Database Links - Objects Unviewable

Oracle SQL Developer 1.1 Patch 2
When I connect to a database with my schema, I can see all my objects in the database, however, when I try looking at objects that I have access to in a different database through a database link...no objects show up. The database links are present in the database that I am connecting too, but I am unable to view other objects that I have access to through the database link? Is this a bug or do I not have the connection setup correctly?

The best that you can get with the current functionality is to list the synonyms you have for the objects across the database link, assuming that you have created synonyms.

Similar Messages

How to access the LOB objects through database links??????????????

How to access the LOB objects through database links??????????????

Hi
See:
http://asktom.oracle.com/pls/asktom/f?p=100:11:0::::P11_QUESTION_ID:52297289480186
http://asktom.oracle.com/pls/asktom/f?p=100:11:0::::P11_QUESTION_ID:5322964030684
And you also might want to get a new keyboard, your '?' seems to be stucked....

Can database link get metadata location when import database objects ?

I used database link to connect remote database . but i couldn't use it to get metadata location when i import database objects in OWB. OWB required me to create a new location which is diffirent from database link. I couldn't see a location, its type is database link. Anyone suggest me a answer ?
Edited by: hungsao on Oct 17, 2012 9:28 PM

Thank David Allen !
i can't see locations, that have type being database link from location's list in metadata location but i can see them from data locations.
When i add new location A ,its type isn't database link then i can see it ( location A) from metadata location, data locations
And when i view data from table imported , i get this error : " Data location not specified or does not currently support data viewing. Check if this object's owning module is configured with a location that support data viewing"
Please help me

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
ORA-12514: TNS:listener does not currently know of service requested in connect
I need your help please to solve this issue
Thanks n Regards
Laxman

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.

Custom report listing database links

I'm trying to determine what tables/views in the EM12c repository contain database link information (if any), so I can create a custom report using it. Has anyone come across an EM schema description or know how to determine what objects/queries are behind a page in EM? If the data isn't centralized in the EM schema, I recognize I could create a Group and run a query against DB_DB_LINKS to generate a link report for all the databases. Is that a better way to do it? I'm open to additional suggestions or tips, since I'm new to the custom reporting features ... (and not trying to reinvent the wheel here). Thanks.

There is no table in em repository database that contains db link information for database targets. The way to get this info is create a dblink in your em repository database for each database target then create plsql package that connect to each target over dblink and writes the info into a table in em repository table. You could also just create a sql job from em and run against each database target.
If you need help with the plsql let me know I have several of these in my em to extract specific data I need from each db target.

PL/SQL :ORA-04052 with Database link

i have created a database link in my producation database as following
CREATE PUBLIC DATABASE LINK <NAME>
CONNECT TO <USER>
IDENTIFIED BY <P/W>
USING <CONNECT STRING OF TARGET DATABASE
oracle version 9.0.2.8
OS : Windows 2003 EE R2 SP2
Using oracle failsafe 3.3.4 with windows cluster
Problem Description :
whenever i run my pl/sql procecdure to pull the data from the target database i get the following error
ERROR at line 3
ORA-06550:line 3 column 2
PL/SQL : ORA-04052: error occured when looking up remote object _<SCHEMA>.<TABLE>@<DATABASE LINKE NAME>_
ORA-00604 : ERROR occured at recursive SQL level 1
ORA-03106 : fatal tow-task communication protocol error
ORA-02063: preceding line from <DATABASE LINK NAME>
I have tested the same way in the test environment the same oracle version as well the OS but without oracle failsafe and windows cluster
the script goes smoothly with out any errors.
i have google and checked the OTN for all available solutions but still nothing its not getting throw
i will be very thankful for your replys and solutions
any farther clarification i am ready
thanks in advance

Hi,
This forum is for issues connecting to non-Oracle databases. As the problem is using PL/SQL to connect to another Oracle database then it would be better to post a thread in the PL/SQL forum -
PL/SQL
If you are trying to connect to a non-Oracle database then please give us the details of which non-Oracle database and the software you are trying to use to connect.
Regards,
Mike

