How to use database link

OS in both systems is linux. database oracle 10g
how to connect two databases present in other locations;
that is sitting at place A i should be able to access database at B

Hi Mate;
If you make google, you can see what is dblink&how you can use it&what is usage of dblink etc. etc. wiht many good oracle article and some good oracle blog.
Please check this search
Regard
Helios

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How to use database link in from6i?

I can use database link in sql plus,but i can't use it in forms6i,why? thanks

Don't know why.
What I always do is create a synonym on the local database which points (through the db link) to the object on the other database.
Regards,
Meine

How to use database link to create table in other database?

e.g., java jdbc is connected to the database A.
i want to create one table (Table1)in database B, and then insert data into Table1 select ....from Table2 which is in database A.
i used the create database link (database name) connect to (database) indentified by .....
but ...i got the sqlException as i wrote before.
Thanks again.

http://forum.java.sun.com/thread.jspa?threadID=656868&messageID=3860293#3860293

How to Execute a Remote Procedure in Portal using Database Link

Hi,
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?
Failed to execute - Missing string(create_package_body) language(us) domain (wwv) sub_domain (wwv_builder) (WWV-04300)
ORA-04020: deadlock detected while trying to lock object PUBLIC.PORTLET_SCHEMA (WWV-11230)
Failed to parse as PORTAL - (WWV-08300)
PURPOSE
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:
==================
1) Create a procedure as follows: Create or Replace PROCEDURE SCOTT.ADD_TWO_VALUES ( v_one IN NUMBER, v_two IN NUMBER, v_result OUT NUMBER) as begin v_result :=v_one+v_two; end; 2) Grant execute privileges to PUBLIC on the procedure.
Database B (where Portal is configured): ========================================
1) Create a public database link and choose to connect as a specific user (say SYSTEM). By default, in an Oracle 8i database, the "global_names" parameter in initSID.ora (or init.ora) file is set to "true". This Global Naming parameter enforces that a dblink has the same name as the database it connects to. Therefore, if the remote global database (A) name is "ora8.acme.com" then the database link should also be named as "ora8.acme.com".
2) Create a synonym for the procedure in Database A. Make sure you fully qualify the procedure name in the remote database (like SCOTT.ADD_TWO_VALUES).
3) Create a dynamic page to execute the procedure. The ORACLE tags in the dynamic page will look similar to the following: <ORACLE> DECLARE v_total NUMBER; BEGIN ADD_TWO_VALUES(:v_one,:v_two, v_total); htp.p('The total is => '); htp.p('<input type="TEXT" VALUE='||v_total||'>'); htp.para; htp.anchor('http://<machine.domain:port#>/pls/portal30/SCOTT.DYN_ADD_TWO_VALUES.show_parms', 'Re-Execute Procedure'); END; </ORACLE>
4) Portal does not have an option to create a form based on a synonym. Therefore, if you want to create a form instead of a dynamic page, create a wrapper procedure and then create a form based on this procedure. For example: Create or Replace PROCEDURE PORTAL30.ADD_TWO_VALUES_PR ( v_one IN NUMBER, v_two IN NUMBER, v_total OUT NUMBER) as begin add_two_values(v_one, v_two, v_total); end;
5) Grant execute privileges to PUBLIC on the procedure.

hello...
any input will welcomed... Thanks..

How to improve database link performance?

Hello all,
We use db links to do DML operations on remote databases. For OLTP applications we are facing performance problems for transactions dependent on data on remote database.
For legal and business reasons we cannot state all the data locally.
Could anybody suggest how to improve database links performance or suggest methods/procedures/techniques to enhance speed of OLTP applications going against remote databases ?
Thanks
Sky

AQ is as reliable as Oracle-- the guarantees about delivery of queued messages are the same as the guarantees about committed transactions (i.e. ACID). AQ is designed for asynchronous operation, though. If you are batching transactions, it sounds like you are already doing some sort of asynchronous operations-- I've generally found AQ a lot easier to administer & maintain than rolling your own batching system.
If you want to tune the Oracle side of things, you'll need to explain more about the system(s) involved here. Architecture, data flow, operations that involve the dblink, etc. If you're not comfortable posting that sort of information to a public forum, feel free to send me mail directly [email protected]
As an aside, I'm interested in how you can legally pull data from the remote system to display to your users but that you can't legally cache that data in your system via replication. Sounds like an odd constraint.
Justin
Distributed Database Consulting, Inc.
http://www.ddbcinc.com/askDDBC

TNS-12666 error occures when using database link

When I am trying to use database link
defined in my database the following error occures:
TNS-12666 Dedicated server: outbound transport protocol different from inbound.
In documentation is stated to resolve such an error to
specify the same protocol in the SQL*Net connect string or alias for the outbound connection as that used for the inbound connection.
I have in tnsnames.ora defined network service name
by which I can connect to such a database by SQL*Plus
without any problems, why can I not do such a thing
via database link?
Thanks a lot for advise, ...

