VLD-1124: Schema and/or Database link physical configuration parameters

Hi!
The warning message:
VLD-1124: Schema and/or Database link physical configuration parameters should not be set for Table1.
Is it possible to eliminate this warning message ? Anyway , Thanks for your response!
Bye!

Hi guys,
I am facing a strange problem. The code generated for my mapping has NOT used the dblinks. My OWB version is 10.1.0.4
This is my problem in brief.
I have installed OWB newly and started to do a sample task. I created a very simple one to one table population mapping from source to the target schema. Both are in the same database.
When i generated the code for the mapping, it gave a warning 'VLD-2771: System privileges may not allow extraction from source EMP'.
When i checked the code which was generated, i couldnot see any dblinks associated with my source table( which seems strange)
CURSOR "INGRP_c" IS
SELECT
"EMP_SRC_TRG_CONN"."EMPNO" "EMPNO",
"EMP_SRC_TRG_CONN"."ENAME" "ENAME",
"EMP_SRC_TRG_CONN"."JOB" "JOB",
"EMP_SRC_TRG_CONN"."MGR" "MGR",
"EMP_SRC_TRG_CONN"."HIREDATE" "HIREDATE",
"EMP_SRC_TRG_CONN"."SAL" "SAL",
"EMP_SRC_TRG_CONN"."COMM" "COMM",
"DEPT_SRC_TRG_CONN"."DEPTNO" "DEPTNO_1",
"DEPT_SRC_TRG_CONN"."DNAME" "DNAME",
"EMP_SRC_TRG_CONN"."DEPTNO" "DEPTNO",
"DEPT_SRC_TRG_CONN"."LOC" "LOC"
FROM "SCOTT"."EMP" "EMP_SRC_TRG_CONN" ;
In brief this is the process i have done.
Source schema : SCOTT & Target schema : TRG_SCHEMA
1) I have created source (for SCOTT) and target(for TRG_SCHEMA) modules.
2) I have also created DBLinks, Locations and Connector from source to the target locations.
3) I registered both the source location and target locations.
4) Validated, Generated and Deployed the Connector from source to the target.
I was unable to trace the error. Did i miss anything in the configuration? or during the installation of OWB.
Though it is a very old post, i hope someone can help me out here.
Thanks in Advance,
Sri

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i have created a database link in my producation database as following
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IDENTIFIED BY <P/W>
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oracle version 9.0.2.8
OS : Windows 2003 EE R2 SP2
Using oracle failsafe 3.3.4 with windows cluster
Problem Description :
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PL/SQL
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Hi guys,
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zephyr223 wrote:
Hi guys,
Here's my question. I need to give a contractor Select rights on tables located in two schemas located on two different servers. One server is dev and one is prod. Let's say we have schema user: EMPLOYEE on dev and schema user: DEPARTMENT on prod. The outside contractor needs select rights on all tables in DEPARTMENT schema but only needs select on a few tables ( 4 to be exact) from EMPLOYEE schema.
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Create database link to dev server so user TEST can access EMPLOYEE schema.
How do i go about limiting the user TEST via the database link to only view the 4 tables from EMPLOYEE instead of all teh tables? Only grant them access to those four tables from EMPLOYEE. You have to explicitly grant privileges anyways, and since there is no GRANT SELECT ON <SCHEMA> ability it should not be that difficult.
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HTH!
HTH!

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My DBA connects as user1 to db1 and successfully queries over database link db2.
[oracle@linux19 ODA]$ sqlplus user1/****@db1
SQL*Plus: Release 11.2.0.3.0 Production on Fri Apr 12 07:39:49 2013
Copyright (c) 1982, 2011, Oracle. All rights reserved.
Connected to:
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Copyright (c) 1982, 2010, Oracle. All rights reserved.
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What are some possible causes for the different results?
What additional information might I supply to help troubleshoot?
Thanks very much.
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Edited by: enquad on Apr 12, 2013 2:56 PM
changed "database link db1" to "database link db2" per comments by SB
Edited by: enquad on Apr 12, 2013 3:00 PM
Changed "user" to "OS user" in subject for clarity

