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What is host string? [message #112018] Tue, 22 March 2005 08:01 Go to next message
shounakbhattacharya
Messages: 7
Registered: March 2005
Location: India
Junior Member

Hello Sir,

Can anyone tell me what is the basic concept of the Host String?

Why we need to mention the host string while installing Oracle database?

It would be very kind if anyone can mail the answer at:
om_shrihari@yahoo.com
Re: What is host string? [message #112022 is a reply to message #112018] Tue, 22 March 2005 08:33 Go to previous message
Mahesh Rajendran
Messages: 10621
Registered: March 2002
Location: oracleDocoVille
Senior Member
Account Moderator
-- Host string is the name you assign for tns COnnectivity in tnsnames.ora
-- these entries typically identify the machine and portnumber and sid of the database you
-- are trying to connect.
-- for example i am using these entries in tnsnames.ora
-- here 'mutation' i have named the hoststring as mutation
-- i can name anything i want

bash-2.03$ tail -7  tnsnames.ora
mutation =
  (DESCRIPTION =
        (ADDRESS_LIST =
        (ADDRESS = (PROTOCOL = TCP)(HOST = myhost )(PORT = 1521)))
        (CONNECT_DATA =
        (SERVER = DEDICATED)
        (SERVICE_NAME = mutation))))

-- 
-- if the client and database are in same machine, you dont need a hoststring.
--

bash-2.03$ sqlplus mag/mag

SQL*Plus: Release 9.2.0.4.0 - Production on Tue Mar 22 08:24:34 2005

Copyright (c) 1982, 2002, Oracle Corporation.  All rights reserved.


Connected to:
Oracle9i Enterprise Edition Release 9.2.0.4.0 - 64bit Production
With the Partitioning option
JServer Release 9.2.0.4.0 - Production

mag@mutation_mutation > exit
Disconnected from Oracle9i Enterprise Edition Release 9.2.0.4.0 - 64bit Production
With the Partitioning option
JServer Release 9.2.0.4.0 - Production


-- 
-- if you intend to use the hoststring ( for a local database or remote database)
-- you should use it like this.
-- by this your sql cleint will talk to the database identified by hoststring.

bash-2.03$ sqlplus mag/mag@mutation

SQL*Plus: Release 9.2.0.4.0 - Production on Tue Mar 22 08:24:54 2005

Copyright (c) 1982, 2002, Oracle Corporation.  All rights reserved.


Connected to:
Oracle9i Enterprise Edition Release 9.2.0.4.0 - 64bit Production
With the Partitioning option
JServer Release 9.2.0.4.0 - Production

mag@mutation_mutation > exit
Disconnected from Oracle9i Enterprise Edition Release 9.2.0.4.0 - 64bit Production
With the Partitioning option
JServer Release 9.2.0.4.0 - Production
bash-2.03$
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