Database link creation

Question

Hi i want to access the data from production to test
let the production named as naren and other one as naren1
this link has been created in naren
create database link test
connect to naren
identified by naren
using 'test'
conn naren1/naren1;
i want to access one of the table from naren
select * from emp@test
ora-02019 connection description not found
is it the problem of priviliges or tnsnames

Answer 1

First make sure you have tns name entry for prod in tnsnames.ora
When you create the database link like below,
CREATE DATABASE LINK dblink_name CONNECT TO  remote_username IDENTIFIED BY  remote_password
USING 'tns_service_name';The tns_service name is the tnsname for PROD not TEST.
Say if your tnsnames.ora file look like this for your PROD connection, You need to use the service_name value for the 'tns_service_name' above. In the below case it is 'ganesh'
GANESH=
  (DESCRIPTION=
    (ADDRESS=
      (PROTOCOL=TCP)
      (HOST=GANESH)
      (PORT=1521)
    (CONNECT_DATA=
      (SERVER=dedicated)
      (SERVICE_NAME=ganesh)
  )G.