enquad wrote:
Sorry gentlemen and SB, but my question is still not answered. It is a new question, which I have not found answered elsewhere.
To summarize:
SB97025 informs me that db1 is not a database link, but I never said that it was. It is the second database (anonymized as "db2") that is connected to through the database link "db2.mycompany.net".
SB97025 also wonders intriguingly if my DBA and I are we really connecting to the same database when we each connect to user1 on db1. Perhaps the Oracle server and my PC have TNSNAMES.ORA files that lead us to different databases for the same TNS alias? I do not believe this is the case, because my DBA created that user1 and that database link in the db1 database specifically for the purpose of doing this test and I see that same link when I connect to user1 on db1. Unless my DBA is spoofing me by creating user1 in two different databases - only one of which contains a working dblink named db2.mycompany.net - just for the purpose of throwing me off, I would have to conclude that he and I are actually connecting to the same database.There is no reason to "believe" (or not) that "this is the case". The entire point of SB's comment on that was to get you to verify. President Reagan famously said "trust but verify". He never worked as a DBA. I say "don't trust, just verify".
Obviously something is different. And at this point the most likely and easiest to confirm is that you and your DBA really are connecting to the same database, on the same host server, using the same link. And at this point all we really have is to trust your DBAs statement.
>
Ed Stevens reminds me that db1 is acting as a client to db2 and so the solutions to the ORA-12154 are the same as for any client connection as listed on his blog (which I had already read), none of which solve my problem. Rembember, the DBA can use the database link, so by whatever means the TNS lookup is happening when he uses it, the correct connection description is being found. The question is not "why does this stinkin' database link not work"? It does work for the DBA.
Pierre wants to make sure I know that it is the Oracle server's TNSNAMES file that is the important thing, not my client's TNSNAMES file, which is true but not relevant to my problem and I was never so naive. He also says that I could try creating a database link by including the full TNS entry in the USING string, which does work as I had already mentioned in my original post.
Amar asks if my DBA can: sqlplus username/password@db2.
The answer is yes. The dba can use SQL*Plus to connect to db2 from the server hosting db1 and can connect to db1 from the server hosting db2. There is almost nothing my DBA cannot do.
None of the posters addressed the key information in my post, which was the different result my DBA and I get when using the same database link in the same schema on the same database. That AND the fact that my DBA is logged on to Linux Oracle serve as user "oracle" and I am logged in to my PC. Why should it matter to a database link which computer is running SQL*Plus or who the OS user is?
Also the GLOBAL_NAMES parameter is set to FALSE.
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ORA-02020 too many database links

Hello,
I'm getting the ORA-02020 too many database links error in my Apex application. This error occurs when I run an interactive report in a page. There are 21 pages and 7 database links in the application. Each page has one interactive report that references one database link in the region source.
The database links are referenced in each page as follows: database link1 (page 1); database link2 (pages 2 and 3); database link3 (pages 4-7), database link4 (pages 8-15); database link5 (pages 16-18); database link6 (pages 19); and database link7 (pages 20-21). Each database link is referenced to separate schemas in one remote Oracle database.
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Process Text: execute immediate 'ALTER SESSION CLOSE DATABASE LINK LINK1';
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When I run the application now, the ORA-02081: database link is not open error appears.
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Joel,
Thank you for your quick response. For clarification purposes, could you provide samples for 1) issuing the CLOSE DATABASE LINK and catching the exception; and 2) querying from V$DBLINK prior to issuing the CLOSE DATABASE LINK from the Shared Components > Logic > Application Processes?
Lets assume the following query with a database link in the region source is referenced for Page 1.
Page 1 - Employee Listing
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select ename, job, hiredate
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Click on Shared Components> Logic > Application Processes > Create >
Name: CLOSE_LINK1
Sequence: 1
Point: On Load: Before Header (page template header)
Type: PL/SQL Anonymous Block
Process Text: execute immediate 'ALTER SESSION CLOSE DATABASE LINK LINK1';
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1. Log in SQL*Plus as SYS
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2. In Apex, goto Shared Components> Logic > Application Processes and add the following queries in the Process Text:
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3. Catch the exception???
Your assistance is greatly appreciated. :8}
Ms. H

DATABASE LINK NOT WORKING OR FETCHING QUERYIES

Hello,
Oracle Version : 9.2.0.1
O/S : Win XP SP2
Sir
I have to dbs (orcl and reccat) I want to create a database link from reccat to orcl. I have performed following steps and getting error in fetching query through database link.
SQL> Create database link foo connect to current_user using 'ORCL';
Database link created.
SQL> select * from scott.emp@foo;
select * from scott.emp@foo
*+
ERROR at line 1:
ORA-28030: Server encountered problems accessing LDAP directory service
My Tnsnames.ora is as :
TNSNAMES.ORA
ORCL =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = laptop)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = orcl)
INST1_HTTP =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = laptop)(PORT = 1521))
(CONNECT_DATA =
(SERVER = SHARED)
(SERVICE_NAME = MODOSE)
(PRESENTATION = http://HRService)
EXTPROC_CONNECTION_DATA =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC0))
(CONNECT_DATA =
(SID = PLSExtProc)
(PRESENTATION = RO)
STANDBY =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = laptop)(PORT = 1521))
(CONNECT_DATA =
(SERVICE_NAME = standby)
RECCAT =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = laptop)(PORT = 1521))
(CONNECT_DATA =
(SERVICE_NAME = reccat)
RECCAT_LAPTOP =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = laptop)(PORT = 1521))
(CONNECT_DATA =
(SID = reccat)
(SERVER = DEDICATED)
Listener.ora
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = laptop)(PORT = 1521))
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = PLSExtProc)
(ORACLE_HOME = g:\oracle\ora92)
(PROGRAM = extproc)
(SID_DESC =
(GLOBAL_DBNAME = orcl)
(ORACLE_HOME = g:\oracle\ora92)
(SID_NAME = orcl)
(SID_DESC =
(GLOBAL_DBNAME = standby)
(ORACLE_HOME = g:\oracle\ora92)
(SID_NAME = standby)
(SID_DESC =
(GLOBAL_DBNAME = reccat)
(ORACLE_HOME = f:\rec_cat)
(SID_NAME = reccat)
STANDBY =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = laptop)(PORT = 1521))
Pl. guide me where is the problem and how to rectify it.
Regards
Neeraj

