Select data from different database

hi,
may I know how to select data from different database?
for example,
I've 2 databases, OracleDB and OracleAR
Connect with OracleAR in SQL*Plus
select * from OracleDB.TableName
does Oracle support this kind of query?
how can I retrieve data from other database while im connecting with
other database?

Hi,
Yes, it's possible. No, your syntax won't work.
First of all you have to define a DATABASE LINK inside the DB where you are already connected (in this case OracleAR). Read docs how to do that.
Second thing is the query. It will look like
SELECT * from TableName@<NameOfDatabaseLink>Greetings,
Guido

Similar Messages

Data from different databases in the same report.

Hi Everyone,
I am trying to build a reconciliation report in which I need to show the data from the source and target, side by side.
Source and target are both different databases, although being oracle only
Whenever a new data model is created, it gets attached to a data source and in the report we need to choose a specific data model.
Can we have data from different databases in the same report ?

Yes, it is possible.
One way Is to use dataTemplates. There you can make queries from any number of different databases (The max I have done is 5).
It looks something like that:
<dataTemplate name="NameOfTemplate">
<dataQuery>
 <sqlStatement name="Q1" dataSourceRef="Connection1">
 <![CDATA[ select * from table1]]>
 </sqlStatement>
 <sqlStatement name="Q2" dataSourceRef="Connection2">
 <![CDATA[ select * from table2]]>
 </sqlStatement>
</dataQuery>
<dataStructure>
 <group name="RESULT1" source="Q1">
 <element name="P_FIRST_NAME" value="P_FIRST_NAME"/>
 </group>
 <group name="RESULT2" source="Q2">
 <element name="P_DATE" value="P_DATE"/>
 </group>
</dataStructure>
</dataTemplate>dataStructure is very important when you get data from different places, if you don't define those elements, then only the result from Q1 is shown.
The second possible way is to make as two different data models, each containing their own query and then set Main Data Set as concatenated SQL Data Source.
Best of luck,
Evelyn

Single query to get data from different databases

i need to capture certain fields from certain tables in database 1 and certain fields from certain tables in database 2 into one file using a single SQL statement.
i tried searching on the net
i found that dblinks can help
but iam not sure if ill be able to create dblinks in my situation which is:
i need to get data from oracle to be copied to mysql
this is not a replication acitivity, but i need certain fields from one database and certain from the other
so what iwas thinking is, if i use an sql query to get all the fields (i need around 40) from the different oracle databases and create a singlefile with one insert per select, i can then read that file into mysql
instead of creating multiple sql queries for each table and creating separate files and eventually separate tables in mysql.
can anyone help me here?
or maybe suggest another approach.
thanks

Hi,
I think dblink is the only option available to get data from different databases. It will work for your case too.
CREATE DATABASE LINK db_link CONNECT TO user_name IDENTIFIED BY password USING 'instance_name'you must have the system privilege 'create database link' to create db links. This way you can get the required data and put it in a table in oracle. But i dont know how to put this data from oracle table to Mysql.
HTH
Muneer

Fetch data from different database tables

Hi...
How can i fetch data from different database tables and put it into a internal table and then display it??? Can provide simple short codes as i'm new to ABAP. Thanks.

