -d mm -s mx -r node1 -a node2.

Did you check tnsnames.ora for any new entries?
Yes,There are not any new entries for the new service I just created.
Check the command reference again, there is a flag to display "sample tns entries"
http://download.oracle.com/docs/cd/B19306_01/rac.102/b14197/srvctladmin.htm#i1008779
I check that documentation, and I can use that command to run in my RAC environment, the returned result is
Example client-side TNS entry for service mx:
mx = (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=db_vip)(PORT=dedicated_port
))(CONNECT_DATA=(SERVICE_NAME=mx)(FAILOVER_MODE=(TYPE=SELECT)(METHOD=BASIC
How to use this service in client or our application, must we manullay configure tnsnames.ora file?
BRs./Vinson

Editing tnsnames.ora

Hey,
I am new to this can anyone help me configure tnsnames.ora file for connecting it with Toad.
I have Oracle 10g. I have never done this before.

Hm doesn't look to me as if you realy want to learn anything:
Re: Connect Oracle with TOAD
Installing Oracle Client for Connecting TOAD
But ok...
the tnsnames.ora is in $ORACLE_HOME/network/admin
The syntax is like that:
ALIAS =
(DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = IPADRESS)(PORT = 1521))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = SID)
)You have to change the italic values.
Dim

TNSNames.ora missing ?

hi
i installed Oracle 10g recently. and since i had a patch to install, i disbled installing the startup DB. after installation was successful, i then installed the patch and everything was successful.
finally, since everything was successful, i invoked dbca and then started to created the first SID. here, when the creation started, immediately it gave an error saying that "ORA-12638:Credential retrieval failed". after googling, i found that its due to the parameter change in sqlnet.ora and hence i changed the SQLNET.AUTHENTICATION_SERVICES into (none). after this modification the database creation went smoothly and successfully i installed the db.
the problem is this.
i can access the database through sql*plus but when i tried to connect through sql navigator, it gave an error saying that the TNS name could not be resolved (something like this)
then i tried to locate the TNSnames.ora file but i the only file in the Network/admin folder was the sqlnet.ora file and the samples folder. it seems that the tnsnames,ora and the other files are missing.
can u please tell me what has happened and what can i do to get the TNS names.ora file back ??
i am new to oracle so descriptions are highly accepted :)

804253 wrote:
Hi Rajesh,
Good day to you.
I have installed the Oracle Client 10g Release 2 in the VM environment.However I could not track the file TNSNames.ora
I have tried the link provided by you, there is no Net Manager available to select. Do u have any other solutions to track the missing TNSNames.ora or alternative methods to configure TNSNames.ora?
I'm new to Oracle and need your help.
Thanks in advance.
Warmest Regards,
Sze KhinDid you try netca instead of netmgr?

Virtual address configure listener.ora and tnsnames.ora files on Solaris10

Hi,
I have installed Oracle 10g R2 on Solaris 10 U4 SPARC.
I need to configure Oracle 10g to work with Storage Foundation for Oracle v5.0.
After Oracle installation listener.ora listens on host IP address.
So I have changed to listens on the Virtual IP address. This is a requirement:
All listeners to be configured must listen to the same virtual IP address
Could you please tell what to correct to have my Oracle working correctly?
listener.ora:
-bash-3.00$ cat listener.ora
# listener.ora Network Configuration File: /export/home/u01/app/oracle/product/10.2.0/Db_1/network/admin/listener.ora
# Generated by Oracle configuration tools.
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = PLSExtProc)
(ORACLE_HOME = /export/home/u01/app/oracle/product/10.2.0/Db_1)
(PROGRAM = extproc)
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = 10.160.19.64)(PORT = 1521))
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC0))
tnsnames.ora:
-bash-3.00$ cat tnsnames.ora
# tnsnames.ora Network Configuration File: /export/home/u01/app/oracle/product/10.2.0/Db_1/network/admin/tnsnames.ora
# Generated by Oracle configuration tools.
ORCL =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = 10.160.19.64)(PORT = 1158))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = orcl)
EXTPROC_CONNECTION_DATA =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC0))
(CONNECT_DATA =
(SID = PLSExtProc)
(PRESENTATION = RO)
Also connecting by web browser http://10.160.19.64:1158/em I am not able to start listener:
Details TNS-12541: TNS:no listener
Using the command listener start it starts successfully.
Kind regards,
Daniel

The port in listener.ora nad tnsnames.ora are now the same - 1521
After this trying logining by Web page there is an error:
Error
Io exception: The Network Adapter could not establish the connection
When I run netca tool and I reconfigure listener netca change the IP address to sun3 which has 10.160.19.49. After this listener works fine and I am able to connect by Web page.
bge0 10.160.19.49 - is the base IP address
bge0:2 10.160.19.64 - is the virtual IP address
I want listener to listen on 10.160.19.64.