Which portion of the documentation is that quote from ?
See this "+CURRENT_USER database links connect as a global user. A local user can connect as a global user in the context of a stored procedure--without storing the global user's password in a link definition.+ " at the 9.2 documentation that was provided to you earlier in this thread
http://download-uk.oracle.com/docs/cd/A97630_01/server.920/a96521/users.htm#17355
and "+CURRENT_USER database links connect as a global user. A local user can connect as a global user in the context of a stored procedure, that is, without storing the global user password in a link definition+." in the 10.2 documentation
http://68.142.116.70/docs/cd/B19306_01/network.102/b14266/admnauth.htm#i1006269
and the CURRENT_USER clause and the "Defining a CURRENT_USER Database Link" Example of the CREATE DATABASE LINK documentation in 10.2
http://68.142.116.70/docs/cd/B19306_01/server.102/b14200/statements_5005.htm#i2061505
Hemant K Chitale
http://hemantoracledba.blogspot.com

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Thanks
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Hi Jack,
Context:
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Creating a database link to another schema in the same database

Hello,
I'm trying to create a database link to another schema in the same database. It was created without errors, but when I try to use it I receive "ORA-12154: TNS:could not resolve the connect identifier specified" message...
I'm trying to do it because on my production enviroment the databases are separated, so there I can use database links without problem, but in my development environment it's all in one database separated by schemas...
So I'm trying to simulate the same system to not need to rewrite the query every time I move from development to production environment.
Any ideas?
Thanks

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"?
If you think that people reading the code should realize that the query is being done via a database link (at least in Production), then add a comment.

Database Links and Triggers

Hello altogether,
I'm not sure if I am in the right topic here, if not please excuse!
I got the following problem:
My system consists of two parts - one calculation part P1, and one output part P2. Both parts have their own Oracle DBMS. The calculation part P1 calculates a lot of data and replicates this data to the database of the output part P2.
I created a database link from P1 to P2.
Now I used triggers to replicate the data from tables on P1 side to tables on P2 side.
Problem:
This works fine, as long as the number of inserted or updated entries is low. If it increases, I get the error "Too many database links in use", and everything is stuck. I guess this is because too many triggers fire in parallel.
Question:
Is there a possibility to restrict the number of triggers executed in parallel (some kind of semaphor to serialize on), or can multiple triggers share the same database link?
Thanks a lot for your help!
Bye,
Daniel

Besides from using normal oracle replication I would check your triggers.
Do they fire and access the DB for each row? May change this to statement level.
Or switch from some synchonous process (immediatly update the target database) to some asynchronous process (mark the records that needs to be updated/changed, every half an hour do the change).
3rd version? DO you really need two databases? Consider 2 separate schemas on one database instance.

Physical Schema and logical schema

Hi,
When creating the data server in the topology corresponding to the appropriate technology we are creating a physical schema. But then why do we need to create logical schema. Is it created for execution of the interface? And can multiple physical schemas be mapped to same logical schema?

Hi
Physical schema represents the actual connection to the data source or data target. Logical schema represents the logical name associated to that source or target.
One logical schema can be associated with multiple physical schema along with context, i.e. one logical schema is associated with different physical schema using different context.
It can be understood with following example:
You have 3 environments: Dev, QA, Prod, each having different database servers as DB1, DB2, DB3, respectively. Similarly we have 3 context corresponding to Dev, QA and Prod. You create logical schema with name DB_source
Now you associate physical DB servers to logical schema (DB_source) for each context:
DEV: DB1
QA: DB2
PROD: DB3
Now when u develop ODI interfaces, you use one context DEV which associates DB_source to DB1. While mentioning context for execution, keep it as "Execution". This means, whatever context you choose during execution, corresponding physical DBs will be used.
Thus if you change the execution context, corresponding physical schema will be used during execution.
Let me know if you have further questions !!

VLD-1124: Schema and/or Database link physical configuration parameters

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