Report over database link error

Good morning all.
I have a database link LINKA from USERA on LOCALSERVER to USERB on REMOTESERVER.
(create database link LINKA connect to USERB identified by mypassword using validtns)
In USERC on REMOTESERVER I have a TABLEX, with grant all on TABLEX to USERB on REMOTESERVER.
In USERB on REMOTESERVER I have a view TABLEXV, select * from USERC.TABLEX
From USERA on LOCALSERVER I can select * from TABLEXV@LINKA. In fact I can insert/update/delete tablexv from USERA.
I also have a view TABLEXV on USERA, select * from TABLEXV@LINKA. I can also select/insert/update/delete from USERA.TABLEXV.
So far so good - all working as expected.
Then, my APEX app on LOCALSERVER, interactive report, parsing schema USERA, querying TABLEXV, I get the following:
when "Exclude Link Column", I get the error "The requested URL /pls/apex/f was not found on server.
when "Link to Single Row View", report displays correctly.
when "Link to Custom Target", I get the error "The requested URL /pls/apex/f was not found on server.
When I run the select * from TABLEXV as a regular report (i.e. not interactive), I also get the error.
So the only time I get the report displayed correctly is using IR and "Link to Single Row View".
However, clicking on the link (for Single Row View) I get "The requested URL /pls/apex/wwv_flow.show was not found on this server.".
To summarize:
- accessing table via view over database link
- works outside of apex without issue
- inside only works when Link to Single Row View set
- But clicking on link fails
I could live with just having the Link to Singe Row View option if I could disable displaying of the icon so that the user cant click on it.
APEX 3.2.00.27
EE Database - 10.2.0.3 (yes I know out of support)
Remote EE Database - 10.2.0.5
Real object names replaced to protect the innocent!
Anyone got any clues?
I have used remote tables many times in my APEX applications and never had this issue.
Thanks,
Rob @ very confused .com

Good morning all.
I have a database link LINKA from USERA on LOCALSERVER to USERB on REMOTESERVER.
(create database link LINKA connect to USERB identified by mypassword using validtns)
In USERC on REMOTESERVER I have a TABLEX, with grant all on TABLEX to USERB on REMOTESERVER.
In USERB on REMOTESERVER I have a view TABLEXV, select * from USERC.TABLEX
From USERA on LOCALSERVER I can select * from TABLEXV@LINKA. In fact I can insert/update/delete tablexv from USERA.
I also have a view TABLEXV on USERA, select * from TABLEXV@LINKA. I can also select/insert/update/delete from USERA.TABLEXV.
So far so good - all working as expected.
Then, my APEX app on LOCALSERVER, interactive report, parsing schema USERA, querying TABLEXV, I get the following:
when "Exclude Link Column", I get the error "The requested URL /pls/apex/f was not found on server.
when "Link to Single Row View", report displays correctly.
when "Link to Custom Target", I get the error "The requested URL /pls/apex/f was not found on server.
When I run the select * from TABLEXV as a regular report (i.e. not interactive), I also get the error.
So the only time I get the report displayed correctly is using IR and "Link to Single Row View".
However, clicking on the link (for Single Row View) I get "The requested URL /pls/apex/wwv_flow.show was not found on this server.".
To summarize:
- accessing table via view over database link
- works outside of apex without issue
- inside only works when Link to Single Row View set
- But clicking on link fails
I could live with just having the Link to Singe Row View option if I could disable displaying of the icon so that the user cant click on it.
APEX 3.2.00.27
EE Database - 10.2.0.3 (yes I know out of support)
Remote EE Database - 10.2.0.5
Real object names replaced to protect the innocent!
Anyone got any clues?
I have used remote tables many times in my APEX applications and never had this issue.
Thanks,
Rob @ very confused .com

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..

Using database links in a plsql page process

I am trying to use a database link in a pl/sql page process.
It works fine when I use the link name in the plsql like this:
BEGIN
SELECT
CARD_ID
into
:P12_HDR_CARD_NUMBER
from     [email protected];
But the link name will be coming from a page item (P12_DBLINK) populated as follows:
select db_link d, db_link r from user_db_links;
I have tried the following and it's not working:
DECLARE
l_link VARCHAR2(30);
BEGIN
l_link := :P12_DBLINK;
SELECT
CARD_ID
into
:P12_HDR_CARD_NUMBER
from     fusion.EXM_CC_COMPANY_ACCOUNTS@l_link;
this gives me:
ORA-04052: error occurred when looking up remote object FUSION.EXM_CC_COMPANY_ACCOUNTS@L_LINK.WORLD ORA-00604: error occurred at recursive SQL level 3 ORA-02019: connection description for remote database not found
I thought that maybe the link name was getting appended with .WORLD automatically but the link name already has .WORLD at the end. I tried stripping that off first but the error is the same.
Is there some synatx for this that will work for this? Will I need to use dynamic sql?
Any suggestions are most appreciated.
thanks,
john

