Remote Database Link

I have to Database set up in 2 different machine. All are having rel 9.2.0.1.0 in them. I am trying to use private fixed database link to connect form one to another(from a 3rd client machine).
say my orcale databases are:
service_name for target database: orcl_tgt.x.y
service_name for source database: orcl_source.p.q
when i create a database link in orcl_target(orcl_tgt.x.y) from a 3rd machine(9i client installed) like this:
     CREATE DATABASE LINK "L1" CONNECT TO "user_name"
     IDENTIFIED BY "pswd1"
     USING 'orcl_source.p.q'
it says link created ,but when i try to view data using the link from target
select * from xyz@L1 it says
ERROR at line 1:
ORA-12154: TNS:could not resolve service name
in our system global_names parameter is set to false in both the databases.
Can anybody suggests how to solve this?

justin is right
first check your tnsname entry
that it will work property
for that first u connect to remote machine by sqlplus
and use tnsname 'orcl_source.p.q'
i think u r not created 'orcl_source.p.q' in tnsname files--------------------------
Cause: The service name specified is not defined correctly in the TNSNAMES.ORA file.
Action: Make the following checks and correct the error:
Verify that a TNSNAMES.ORA file exists and is in the proper place and accessible. See the operating system specific manual for details on the required name and location.
Check to see that the service name exists in one of the TNSNAMES.ORA files and add it if necessary.
Make sure there are no syntax errors anywhere in the file. Particularly look for unmatched parentheses or stray characters. Any error in a TNSNAMES.ORA file makes it unusable. See the Oracle Net Services Administrator's Guide. If possible, regenerate the configuration files using the Oracle Network Manager.
hope it will help you
kuljeet pal singh

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Edited by: user501548 on 10.10.2008 02:20

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What should I do in order to resolve the following issue. Thanks.
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HI,
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Correct the problem mentioned in the preceding messages and try the
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Hi,
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So, here's my simple test.
SQL>
SQL> create table gurnish.indexes20plus ( n1 number, n2 number, n3 number, n4 number, n5 number, n6 number, n7 number,
2 n8 number, n9 number, n10 number, n11 number, n12 number, n13 number, n14 number, n15 number, n16 number,
3 n17 number, n18 number, n19 number, n20 number, n21 number, n22 number, n23 number, n24 number,
4 n25 number, n26 number, n28 number);
create index xin1 on indexes20plus (n1);
Table created.
SQL> SQL> create index xin2 on indexes20plus (n2);
create index xin3 on indexes20plus (n3);
Index created.
SQL> SQL>
Index created.
SQL> SQL> create index xin4 on indexes20plus (n4);
Index created.
SQL> SQL>
Index created.
SQL> SQL> create index xin5 on indexes20plus (n5);
create index xin6 on indexes20plus (n6);
Index created.
SQL> SQL>
Index created.
SQL> SQL> create index xin7 on indexes20plus (n7);
Index created.
SQL> SQL> create index xin8 on indexes20plus (n8);
Index created.
SQL> SQL> create index xin9 on indexes20plus (n9);
Index created.
SQL>
SQL> create index xin10 on indexes20plus (n10);
Index created.
SQL> SQL> create index xin11 on indexes20plus (n11);
create index xin12 on indexes20plus (n12);
create index xin13 on indexes20plus (n13);
Index created.
SQL> SQL>
Index created.
SQL> SQL>
Index created.
SQL> SQL> create index xin14 on indexes20plus (n14);
Index created.
SQL> SQL> create index xin15 on indexes20plus (n15);
Index created.
SQL>
SQL> create index xin16 on indexes20plus (n16);
Index created.
SQL>
SQL> create index xin17 on indexes20plus (n17);
Index created.
SQL> SQL> create index xin18 on indexes20plus (n18);
Index created.
SQL> SQL> create index xin19 on indexes20plus (n19);
Index created.
SQL> SQL> create index xin20 on indexes20plus (n20);
Index created.
SQL> SQL> create index xin21 on indexes20plus (n21);
Index created.
declare
i number;
begin
for i in 1..100
loop
dbms_random.seed(i+100);
insert into indexes20plus values (dbms_random.value(1,5),dbms_random.value(1,21),dbms_random.RANDOM, dbms_random.RANDOM,dbms_random.value(1,20),
dbms_random.value(1,4),dbms_random.value(1,6), dbms_random.value(1,7),dbms_random.value(1,9),dbms_random.value(1,10),
dbms_random.value(1,11),dbms_random.value(1,12),dbms_random.value(1,13),dbms_random.value(1,14),dbms_random.value(1,1),
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end loop;
commit;
end;
SQL> set autotrace traceonly
SQL> l
1* select * from gurnish.indexes20plus@lvoprds where n1 = 4
SQL> /
no rows selected
Execution Plan
Plan hash value: 441368878
| Id | Operation | Name | Rows | Bytes | Cost (%CPU
)| Time | Inst |
| 0 | SELECT STATEMENT REMOTE | | 1 | 351 | 1 (0
)| 00:00:01 | |
| 1 | TABLE ACCESS BY INDEX ROWID| INDEXES20PLUS | 1 | 351 | 1 (0
)| 00:00:01 | LVPRD |
|* 2 | INDEX RANGE SCAN | XIN1 | 1 | | 1 (0
)| 00:00:01 | LVPRD |
Predicate Information (identified by operation id):
2 - access("A1"."N1"=4)
Note
- fully remote statement
- dynamic sampling used for this statement
Statistics
0 recursive calls
0 db block gets
0 consistent gets
0 physical reads
0 redo size
1897 bytes sent via SQL*Net to client
481 bytes received via SQL*Net from client
1 SQL*Net roundtrips to/from client
0 sorts (memory)
0 sorts (disk)
0 rows processed
SQL> select * from gurnish.indexes20plus@lvoprds where n21 = 4;
no rows selected
Execution Plan
Plan hash value: 2929530649
| Id | Operation | Name | Rows | Bytes | Cost (%CPU
)| Time | Inst |
| 0 | SELECT STATEMENT REMOTE | | 1 | 351 | 1 (0
)| 00:00:01 | |
| 1 | TABLE ACCESS BY INDEX ROWID| INDEXES20PLUS | 1 | 351 | 1 (0
)| 00:00:01 | LVPRD |
|* 2 | INDEX RANGE SCAN | XIN21 | 1 | | 1 (0
)| 00:00:01 | LVPRD |
Predicate Information (identified by operation id):
2 - access("A1"."N21"=4)
Note
- fully remote statement
- dynamic sampling used for this statement
Statistics
1 recursive calls
0 db block gets
0 consistent gets
0 physical reads
0 redo size
1897 bytes sent via SQL*Net to client
481 bytes received via SQL*Net from client
1 SQL*Net roundtrips to/from client
0 sorts (memory)
0 sorts (disk)
0 rows processed
SQL>

