Error in Creating a Database Link

I am trying to create a database link in SQL Workshop but unavailbe to create one because of the error below:
Create Database Link Failed.
ORA-00933: SQL command not properly ended
Hope you can help me with this. Thanks!

788818 wrote:
I am trying to create a database link in SQL Workshop but unavailbe to create one because of the error below:
Create Database Link Failed.
ORA-00933: SQL command not properly ended
Hope you can help me with this. Thanks!Not really, because the error message you have posted generally relates to a syntax or typing error and you haven't posted any other information. We need version of the DB and the text of what you are trying to do. But before you post that, have you tried the documentation?
Regards
Andre

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ERROR WHILE CREATING A DATABASE LINK USING HETEROGENEOUS SERVICES

I'm creating a database link with the Oracle Dataware Builder, and i get the following error:
Probando...
Fallo.
SQL Exception
Error del repositorio: Excepción SQL.
Nombre de la Clase: CacheMediator.
Nombre del Método: getDDEntryFromDB.
Mensaje de Error del Repositorio: ORA-28500: connection from ORACLE to a non-Oracle system returned this message:
[Generic Connectivity Using ODBC][Informix][Informix ODBC Driver][Informix]Incorrect password or user [email protected] is not known on the database server. (SQL State: 28000; SQL Code: -951)
ORA-02063: preceding 2 lines from PRUEBA_SEH
As you can see i'm using heterogeneus services to connect to a informix database. ALTIADM is a valid user for that database, i don't send my ip address 192.168.0.62, but the error says "[email protected] is not known in the database server". how can i solve it?????

Right places to ask this question are
Heterogeneous Connectivity
Warehouse Builder

ERROR WHILE CREATING A DATABASE LINK TO INFORMIX

I'm creating a database link with the Oracle Dataware Builder, and i get the following error:
Probando...
Fallo.
SQL Exception
Error del repositorio: Excepción SQL.
Nombre de la Clase: CacheMediator.
Nombre del Método: getDDEntryFromDB.
Mensaje de Error del Repositorio: ORA-28500: connection from ORACLE to a non-Oracle system returned this message:
[Generic Connectivity Using ODBC][Informix][Informix ODBC Driver][Informix]Incorrect password or user [email protected] is not known on the database server. (SQL State: 28000; SQL Code: -951)
ORA-02063: preceding 2 lines from PRUEBA_SEH
As you can see i'm using heterogeneus services to connect to a informix database. ALTIADM is a valid user for that database, i don't send my ip address 192.168.0.62, but the error says "[email protected] is not known in the database server". how can i solve it?????

Right places to ask this question are
Heterogeneous Connectivity
Warehouse Builder

APP-RG-09518: An error occurred while creating a database link

Hi All,
While creating a database link in Oracle EBS from one instance to another instance for transferring FSG reports
Go to Any GL Setup responsibility...Setup>System>Database links > Create new database link
Prior to the above...below steps should be done on the server.
1.grant create database link to <apps.user>; (on db server)
2.source tns entry should be in destination tns file and destination tns entry in source tns file. (check tnsping after entry)
3.*make sure destination tns entry of 8.0.6 oracle home should be in source tns file* (Because we are creating db link for the application)
4.Run the Program FSG Report.
Regards,
Harish Muramshetty.

Hi,
I have solved the issue as below:
This error was started when I install a software which I have made myself and it uses sql server compact edition 3.5.
I saw when I manually replaced the sql related files from "C:\Program Files (x86)\Microsoft SQL Server Compact Edition\v3.5" with the files which my software setup had "version 3.5.5386.0" then the error started. And if copy back the latest version 3.5.8080.0
then it disappear. So use latest sql files in your software too.
My software was replacing the the latest files with older version.
Muhammad Arshad Awan

A question about CREATE PUBLIC DATABASE LINK and ORA-12154 error

Dear all,
I have a problem about public database link creation and I would appreciate if you could kindly give me a hand. I have the following connection parameters in my
tnsnames.ora file:
DGPAPROD.WORLD =
     (DESCRIPTION =
       (ADDRESS_LIST =
        (ADDRESS = (COMMUNITY=tcp.world)
          (PROTOCOL=TCP)(HOST=ORASR001)(PORT=1521)
       (CONNECT_DATA = (SID = DGPAPROD))
...Having the above mentioned parameters I can connect to this remote database directly in a SQL*Plus shell:
$ sqlplus username/[email protected] works pretty well and the connection is established without any problem.
Now, what I would like to do is to create a public database link to this remote database in order to avoid the user/connection switching for viewing the
content of this database. I proceeded according to the syntax indicated in the Oracle online documentation:
http://download.oracle.com/docs/cd/B28359_01/server.111/b28286/statements_5005.htm#SQLRF01205
Therefore I run the following in order to create a public database link
CREATE PUBLIC DATABASE LINK SR001_dblink CONNECT TO user IDENTIFIED BY password USING 'DGPAPROD.WORLD';Apparently there is no error and the link is created successfully. However it cannot resolve the remote host and whenever I run the following query
(myenterprise is the name of a table in that remote database)
SELECT *
FROM myenterprise@SR001_dblink
ERROR at line 1:
ORA-12154: TNS:could not resolve the connect identifier specifiedWhat causes this problem?
Thanks in advance,
Kind Regards,
Dariyoosh