How to configure listener and tnsnames.ora on 10g version

how to configure listener and tnsnames.ora on 10g version

If you are on linux platform, on command prompt execute netmgr and configure listener fromt there. Or go to $oracle_home/network/admin/listner.ora write the following
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = PLSExtProc)
(ORACLE_HOME = /u01/app/oracle/product/10.2.0/db_1)
(PROGRAM = extproc)
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1))
(ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
For tnsnames.ora write the following
ORCL =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = orcl)
)

How to configure the client tnsnames.ora parameters with a MTS Server

i have modified init.ora and start my oracle
as a MTS instance.
my client tnsnames.ora is the dedicate server
model.
how can i modify it and my clent can use
MTS server.
null

Hi,
I dont think u will have to configure anything seperatley on the tnsnames.ora file to connect to a MTS Database.
I Hope i am right.
Regards,
Ganesh R

Which configuration should set in tnsnames.ora

Dear All,
Need ur help. I with zero knowledge in oracle. Now i need to conenct to Oracle Database from my window server via SQLPlus, which configuration should i set in my tnsnames.ora? A or B?
Set A
PNTP =
(DESCRIPTION =
(LOAD_BALANCE = on)
(FAILOVER=on)
(ADDRESS_LIST=
(SOURCE_ROUTE=yes)
(ADDRESS = (PROTOCOL = TCP)(HOST = Hostname1)(PORT = 1521))
(ADDRESS = (PROTOCOL = TCP)(HOST = Hostname2)(PORT = 1521)))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = pntp)
Set B
PNTP =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = Hostname1)(PORT = 1521))
(ADDRESS = (PROTOCOL = TCP)(HOST = Hostname2)(PORT = 1521))
(LOAD_BALANCE = yes)
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = pntp)
)

How can i make sure the pointer are D:\oracle\ora92\network\ADMIN and not another folder? Can check from "environment variables "? WHich part?I suggest you go back to the documentation and read.
Please look at following:
http://download.oracle.com/docs/cd/B19306_01/install.102/b14312/post_install.htm#CHDBIHEE
Then, on each client computer, configure either of the following settings:
Set the TNS_ADMIN environment variable to specify the location of the tnsnames.ora file and specify a service name from that file.
Place the tnsnames.ora file in the ORACLE_BASE\ORACLE_HOME\network\admin directory, and make sure that the ORACLE_HOME environment has been set to this Oracle home.Your tnsnames.ora file must contain the following assuming you have (n) number of nodes:
PNTP =
(DESCRIPTION =
(LOAD_BALANCE = on)
(ADDRESS_LIST=
(ADDRESS = (PROTOCOL = TCP)(HOST = Hostname1-vip)(PORT = 1521))
(ADDRESS = (PROTOCOL = TCP)(HOST = Hostname2-vip)(PORT = 1521))
(ADDRESS = (PROTOCOL = TCP)(HOST = Hostname(n)-vip)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = pntp)
)Please mark the questions as helpful and correct and close the thread as answered.
Regards.
Edited by: user11150436 on Mar 21, 2011 8:54 AM

Tnsnames.ora is not working

Hello,
In my UAT envirnment we have 3 database on IBM AIX powerPC (64-bit) all are on 10.2.0.5.0
My listener.ora and tnsnames.ora is at default location $ORACLE_HOME/network/admin/
my listener is up
$ lsnrctl status
LSNRCTL for IBM/AIX RISC System/6000: Version 10.2.0.5.0 - Production on 04-MAR-2011 11:56:08
Copyright (c) 1991, 2010, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1)))
STATUS of the LISTENER
Alias LISTENER
Version TNSLSNR for IBM/AIX RISC System/6000: Version 10.2.0.5.0 - Production
Start Date 16-FEB-2011 18:51:16
Uptime 15 days 17 hr. 4 min. 52 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Parameter File /u01/app/oracle/product/10.2.0.1/db_1/network/admin/listener.ora
Listener Log File /u01/app/oracle/product/10.2.0.1/db_1/network/log/listener.log
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=172.16.8.17)(PORT=1521)))
Services Summary...
Service "PLSExtProc" has 1 instance(s).
Instance "PLSExtProc", status UNKNOWN, has 1 handler(s) for this service...
Service "preprod" has 1 instance(s).
Instance "preprod", status UNKNOWN, has 1 handler(s) for this service...
Service "uat" has 2 instance(s).
Instance "uat", status UNKNOWN, has 1 handler(s) for this service...
Instance "uat", status READY, has 1 handler(s) for this service...
Service "uat_XPT" has 1 instance(s).
Instance "uat", status READY, has 1 handler(s) for this service...
Service "uattest" has 2 instance(s).
Instance "uattest", status UNKNOWN, has 1 handler(s) for this service...
Instance "uattest", status READY, has 1 handler(s) for this service...
Service "uattest_XPT" has 1 instance(s).
Instance "uattest", status READY, has 1 handler(s) for this service...
The command completed successfully
i can remotely connected to database but on the same server tnsping is showing following error
$ tnsping UATTEST
TNS Ping Utility for IBM/AIX RISC System/6000: Version 10.2.0.5.0 - Production on 04-MAR-2011 11:59:09
Copyright (c) 1997, 2010, Oracle. All rights reserved.
Used parameter files:
/u01/app/oracle/product/10.2.0.1/db_1/network/admin/sqlnet.ora
Used TNSNAMES adapter to resolve the alias
Attempting to contact (DESCRIPTION = (ADDRESS_LIST = (ADDRESS = (PROTOCOL = TCP)(HOST = 172.16.8.17)(PORT = 1521))) (CONNECT_DATA = (SERVICE_NAME = uat)))
TNS-12535: TNS:operation timed out
or some time
ORA-12547: TNS: lost contact
remotely all the users are connected to listener but on the same server the operation is failed
I cant connect to other database using this tnsnames.ora file
can any one help me
regards
Bhushan
Edited by: user9176407 on Mar 3, 2011 10:38 PM

