Create private database link

Hi,
I am currently working on a 92080 database on HPUX RISC platform.
I have a question regarding DB link.
There is already a public database link. I want to make it private since our organaization doesnt allow public database link.
OWNER                DB_LINK                        USERNAME             HOST                           CREATED
PUBLIC               DW.EADV.NA.JNJ.COM             GTWYCOMMAPP          HCSOP17.HCSPROD2.RAR.NCSUS.JNJ 05-APR-06
                                                                         .COM
PUBLIC               EDIDB.EADV.NA.JNJ.COM          USER4DBLNK           HCSOP12                        12-APR-06
PUBLIC               RAM_MART.EADV.NA.JNJ.COM       GTWYCOMMAPP          HCSOP30.hcsprod2.rar.ncsus.jnj 04-NOV-05
                                                                         .comMy question is -> If I want to create a private database link, should we login to each application schema and create the same?
Or can we create a private database link logging in as SYS/SYSTEM. Please let me know
Thanks!

You can create database link in one schema and after that you can create public synonym ,therefore all users can use this db link.
CREATE DATABASE LINK DBN
CONNECT TO SMART IDENTIFIED BY sm
USING 'SB222'
/You can create objects like view according this dblink and create publik synonym for this
Edited by: Chinar on Dec 3, 2010 8:39 AM

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Remote procedures created on Private Database Links

How to grant access to role on the private synonym created in a schema for the remote procedure with private Database links.
We have converted the public database links to private. Plz suggest me how to access the remote procedures and
grant access to role.
Thanks a Lot in advance.
Its Urgent

I asked in general since my task was stopped because of this.
Secondly i have asked the users not specifically you. If you dont want to answer just dont answer.
Coming to the problem, There was no problem when the public database links were used. The public synonyms were created and we were able to grant access with the role.
But why not with private dblinks.

How to create a database link ?

i want to create a database link.please give mesteps

There is a chapter in the DBA Administration manual for versions 8.1, 9.2, and 10g on this topic which provide all the information you need.
You will need to choose the type of database link: global, current user, or imbedded user and if you need a public or private link.
Basically all you do is create a tnsnames.ora entry for the remote db and then create a database link (See SQL manual entry CREATE DATABASE LINK) that references the tnsnames.ora entry.
The manuals or the entire manual set can be downloaded from technet.
HTH -- Mark D Powell --

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Hello. Thank you for helping.
Is there a way to do something like this:
grant create any database link to user1 ?
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Thank you, again.
I granted create dblinks to the users/schema with the SP, but the error still occurs: Insufficient Privileges.
In order for the SP to succeed, the user who runs the SP should have permissions to create database links.The SP that is creating a public dblink is executed from another SP on another server across another dblink.
My goal is to create dblinks on all my servers from one central server, as needed in a very dynamic environment in terms of dblinks where servers are added and replaced often.
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Friends,
OS: RHEL AS 3
DB: 9iR2
database name 1 = nubul
database name 2 = test
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CraigBoyd wrote:
Hello All,
I am trying to create a database link for one of my users.
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Hope you can help me with this. Thanks!

788818 wrote:
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Hello,
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Hi,
Yes, you can create a database link to your own database. I've done it before for exactly the same reason you want to.
(By the way, I think it's a good reason. What are the alternatives?
Having different versions of code for Development and Production? Absolutely not! Terrible idea!
Using synonyms or substitution variables that are set differently in the different databases? That might be more efficient than a database link, but efficiency probably isn't such a big issue in Development.
[Conditional compilation|http://download.oracle.com/docs/cd/B28359_01/appdev.111/b28370/fundamentals.htm#sthref250]? This might be good; it has all the efficienty of the above options, with more clarity.)
Assuming you do want to stick with a database link, not all errors are caught when you create the link.
Is the Development database in the tnsnames.ora file of the Development server? Do you have other database links, either in the Development server or pointing to it, that work? What is different about the ones that work, and the one that doesn't?
Edited by: Frank Kulash on Oct 14, 2009 1:58 PM
The more I think about this, the more I agree with the earlier respondent: synonymns are a good solution for this.
To that suggestion you replied:
On this way I might use "select * from SCHEMA.table" instead of "select * from table@SCHEMA"... I looking for an option to use the second way...Actually, the suggestion was that you say:
select *
from SCHEMA_table_ptr;where schema_table_ptr is a synonym.
In Development, that synonym is defined as schema.table.
In Production, that synonym is defined as table@SCHEMA
Why are you "looking for an option to use the second way"?
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Hi All,
Greetings for the day.
Though I have seen quite a few posts but just wanted to cross-verfiy and double check hence posting.
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OS :SOLARIS SPARC 64 Bit
SQL Server Database : Sql Server 2005
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Your question is similar to the post: Oracle 11gr2 connection to Sql Server using dg4msql problem
Please visit: http://stackoverflow.com/questions/4658942/oracle-11gr2-connection-to-sql-server-using-dg4msql-problem
Answer on the website:
You seem to be using the Gateway for MySQL set-up rather than the Heterogeneous Gateway (for ODBC connections). Here is an overview of the process
On SQL Server create a database user and give it read access to the database/tables you want to read via the Oracle database link.
In the gateway home each SQL Server database you want to access should have an init.ora located in $OH/dg4msql/admin in the form initsid.ora where sid is the name of the database to be used in the link (e.g. initbob.ora), so create one
HS_FDS_CONNECT_INFO=msserver1:1234//Example_Database
HS_FDS_TRACE_LEVEL=OFF
HS_FDS_RECOVERY_ACCOUNT=RECOVER
HS_FDS_RECOVERY_PWD=RECOVER
HS_TRANSACTION_MODEL=READ_ONLY
You must now add the new sid to the listener.ora in the gateway home using an additional SID_DESC section inside the existing SID_LIST, for example
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(ORACLE_HOME=/oracle/gateway/product/11.2.0)
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(PROGRAM=dg4msql)
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You must now add the new sid in the tnsnames.ora file for the listener of each database in which you will create a link. You don't need to do this in the gateway home unless it is also a database home in which you will create a database link.
bob =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = severname.example.com)(PORT = 1690))
(CONNECT_DATA = (SID = bob))
(HS = OK)
NB: The host and port are for the gateway not for the SQL Server database
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CREATE PUBLIC DATABASE LINK bob
CONNECT TO "ms_user" IDENTIFIED BY "ms-passwd" USING 'bob';
where ms-user and ms-password are the SQL Server user you created right at the start.
Now you can test the new database link
SELECT COUNT(*) FROM "Table_Name"@bob;
Once you have this working you can alter the initsid.ora file to add parameters to suit your connection. If you do it this way you can easily add and manage many different databases via the gateway.
Hip
Edited by: 1000595 on 04:58 17-04-2013

Create private database link

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