spajdy wrote:
You must have defined DGPAPROD.WORLD in tnsnames.oar on server where you DB is runnig.Hello there,
Thanks a lot for this nice solution. In fact I had to add the connection parameters into the tnsnames.ora file of the server on which the link was created (not the tnsnames.ora of my oracle client stored on the localhost)
After a bit googling I found another solution that allows to create the database link:
CREATE PUBLIC DATABASE LINK SR001_dblink CONNECT TO user IDENTIFIED BY password USING '(DESCRIPTION = (ADDRESS_LIST = (ADDRESS = (COMMUNITY=tcp.world)
(PROTOCOL=TCP)(HOST=ip_adresse)(PORT=1521)))(CONNECT_DATA = (SID = GPAPROD)))';Thanks a lot for your help!
Kind Regards,
Dariyoosh
Edited by: dariyoosh on 18 nov. 2009 07:15

Not able to create a database link using the database gateway of oracle 11g

HI,
While trying to create a database link to SQL server from Oracle ,using the database gateway provided with 11g, i am getting the following error while making use of it in selecting columns from tables :
Error starting at line 1 in command:
select * from test1@dblink
Error at Command Line:1 Column:20
Error report:
SQL Error: ORA-28513: internal error in heterogeneous remote agent
ORA-02063: preceding line from DBLINK
These are the steps i have followed for setting up:
1.Ran the set up for the Database gateway.and mentioned the SQL server name and database .ALos set up a listener.
2. Added the following in the Listener.ora of Oraclehome 11/NETWORK/ADMIN:
LISTENER_SQL_FCD =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST =localhost) (PORT = 1541)
SID_LIST_LISTENER_SQL_FCD =
(SID_LIST =
(SID_DESC =
(SID_NAME=dg4msql)
(ORACLE_HOME= D:\app\20537\product\11.1.0\db_3)
(PROGRAM=dg4msql)
3.Added the following in tnsnames.ora inOracle home/NETWORK/ADMIN:
dg4msql=
(DESCRIPTION=
(ADDRESS=(PROTOCOL=tcp)(HOST=localhost)(PORT=1541))
(CONNECT_DATA=(SID=dg4msql))
(HS=OK)
4. Following is the entry in initdg4msql.ora in C:\product\11.1.0\tg_5\dg4msql\admin:
HS_FDS_CONNECT_INFO=10.148.45.242:1433//SalesDemo
HS_FDS_TRACE_LEVEL=DEBUG
HS_FDS_RECOVERY_ACCOUNT=RECOVER
HS_FDS_RECOVERY_PWD=RECOVER
5. Created the database link :
create database link dblink
connect to "sa" identified by "<pswd>"
using 'dg4msql'
On running :select * from test1@dblink i get the following error:
Error starting at line 1 in command:
select * from test1@dblink
Error at Command Line:1 Column:20
Error report:
SQL Error: ORA-28513: internal error in heterogeneous remote agent
ORA-02063: preceding line from DBLINK
Is there any issue with the set or definition that I get the above error?

What is the version of the Oracle database in which you have specified/and use the database link?
If it is for example 10.2.0.3.0 you need to apply the mandatory patch for RDBMS bug 5965763 first before being able to use an 11g gateway. Have a look at MetaLink note 457808.1 for details about this patch.
Regards,
Ed

How to Create Public database link in oracle 9i?

Friends,
OS: RHEL AS 3
DB: 9iR2
database name 1 = nubul
database name 2 = test
in the 'nubul' database server using system user.
i created a database link to connect the 'test' database
sql> create public database link test using 'test';
database link created.
then i logged in as normal user....
sql> select count(*) from employee@test
Error at line 1:
ORA-12154: TNS: could not resolve service name
where i am making mistake?
i gave the linkname as my remote database name.
am i have to make any entry in the tnsnames.ora?
thanks & regards

You have to remember that when you access a dblink, the database where the link is defined is acting as a client to the database to which the link points ... exactly the same as if you you were using sqlplus on the machine hosting the db where the link is defined. In other words, given:
Host 'Host-src', with database 'db-src', with a dblink 'lk_target'
Host 'host-trgt', with database 'db-trgt'
When you connect to db-src and access lk-target, db-src is now acting as a client to db-trgt. Exactly as if you had opened sqlplus on host-src and connected directly to db-trgt. So, given the above scenario
host-src$> sqlplus scott/tiger@db-src
sql> select * from emp@lk_target;when you execute that SELECT to the link, the same tns considerations are in effect as if you had
host-src$> sqlplus scott/tiger@db-trgtThe same tnsnames.ora entry, on the source machine, is required for both.