user9176407 wrote:
Thanks for the reply
In My server 3 database are there there a database by service name uat also present there
I check all the configuration the entries in my tnsnames.ora is as below
PREPROD =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = 172.16.8.17)(PORT = 1521))
(CONNECT_DATA =
(SERVICE_NAME = preprod)
UAT =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = 172.16.8.17)(PORT = 1521))
(CONNECT_DATA =
(SERVICE_NAME = uat)
UATTEST =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = 172.16.8.17)(PORT = 1521))
(CONNECT_DATA =
(SERVICE_NAME = uattest)
conf_uat =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS =
(PROTOCOL = TCP)
(HOST = 172.16.8.17)
(PORT = 1521)
(CONNECT_DATA =
(SERVICE_NAME = uat)
(SID = uat)
also my listner file entries are
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = PLSExtProc)
(ORACLE_HOME = /u01/app/oracle/product/10.2.0.1/db_1)
(PROGRAM = extproc)
(SID_DESC =
(SID_NAME = uat)
(ORACLE_HOME = /u01/app/oracle/product/10.2.0.1/db_1)
(SID_DESC =
(SID_NAME = uattest)
(ORACLE_HOME = /u01/app/oracle/product/10.2.0.1/db_1)
(SID_DESC =
(SID_NAME = preprod)
(ORACLE_HOME = /u01/app/oracle/product/10.2.0.1/db_1)
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1))
(ADDRESS = (PROTOCOL = TCP)(HOST = 172.16.8.17)(PORT = 1521))
Ok, for your listener.ora file, above you have the SID_LIST and the LISTENER sections. But what is this that follows, below?
>
uat =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = 172.16.8.17)(PORT = 1528))
SID_LIST_uat =
(SID_LIST =
(SID_DESC =
(SID_NAME = configdb)
(ORACLE_HOME = /u01/app/oracle/product/10.2.0.1/db_1)
which is working file
but i have an problem in my tnsname.ora file

Creating a service ; What needs to be added to tnsnames.ora and JDBC url?

DB version: 11.2.0.2
OS platform : Solaris 10
We have a 2 node RAC.
DB name   = mbsprd
Instance1 = mbsprd1
Instance2 = mbsprd2I want Instance 1 (mbsprd1) to be used for our OLTP application and Instance 2 (mbsprd2) to be used for another application of DSS nature.
Based on the syntax
srvctl add service -d <dbname> -s <ServiceName> -r <Preferred Instance> -a <Available Instance>I am going to create 2 services
-- Creating a service called OLTP
srvctl add service -d mbsprd -s OLTP -r mbsprd1 -a mbsprd2-- Creating a service called DSS
srvctl add service -d mbsprd -s DSS -r mbsprd2 -a mbsprd1-- Starting the services
srvctl start service -d mbsprd -s OLTP
srvctl start service -d mbsprd -s DSSI guess the above steps are enough to configure a service at the server side.
I would like to know what needs to be done at the client side.
Currently the tnsnames.ora file and JDBC url used by our clients are shown below. What needs to be added to tnsnames.ora file and jdbc URL to start using services configured above?
-- SCAN based TNS entry
mbsprd =
(DESCRIPTION =
    (ADDRESS_LIST =
      (ADDRESS = (COMMUNITY = tcp.world)
        (PROTOCOL = TCP)(Host = p148149-scan.tpam.net) (Port = 36964))
    (CONNECT_DATA =
      (SERVER       = DEDICATED)
      (SERVICE_NAME = mbsprd)
      (FAILOVER_MODE=(TYPE=SELECT)(METHOD=BASIC))
-- TNS entry based on local listener
-- Instance 1
mbsprd1 =
(DESCRIPTION =
   (ADDRESS_LIST =
   (ADDRESS =(PROTOCOL = TCP)(HOST = hsolarp148-vip)(PORT = 36973))
   (CONNECT_DATA =
         (SERVICE_NAME = mbsprd)
         (INSTANCE_NAME = mbsprd1)
-- Instance 2
-- TNS entry based on local listener
mbsprd2 =
(DESCRIPTION =
   (ADDRESS_LIST =
   (ADDRESS =(PROTOCOL = TCP)(HOST = hsolarp149-vip)(PORT = 36973))
   (CONNECT_DATA =
         (SERVICE_NAME = mbsprd)
         (INSTANCE_NAME = mbsprd2)
)JDBC entry for RAC
jdbc:oracle:thin:@p148149-scan.tpam.net:36964:mbsprd -- Alternative version used by some clients because the above had 'some issues'
jdbc:oracle:thin:@(DESCRIPTION=(LOAD_BALANCE=on)(ADDRESS=(PROTOCOL=TCP)(HOST=p148149-scan.tpam.net) (PORT=36964))(CONNECT_DATA=(SERVER=DEDICATED)(SERVICE_NAME=mbsprd)(FAILOVER_MODE =(TYPE = SELECT)(METHOD = BASIC)(RETRIES = 180)(DELAY = 10))))

