Error while creating the view from one instance to another instance

Question

Hi Experts
I want to Create a view which reside in one instance for example xxx Instance . I want to create the same view which reside in xxx instance to another instance for example YYY Instance How to acheive this ?
I tried desc the View take the view script from XXX instance and copied the view script to YYY instance when I compiled Iam getting an Error
For Example My view in XXX Instance
CREATE OR REPLACE FORCE VIEW xxx.sample
First_name,
last_name
as
     select "F_NAME",
             "L_NAME"
     FROM  EMP;When try to copy and compile the same view in my YYY Instance
i am getting error
ORA: table or view does not exist
Advance Thanks
AT

Answer 1

A.T wrote:
Hi Experts ,
Thanks For all your valuable information I amTrying Of DB Link i think so
As per My understanding If wrong anywhere please advice me
Here Instance is Like : One DB 10g divided into several Instance like (test , devlopement , production Instance)
Now hope i ll make my req clear .
Coming to my reqirement
the actual table EMP is in xxi.TEST (Here xxi => Schema and test is an Instance )
I want to create the view which is based on by table EMP which in my test instance to devoplment instance
For example xxo.development (here xxo => Schema and development is an Instance )
Need to access the xxi schema in Test Instance How can I create a DB Link please share your ideas and advice me
Advance Thanks
ATIt's still not at all clear, but let me outline what I think you are after
Given a database, ORCL_A
In database ORCL_A we have a schema, HALFTRACK
User HALFTRACK has a table, MYSTUFF
Given a database, ORCL_B
In database ORCL_B we have a user GREENBRASS
User GREENBRASS needs to be able to query the table HALFTRACK.MYSTUFF.
In database ORCL_B, as user GREENBRASS
create database link mylink
connect to halftrack identified by halftracks_pswd
using ORCL_A;
select * from mytable@mylink;The db link defines a connection specification to ORCL_A, using the credentials of a user on ORCL_A. The target of the USING clause in the link definition must be an entry in the tnsames.ora file on the server hosting database ORCL_B.
When querying through the link, database ORCL_B is simply acting as a client to ORCL_A, no different that a sqlplus session on ORACL_B's server. As far as ORCL_A is concerned, ORCL_B is just another client requesting a connection, connecting with the credentials defined in the link definition.