Creating a Database link for a user

Hello All,
I am trying to create a database link for one of my users.
When I create it as sysdba the link gets created in the SYS schema which tells me that my syntax is working/fine.
But when I ALTER my SESSION and set my CURRENT_SCHEMA = <USER_NAME> I get ORA-00990: missing or invalid privilege
So I tried granting the user CREATE DATABASE LINK, CREATE PUBLIC DATABASE LINK, and DROP PUBLIC DATABASE LINK.
Same error.
Any ideas what I am missing?
Thanks,
Craig

CraigBoyd wrote:
Hello All,
I am trying to create a database link for one of my users.
When I create it as sysdba the link gets created in the SYS schema which tells me that my syntax is working/fine.
But when I ALTER my SESSION and set my CURRENT_SCHEMA = <USER_NAME> I get ORA-00990: missing or invalid privilege
So I tried granting the user CREATE DATABASE LINK, CREATE PUBLIC DATABASE LINK, and DROP PUBLIC DATABASE LINK.
Same error.
Any ideas what I am missing?
Thanks,
Craigyou need to create a new session after the GRANT was issued.

ORA-01017 error while using a database link

Hi all,
I have a TNS entry as below
HOME=
(DESCRIPTION=
(ADDRESS=(PROTOCOL=tcp)(HOST=10.66.205.110)(PORT=1521))
(CONNECT_DATA=(SID=HOME))
I have created a database link as
create public database link link92.com using 'HOME'.
This was created successfully and an entry was made in all_db_links table.
However if i try connecting to a table in the remote database...for example
select * from emp@link92;
I am receiving an error ORA-01017(Invalid username passwd).
Would appreciate if somebody could help me out.
Thank you

It is not that the Database Link is "PUBLIC" that makes it use the current username/password.
It is that the Database Link has been created without specifying a " CONNECT TO username IDENTIFIED BY password " that makes the DBLink behave as a "current user database link" using the current username/password to connect to the remote database.
You can have a PUBLIC database link that uses a "CONNECT TO username IDENTIFIED BY password" such that all connections use the same remote username and password.
You can also have "private" (ie not PUBLIC) database link that does not specify a "CONNECT TO username IDENTIFIED BY password" which becomes a "current user [owner] database link".

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.

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.

Problem creating a database link

Hi,
I tried to create a database link, but it doesn't work. When I connect to the database via SQL*Plus or SQL Developer, the entries in the tnsnames.ora work.
create database link DBOPBWS2.BAG connect to demo identified by demo
using 'DBOPBWS2.BAG';
Entry in tnsnames.ora:
DBOPBWS2.BAG =
(DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST =serv01.server.spub-systeme.de)(PORT = 1485))
    (CONNECT_DATA =
      (SERVER = DEDICATED)
      (SID = DBOPBWS2)
Entry in sqlnet.ora:
NAMES.DIRECTORY_PATH= (TNSNAMES, EZCONNECT)
select * from [email protected];
Error:
ORA-12154: TNS: Angegebener Connect Identifier konnte nicht aufgelöst werden
12154. 00000 - "TNS:could not resolve the connect identifier specified"
What is wrong with the datbase link?
Please help me
Siegwin

Hi,
You could also "skip" the TNSNAMES use :Scott@my11g SQL>create database link DBOPBWS2.BAG connect to demo identified by demo
using '(DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST =serv01.server.spub-systeme.de)(PORT = 1485)) (CONNECT_DATA = (SERVER = DEDICATED) (SID = DBOPBWS2)))'
Database link created.

Grant create any database link to user1 ?

Hello. Thank you for helping.
Is there a way to do something like this:
grant create any database link to user1 ?
I tried to create a database link from a procedure, but got an error: Insufficient Privileges.
Any suggestions greatly appreciated.

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.
Do I need to grant create dblink on the external servers as well?
DDL should be run once at application installation time & stored source code version system.
It is bad code to create DB objects on the fly from stored procedures, IMO.I realize this is true under normal circumstances, but in this case there are zero security concerns -- all that matters is efficiency in terms of the amount of work required to create dblinks on all my servers (several dozen in a private research environment with only one user).
Any more suggestions are greatly appreciated.