Unable to access remote database object using database link

Hi all,
I have created a database link to a remote server
SQL> create database link remote_link connect to lax_dba identified by lax_dba using 'abc.corp.com';
database link created
when i am trying to access any table of lax_dba
sql> select * from laxtab@remote_link;
i am getting this Ora error
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The database server where you defined the link (not your PC) has resolved 'abc.corp.com' to a server/port/service combination using its tnsnames.ora, sqlnet.ora and possibly ldap.ora settings. You can try
tnsping abc.corp.comon the server (as ReubenC suggested) to see what it's attempting to connect to. (It's important to do this on the database server and not on your PC as they will have different tns settings etc.)
It has then found the server and found a listener running on it (so you're getting close), but that remote listener doesn't recognise the service you're asking for. It might be something like the '.com' suffix.

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I followed the instructions to create a Portal form for a remote procedure. But I am encountering the following error. Can someone advise what may be the cause?
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Failed to parse as PORTAL - (WWV-08300)
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How to execute a remote procedure in Portal using Database Link.
DESCRIPTION
This procedure assumes that you have two databases, one of which is remote, and Portal is configured in the other.
Remote Database A:
==================
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hello...
any input will welcomed... Thanks..

To create database link to connect to remote database

Hi all
I am using 10g with apex4.
My apex application is running on our server.
I need to connect to a remote server to get data from there.for that i need to create a database link from apex.
When i tried to create a database link from apex sql commands window it is showing insufficient privilages.
So i created one database link from back end but it is not accessible from apex...
can some one help me in this...
its urgent.....
thanks in advance

Hi,
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Schema need have CREATE DATABASE LINK system privilege.
Regards,
Jari
Edited by: jarola on Aug 1, 2011 3:34 PM
See documentation
http://download.oracle.com/docs/cd/E10513_01/doc/appdev.310/e10499/advnc.htm#BABBFICH

Connecting to remote database without using db links

Referred Thread:
Re: Remote DB connection without DB link
In reference to the thread above, my question goes like this:
Let's say I want to run a query from a database and use data from another database. I have the user, password, SID and port number of the other database but do not want to create a separate connection using sqlplus or connect commands.
Something like this:
SQL> show user
USER is "A"
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- create session (the schema must allow client connections to create schema sessions)
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Calling remote procedure through database link

Hi,
I have a procedure in a package with a type I delcared as follows:
Database1 :
create or replace package p1
is
TYPE dependents_rec IS RECORD (
name VARCHAR2 (80),
dob date);
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procedure proc1 (p_id in number,
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end;
On another database database2 i want to call the above procedure from within a procedure in a package that works as a wrapper package with similar structure.
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How can I call the procedure p1.proc1 over a database link ?
Thank you

Hi,
On database1:
CREATE OR REPLACE PACKAGE types_pkg is
TYPE dependents_rec IS RECORD (
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birth_date DATE,
birth_place NUMBER (3),
status NUMBER (1),
unique_id VARCHAR2 (15)
TYPE dependents IS TABLE OF dependents_rec
INDEX BY BINARY_INTEGER;
end;
CREATE OR REPLACE PACKAGE wrapper_pkg_demo
AS
PROCEDURE read_person_no (
p_person_id NUMBER,
p_dependent_info OUT types_pkg.dependents
END;
CREATE OR REPLACE PACKAGE BODY wrapper_pkg_demo
AS
PROCEDURE read_person_no (
p_person_id NUMBER,
p_dependent_info OUT types_pkg.dependents
IS
BEGIN
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END;
END;
On database 2:
CREATE OR REPLACE PACKAGE person_pkg
AS
PROCEDURE read_person_no (
p_person_id NUMBER,
p_dependent_info OUT types_pkg.dependents@database1
END;
CREATE OR REPLACE PACKAGE body person_pkg
AS
PROCEDURE read_person_no (
p_person_id NUMBER,
p_dependent_info OUT types_pkg..dependents@database1
IS
BEGIN
null;
END;
END;
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ORA-04052: error occurred when looking up remote object TYPES@MOI
ORA-00604: error occurred at recursive SQL level 1
ORA-02019: connection description for remote database not found
Noting that the database link are working properly and when compiling the package on database 2, it compile successfully
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Query a remote table with Database Links

How do database links work with ODP.NET? The following code produces an "ORA-02041: client database did not begin a transaction" error on the Fill method.
SQL (in acme instance):
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VB .NET:
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Just read running procedure on remote db???
Changed first line to
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and it works now.
That's what I get for searching the forum instead of browsing.

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