OLTP =
(DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = p148149-scan.tpam.net)(PORT = your_port_number))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = OLTP)
DSS =
(DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = p148149-scan.tpam.net)(PORT = your_port_number))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SERVICE_NAME = DSS)
)JDBC entry for RAC
jdbc:oracle:thin:@p148149-scan.tpam.net:36964:service_name
jdbc:oracle:thin:@new_tns_entry_description(if you would like to connect the database with particular service)
try this and let us know any issues,

How to use ODBC SQLDriverConnect() without using tnsnames.ora file

I have an ODBC application that connects to an Oracle 10g database. Currently, my SQLDriverConnect() function call uses the following connection string:
DRIVER={Oracle in OraClient10g_home1}; DBQ=MyDB.world; DBA=W; UID=foo; PWD=bar
This requires an entry in the tnsnames.ora file that looks like this:
MyDB.world =
(DESCRIPTION = (ADDRESS_LIST =
(ADDRESS =
(PROTOCOL = TCP)(Host = server1.intel.com)(Port = 1521)
(ADDRESS =
(PROTOCOL = TCP)(Host = server2.intel.com)(Port = 1521)
(ADDRESS =
(PROTOCOL = TCP)(Host = server3.intel.com)(Port = 1521)
(ADDRESS =
(PROTOCOL = TCP)(Host = server4.intel.com)(Port = 1521)
(LOAD_BALANCE = yes)
(CONNECT_DATA = (SERVER = DEDICATED)
(SERVICE_NAME = MY_SRVC))
However, I would really like to be able to connect using ODBC without having to create that entry in the tnsnames.ora file. I have tried to substitute the DBQ=MyDB.world with the entire (DESCRIPTION=..... string from the original tnsnames.ora file, but it returns the error:
ORA-12154: TNS: Could not resolve the connect identifier specified.
I have heard others are able to use sqlplus with no tnsnames.ora file and the do specify the entire (DESCRIPTION=.... string on the sqlplus connection string, but is this possible to do using the ODBC SQLDriverConnect() function? If so, do I need to use a different keyword/value pair other than DBQ=?
Any help on this would be greatly appreciated.
Thank you.

How would that work in a load balanced configuration? Take a closer look at the tnsnames.ora example I included in my original post. I have 4 ADDRESS= sections to denote 4 servers that are part of the load balanced environment.
Also, I'm not familiar with that syntax, I need to use the syntax supported by the SQLDriverConnect() API function, which looks like this:
DRIVER={Oracle in OraClient10g_home1}; DBQ=MyDB.world; DBA=W; UID=foo; PWD=bar
I don't know as SQLDriverConnect() would accept an alternative syntax. But the more important issue here is the ability to specify those 4 servers in the load balanced configuration as indicated by that tnsnames.ora entry.

TNSNAMES.ORA for Oracle database 11.1.0.7

Hi,
Im installed oracle database 11.1.0.7 ,but unable find the TNSNAMES.ORA File.Can any help on this.

Hi,
Which OS is urs ??
Normally it is available in ORACLE_HOME/network/admin.
If it is not there, then
Use NETCA to create those files.
Normally, the Network Configuration Assistant (NETCA) is started at the end of the installation process; however, if NETCA fails or you exit before completing, the tnsnames.ora and the other files will not be created. The tnsnames.ora and the other NETCA created files are not necessary for connecting to the database locally from the server.
Thanks,
Ranjith

Configure tnsnames.ora

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