Could you change the following entry in your 'sqlnet.ora' file and try?
SQLNET.AUTHENTICATION_SERVICES = (NONE)

How to use database look up table function in xsl mapping

Can anybody tell me how to use database look up table function while mapping xsl between 2 nodes.
I have an XML file coming in and depending on one of XML elements we need to decide which further path to take. But, using this XML element, we need to query database table, get metadata and accordingly take appropriate path. I have written lookup function which returns metadata value.
Now, the issue is how do I pass the XML element valu as input to look up function? When I tried to drag it to the input node of lookup function, it throws an error like "Maximum number of parameters exceeded"
Thanks,

If the lookup table is always going to remain the same (e.g. a character generator or something similar) you can place the values in a 2D array constant on your diagram, with the input value as one column, the equivalent as the other. When you need to perform the lookup you use an index array to return all the values in the "input column", search it using "search 1D array" and use the resulting index number to index the other column's data. If the values may change, then it would probably be best to load an array control with your equivalent values from a file.
P.M.
Putnam
Certified LabVIEW Developer
Senior Test Engineer
Currently using LV 6.1-LabVIEW 2012, RT8.5
LabVIEW Champion

How to use Database views in XI

Hi Folks,
Any idea about how to use Database views for sending and receiving messages in XI ?
Regards,

Farooq,
My doubt is do i have work in the same fashion as if i am working on a Database Table...?
For Ex :
Creating Source and Target Data structure for JDBC adapter in the same format....etc
Regards.

Adding user to the oracle database using database link - is it possible?

Hi, i wolud like to manage my databases using one client. I easilly operate on my distriubuted tables but i have problem with creating users in distribiuted database. Is it possible to create users in distributed database using database links? or it have to be done locally using some stored procedures or sth similar?

The SQL syntax of the CREATE USER statement doesn't support DB links, the only way to do it would be with stored procedures. There might be an Oracle SP for that or for generic remote execution of SQL, but I'm not familiar with such.

How to create database link from oracle to sql server

Please help with how to create database link from oracle to sql server
Best regards,
Vishal

Please help with how to create database link from oracle to sql server
Best regards,
Vishal
Hi Vishal,
I found a lof of information regarding how to create a database link from Oracle to SQL Server, please see:
https://www.google.co.in/?gws_rd=cr&ei=vd3XUvGFO8TgkAXqlYCADg#q=how+to+create+database+link+from+oracle+to+sql+server
We discuss SQL Server related issue in this forum. If you have any more question regarding Oracle, please post it in Oracle communities forum for better support.
Regards,
Elvis Long
TechNet Community Support

How to create database link between oracle9i database and oracle10g

How to create database link between oracle9i database and oracle10g
oracle9i database name "Prod" windows server 2003 ( 172.x.x.x)
oracle10g database name "TEST" sun solaris 9 (165.x.x.x.x)
Please help me on this

For connections between 10.2 and 9.2 the 9.2 end MUST be at 9.2.0.4 or higher. Connections between 10.2 and 9.2.0.1, 9.2.0.2 or 9.2.0.3 are not supported.
Connections between 10.2 and 9.0.1 was never been supported.
Cheers !!!!
Bhupinder

How to create links and how to use that links to go to other pages?

my question is....how to create links...i mean by using make link option.....when we do right click on a word,etc in the design view.....and my other question is.....how to use that links to go to other pages.....i mean when i click on a link...it takes me to another web page.....

Please do not post the same subject to more than one forum.

How can i get data from another database SQL Server use database link from

I have a database link from Oracle connect to SQL Server database with user cdit connect default database NorthWind.How can I get data from another database(this database in this SQL Server use this database link)?

hi,
u should see following documentation:
Oracle9i Heterogeneous Connectivity Administrator's Guide
Release 1 (9.0.1)
Part Number A88789_01
in it u just go to chapter no. 4 (using the gateway),,u'll find ur answer there.
regards
umar

How to create & use database links

i have 2 databases (oracle 8.1.6) and (oracle8.1.5)
i want to call a function of one d/b from another
i think this is possible via databse links.
how do i go about creating and using them
can someone guide me to a site or post an example .
what all changes do i need to make in my configuration settings of the databases
null

Yes, you can do this with database links.
Please see: http://otn.oracle.com/docs/products/oracle8i/doc_library/817_doc/server.817/a76960/ds_admin.htm#22393
null

How to fetch,update,insert the data using database link on diff. servers

I am using two oracle server.
1st) Oracle 9i ( Server1 )
2nd) Oracle 10g ( Server2 )
3) Forms 6i
I have created a database link on Server 1 for connecting to Server 2.
I written a piece of code which will be executed in Forms 6i and is connected to Server1.
The piece of code brings the data from SErver2 via cursor and I try to insert / update the relevant records
in my Server1 database users.
The Insert/Update runs sucessfully but at the time of commit I get the following errors
in Forms ORA-01041:internal error. hostdef does not exist.
Then it forcefully rollback the data and come out of the application.
contact :email-id : [email protected]

Suggest you test your code from sqlplus before running from forms.
Start by testing a simple "select sysdate from dual@<database link>;" then test select from application_table@<database link> then test the insert/update code. After it works from sqlplus, then try it from forms.

How to use database link

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