Hi John,
check the following example to use the execute immediate statement for your purpose
sql - Variable for Database Link Name - Stack Overflow
let me know if this answers your query in the current thread

Creating a new folder using a Database Link

I'm trying to create a new folder from another database with Discoverer Administrator. The schema that I'm using is the same on each database but when I select the other database using the database link, Discoverer Administrator will get all the user accounts on the other database but if that user exists on the default database I will only see the objects owned for that user on the default database. If I select a user that is only on the remote database I will see the objects from the remote database. Is this a Bug? I was able to do this using Disco Admin 9.0.4 and EUL 5.02 on an Oracle 8i database. I just migrated my EUL to an Oracle 10g database using EUL 5.1.1 and Disco Admin 10.1.2.

Yes this a bug, Bug No. 4324352 &Note:459996.1
You follow this workaround
After the Folder creation
1. Choose Folder Properties (right-click on Folder)
2. Change database from <default database> to <DBLINK>
Thanks
Mohamed

ORA-04054 : using variable substitution for the database link name

Hi,
I need to use variable substitution for the database link name.
Here is my command :
declare
GET VARCHAR2(50);
begin
select OIA_GET_DESIGNATION into GET from INFODRI.OMA_IN_ARTICLES;
for rec in (select * from [email protected]_GET_DESIGNATION)
LOOP
dbms_output.put_line('TEN_CODE vaut : '||rec.ten_code);
END LOOP;
exception
WHEN OTHERS THEN
DBMS_OUTPUT.PUT_LINE('ERREUR ORACLE DETECTEE : '||rec.OIR_CUR);
DBMS_OUTPUT.PUT_LINE('Message Erreur : '||SUBSTR(SQLERRM,1,245));
:crd := -1;
end;
When I run this programm, I receive the error :
ORA-04054: database link REC.OIA_GET_DESIGNATION does not exist
When I replace :
for rec in (select * from [email protected]_GET_DESIGNATION)
by :
for rec in (execute immediate 'select * from tensions@'||rec.OIA_GET_DESIGNATION)
I receive the error :
PLS-00103 : Encountered the symbol "IMMEDIATE" while parsing.
What can I do to resolv my problem ?
Regards,
Rachel

What is the name of the DB Link and the name of the object you are selecting
from?
I find it easier to create a view on the remote object then use that in selects.
e.g,
Link Name = MyLink
Object_name = Addr_Loc
create or replace VIEW Rem_Addr_Loc AS
select * from addr_loc@mylink;
In the code I then use the view
begin
for C_Rec in (select * from Rem_Addr_loc)
loop
dbms_output.put_line('Rec: '|| C_Rec.Col1);
end loop;
end;

Database links in APEX - Inconsistent

I have just set up a database link to our main Oracle DB from an APEX DB using the object browser in APEX
The link works fine for retrieving data in some circumstances, a report is displayed with no problems and dynamic lookup lists work fine.
However when I create a form and include an "Automated Row Fetch" there is a "PLSQL invalid error". My guess is there is some problem with privileges, I have little experience with this so was hoping for some help
Regards
- Sol

Sol,
I believe you can create a local view on the remote table and build the form on that view. See this and similar posts for hints: Use a database link in an Automated Row Fetch process? .
Scott

How to use object collection with linked objects

Hi,I'm using VS2005 Crystal reports in a c# client app (server has database, but client does not have!). So the use of the objects transfered to the client seemed to me a good solution for showing reports on the client. The objects mostly link to several other objects (properties of type <type> or properties of type [] <type>) and the links are correctly configured in database assistant.But: Whenever using one of the linked fields, all of the main fields will never show up in the report.So, what is the correct way of showing a master / detail report using linked object collections??? (A small test sample app can be provided upon request) TIABP