3.2 to 4.1 Upgrade - Error Handling for Unavailable Database Links

Hi,
I'm having a 3.2 -> 4.1 upgrade issue related to error handling for failed database links.
I have a conditional Exists button on a page that has a SQL query to linked tables. However, for the 10 minutes every day where the target of the database link is getting a cold backup, the query fails. In the old 3.2 apex I simply got an error inside the region where the button is located but otherwise the page was still visible:
"Invalid exists/not exists condition: ORA-02068: following severe error from MYDBLINK ORA-01034: ORACLE not available ORA-27101: shared memory realm does not exist"
However, in apex 4.1.0.00.32 I get the following unhandled error, and clicking "OK" takes me to the edit page when logged in as developer.
i.e., the page can't be run at all while the database links are failing in this one region.
Error Error processing condition.
ORA-12518: TNS:listener could not hand off client connection
Technical Info (only visible for developers):
is_internal_error: true
apex_error_code: APEX.CONDITION.UNHANDLED_ERROR
ora_sqlcode: -12518
ora_sqlerrm: ORA-12518: TNS:listener could not hand off client connection
component.type: APEX_APPLICATION_PAGE_REGIONS
component.id: 4
component.name: Current Alerts
error_backtrace:
ORA-06512: at "SYS.WWV_DBMS_SQL", line 1041
ORA-06512: at "APEX_040100.WWV_FLOW_DYNAMIC_EXEC", line 687
ORA-06512: at "APEX_040100.WWV_FLOW_CONDITIONS", line 272
General users see this:
Error Error processing condition.
ORA-01034: ORACLE not available ORA-02063: preceding line from MYDBLINK
clicking "OK" takes user to another page, not sure how apex decides which, but not a concern at the moment.
I've done a search and read the page http://www.inside-oracle-apex.com/apex-4-1-error-handling-improvements-part-1/ but the new apex error handling isn't clear to me, and I don't know if the apex_error_handling_example provided on that page would be applicable to this situation.

Thanks Patrick.
The PL/SQL Function Body returning boolean condition with:
begin
    for l_check in (
      SELECT 1
       FROM myview@MYDBLINK
      WHERE ... ) loop
        return true;
    end loop;
    return false;
exception when others then
    sys.htp.p('Invalid exists/not exists condition: ' || sys.htf.escape_sc(sqlerrm));
    return false;
end; Resulted in a similar issue:
Error Error processing condition.
ORA-04052: error occurred when looking up remote object MYLINKUSER.myview@MYDBLINK
ORA-00604: error occurred at recursive SQL level 3
ORA-01033: ORACLE initialization or shutdown in progress
ORA-02063: preceding line from MYDBLINK
Technical Info (only visible for developers)
is_internal_error: true
apex_error_code: APEX.CONDITION.UNHANDLED_ERROR
ora_sqlcode: -4052
ora_sqlerrm: ORA-04052: error occurred when looking up remote object MYLINKUSER.myview@MYDBLINK
ORA-00604: error occurred at recursive SQL level 3
ORA-01033: ORACLE initialization or shutdown in progress
ORA-02063: preceding line from MYDBLINK
component.type: APEX_APPLICATION_PAGE_REGIONS
component.id: 4
component.name: Current Alerts
error_backtrace:
ORA-06512: at "SYS.WWV_DBMS_SQL", line 904
ORA-06512: at "APEX_040100.WWV_FLOW_DYNAMIC_EXEC", line 588
ORA-06512: at "APEX_040100.WWV_FLOW_CONDITIONS", line 148However, I created a view with the same query:
CREATE OR REPLACE VIEW v_localview (ALERT_1)
AS
SELECT 1
FROM myview@MYDBLINK ...then change the condition to look at the local view:
begin
    for l_check in (
      select alert_1 from v_localview ) loop
        return true;
    end loop;
    return false;
exception when others then
    sys.htp.p('Invalid exists/not exists condition: ' || sys.htf.escape_sc(sqlerrm));
    return false;
end;As a view is simply a query I'm surprised this should make any difference but it now looks similar to the 3.2 error, inside the region, when the linked database gets its morning cold backup, and this is fine:
Invalid exists/not exists condition: ORA-12518: TNS:listener could not hand off client connection

Creating a database link to SQL server

Hi All,
How can I create a database link from Oracle9i Enterprise Edition Release 9.2.0.1.0 DB to MS SQL Server database.
Thanking You
Regards Lakmal

It depends on your requirements.
You can use either Generic Connectivity or Transparent Gateways.
More information can be found here:
http://www.oracle.com/technology/products/gateways/index.html

Error in Creating a Database Link

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