Hi,
Check this sample code..
TYPE-POOLS: slis.
DATA: BEGIN OF itab OCCURS 0,
 vbeln TYPE vbeln,
 expand,
 END OF itab.
DATA: BEGIN OF itab1 OCCURS 0,
 vbeln TYPE vbeln,
 posnr TYPE posnr,
 matnr TYPE matnr,
 netpr TYPE netpr,
 END OF itab1.
DATA: t_fieldcatalog TYPE slis_t_fieldcat_alv.
DATA: s_fieldcatalog TYPE slis_fieldcat_alv.
s_fieldcatalog-col_pos = '1'.
s_fieldcatalog-fieldname = 'VBELN'.
s_fieldcatalog-tabname = 'ITAB'.
s_fieldcatalog-rollname = 'VBELN'.
s_fieldcatalog-outputlen = '12'.
APPEND s_fieldcatalog TO t_fieldcatalog.
CLEAR: s_fieldcatalog.
s_fieldcatalog-col_pos = '1'.
s_fieldcatalog-fieldname = 'VBELN'.
s_fieldcatalog-tabname = 'ITAB1'.
s_fieldcatalog-rollname = 'VBELN'.
s_fieldcatalog-outputlen = '12'.
APPEND s_fieldcatalog TO t_fieldcatalog.
CLEAR: s_fieldcatalog.
s_fieldcatalog-col_pos = '2'.
s_fieldcatalog-fieldname = 'POSNR'.
s_fieldcatalog-tabname = 'ITAB1'.
s_fieldcatalog-rollname = 'POSNR'.
APPEND s_fieldcatalog TO t_fieldcatalog.
CLEAR: s_fieldcatalog.
s_fieldcatalog-col_pos = '3'.
s_fieldcatalog-fieldname = 'MATNR'.
s_fieldcatalog-tabname = 'ITAB1'.
s_fieldcatalog-rollname = 'MATNR'.
APPEND s_fieldcatalog TO t_fieldcatalog.
CLEAR: s_fieldcatalog.
s_fieldcatalog-col_pos = '4'.
s_fieldcatalog-fieldname = 'NETPR'.
s_fieldcatalog-tabname = 'ITAB1'.
s_fieldcatalog-rollname = 'NETPR'.
s_fieldcatalog-do_sum = 'X'.
APPEND s_fieldcatalog TO t_fieldcatalog.
CLEAR: s_fieldcatalog.
DATA: s_layout TYPE slis_layout_alv.
s_layout-subtotals_text = 'SUBTOTAL TEXT'.
s_layout-key_hotspot = 'X'.
s_layout-expand_fieldname = 'EXPAND'.
SELECT vbeln UP TO 100 ROWS
 FROM
 vbak
 INTO TABLE itab.
IF NOT itab[] IS INITIAL.
SELECT vbeln posnr matnr netpr
 FROM vbap
 INTO TABLE itab1
 FOR ALL ENTRIES IN itab
 WHERE vbeln = itab-vbeln.
ENDIF.
DATA: v_repid TYPE syrepid.
v_repid = sy-repid.
DATA: s_keyinfo TYPE slis_keyinfo_alv.
s_keyinfo-header01 = 'VBELN'.
s_keyinfo-item01 = 'VBELN'.
CALL FUNCTION 'REUSE_ALV_HIERSEQ_LIST_DISPLAY'
 EXPORTING
 i_callback_program = v_repid
 is_layout = s_layout
 it_fieldcat = t_fieldcatalog
 i_tabname_header = 'ITAB'
 i_tabname_item = 'ITAB1'
 is_keyinfo = s_keyinfo
 TABLES
 t_outtab_header = itab
 t_outtab_item = itab1
 EXCEPTIONS
 program_error = 1
 OTHERS = 2.
IF sy-subrc <> 0.
* MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
* WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
ENDIF.
Thanks
Naren

Help needed to insert data from different database

Hi ,
I have a requirement where i need to fetch data from different database through database link .Depending on user request , the dblink needs to change and data from respective table from mentioned datbase has to be fetched and populated .Could i use execute immediate for this, would dblink work within execute immediate .If not , could pls let me know any other approach .

What does "the dblink needs to change" mean?
Are you trying to dynamically create database links at run-time? Or to point a query at one of a set of pre-established database links at run-time?
Are you sure that you really need to get the data from the remote database in real time? Could you use materialized views/ Streams/ etc to move the data from the remote databases to the local database? That tends to be far more robust.
Justin

SELECT data from two databases

I have two databases that I need to select data from in a
single SELECT. Using DWs Advanced window for creating the select I
don't see any way to select more than 1 Connection. Both databases
have unique user and passwords but reside on the same server. Any
idea how I can write a single SELECT to get data from both dbs. I
assumed it would be similar to selecting data from multiple tables
within the same db but the connection part is stumping me. Any
ideas would be greatly appreciated.