What database and connection type are you using? Are you connecting the report directly to the database, or trying to assign the datasource to object data?
It sounds like you might be trying to use a linked list, collection or other C# construct to pass your data in. This currently isn't supported by the Crystal Reports SDK. You can use a DataSet or a DataTable, and possibly also an IDataReader depending on which version of Crystal Reports you're referencing in your project. Of course you can also connect directly to the database, even if the database isn't on the same machine as the application.
The way to show master records with detail information is through the use of subreports and linked subreport parameters. Linked subreports take their parameter value from a record in the main report, so that only the data appropriate to that master record is displayed. The guys over in the [report design|SAP Crystal Reports; forum can help you out with this if you have questions on the specifics.

OWB-OWF - Process Flow Deployment - Database Link

Hello there,
This post is basically related to my problem with Process Flow deployment.
Could someone please shed some light on the following:
When we create a Process Flow, during this process OWF creates a Database Link. For some reason, this link is not functional unless I remove the part after "." in that defines the "HOST" in the DB Link definition. How do I know it is not functional - I know because following query does not work:
select * from [email protected]@WB_LK_WF_PKG
Here is the link definition:
ORIGINAL:
create database link OWB92TRG.US.ORACLE.COM@WB_LK_WF_PKG
connect to RR
identified by "<pwd>"
using '(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(HOST=CENTENNI-2077E4.CENTENNIALCOLLEGE.CA)(PORT=1521)))(CONNECT_DATA=(SERVICE_NAME=OWB92TRG)))'
MODIFIED (it works - above query runs OK):
create database link OWB92TRG.US.ORACLE.COM@WB_LK_WF_PKG
connect to RR
identified by "<pwd>"
using '(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(HOST=CENTENNI-2077E4)(PORT=1521)))(CONNECT_DATA=(SERVICE_NAME=OWB92TRG)))'
My second question is "using what userid/pwd should this link should have been created? Should it use "Runtime Repository Owner" or "OWB Repository Owner" or "Runtime Access User" or "OWF_MGR"?
No matter what userid I use, it works when I run the query but I always get following error when I try to deploy the "Process Flows" in OWB:
RPE-02085: Failed to test wb_rti_workflow_util.initialize through deployed Workflow Database Link OWB92TRG.US.ORACLE.COM@WB_LK_WF_PKG2. Please check that "EXECUTE ANY PROCEDURE" privilege is set and that the OWB Runtime is available.
- ORA-04052: error occurred when looking up remote object [email protected]@WB_LK_WF_PKG2
ORA-12545: Connect failed because target host or object does not exist
I have already granted the "EXECUTE ANY PROCEDURE" to OWF_MGR. I am not sure, though, what is meant by the "and that the OWB Runtime is available" part of the error message above.
I have also tried to fix this by running the "catrpc.sql" script but it did not help either.
I am stuck on this step for past few days. I would highly appreciate help in fixing this problem. Here is the configuration I am using:
o Source database : Oracle 9i (9.2) on my local PC
o Target database : Oracle 9i (9.2) on my local PC
o OWB 9i
o OWF 2.6.2
o OWB and OWF repositories are on the TARGET database
I am able to successfully deploy and run my MAPPINGs.
TIA,
Amer

Hello Oracle support,
Should I open a TAR to get this problem resolved?
Regards,
Amer

Persistent Layer Error Message: ORA-01729 database link name expected

Hi,
I've done a series of loads from DB2 into Oracle, initially importing the database objects from DB2 and Oracle, then creating the mappings, deploying and executing. It all worked and I had no problems. For some reason now whenever I tried to import a new Database Object (table) from the DB2 I enter the password, test it and it successfully connects but then I get the error message on a popup box:
SQL Exception
Persistent Layer Error: SQL Exception
Class Name: CacheMediator
Method Name: getSQLResult
Persistent Layer Error Message: ORA-01729 database link name expected
If I create a new location for the same database it works and I can import new objects. The only difference I can think from the initial imports is that I’ve moved the repository from one server to another. Might be the case where some information got corrupted in the metadata.
Has anyone seen this kind of problem before? Can you please help me out with this issue?
Thanks in advance for your help.
Regards,
Leo

I found it.When I look at the db links there is something missing.When I correct it everything works fine.

Database Links - Objects Unviewable

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