TouchstonePress wrote:
> Page 48, Developing a Web Database Application . . .
speaks about making a
> database with two related TABLES each with the same
PRIMARY KEY column with
> which to identify a customer using their unique number.
That's the basic technique for joining two tables in the same
database.
The original poster has tables in different databases that
have
different user accounts and passwords.
Although it's possible to join two databases, you cannot do
it unless
you have one user account with the same privileges on both
databases.
David Powers, Adobe Community Expert
Author, "The Essential Guide to Dreamweaver CS3" (friends of
ED)
Author, "PHP Solutions" (friends of ED)
http://foundationphp.com/

Select data from another database

Hi,
Is it possible to retrieve data from a table from another database?
For instance, I have two databases db_1 and db_2
I login to the database db_1 using
sqlplus username/psw@db1
and to the database db_2 using
sqlplus username/psw@db2
In SQL> db1 I would like to use select statement from a table in the db2. Is it possible?
Another question:
I have two tablespaces TP1 and TP2 in the database db1
The TP1 is my default tablespace.
Can I switch from TP1 to TP2 tablespace in the sqlplus?
If not, how can I select all tables obtained in the TP2? Or how can I select data from a table in the TP2?
Thanks

I don't know how to create a db link. 
SQL Reference Guide - CREATE DATABASE LINK 
There are some examples in the doc above. 
 
What about if db1 and db2 have the same table name? No problem, exactly like when you have two same table name accross two schemas on same database. The table suffixed by the dblink name come from the other schema of other database (schema which you use to connect through the dblink to the other database). 
 
Nicolas.

How to Select Data from different Tables Using Linq

Hi,
I have two different tables, I just want to collect data from tables using Linq to SQL Queries.
The tables looks like This
ID Name ImageUrl
Other Table is
ID EmpID CheckInTime CheckOutTime
What I want to Collect data from CheckInTime and want to place it in a that is in a list view
Same thing I want to do it for CheckOutTime And One thing I want to tell is both tables are joined by a FK EmpID with ID.
What Are the suggestions for me
I have Used this code
var data = from emp in db.Employees
join chk in db.CheckInCheckOuts on emp.ID equals chk.EmpID
select new EmployeeCheckInOut
Name = emp.Name,
ImageUrl = emp.ImageUrl,
CheckIn = emp.CheckInCheckOuts,
CheckOut = emp.CheckInCheckOuts
Here the CheckInCheckOuts is another table, I don't how do I access fields of the Other table "CheckInCheckOuts"
Thank you
Ali

Mitja,
Kind of Tables, I don't Know but I can Tell you that these are Two table, first Table Have Data in It, Name, ImageUrl I have filled this table with names and ImageUrls And are string type.Other Table is for the CheckInTime And CheckOutTime of the employee.
What I need that when I click on the Image button it Should displays The Current Datetime into the label below the Image button.
So I have Problem accessing my CheckInCheckOut Table because I may not have Idea about.Did you understand what I need to do, if you have more question please ask to me.
Thanks
Ali

How to load data from different database

Hi,
My problem is how to load Foxpro 2.6/clipper data into oracle 8 with all its structure and data with SQL loader or other utility if any.
And also how can i integrate existing forpro system into Oracle. i.e client will work on Foxpro application and we will only take its output(data files) on daily basis and convert it into Oracle 8.
Please find any solution.
Regards
null

You can also try to make up an ODBC connection to Foxpro and convert the data from foxpro to oracle using the COPY command (see docs on PL/SQL & OCA). I remember that foxpro/clipper are running on MS-DOS, so I don't know if you can establish an ODBC connection to oracle which can be used from the foxpro/clipper application to use it as a frontend for an oracle database.
Regards, Kai
null

Retrieve data from different database

Hi all,
I have 2 database servers, servar a and server b, i created a form from server a table, in the same form i have a LOV, i want to see data in this LOV from server b table.
how i can do it ?
thanks
Noman

Thanks for your early reply,
Can you please more elaborate how I retrieve data from server b in LOV after creating a link with server b.
What I did exactly I made a data base string in server a from server b, still I am confuse how I retrieve my data from that server database..
Noman

Select Data from different Datasource

Hello,
there is a Fusion Web Application with one Application Module which is based on "Database Server 1".
For calculation of the Values Database 1, I need to get Data (DB Table) from "Database Server 2".
How to get the values (Table) from Database 2 in the same project?
(Do I need to have a second Application Module maybee?)
Thank you in advice.

Hi,
below is my Model.jpx file:
<?xml version="1.0" encoding="windows-1252" ?>
<!DOCTYPE JboProject SYSTEM "jbo_03_01.dtd">

<JboProject
xmlns="http://xmlns.oracle.com/bc4j"
Name="Model"
Version="11.1.1.56.60"
SeparateXMLFiles="true"
PackageName="model">
<DesignTime>
 <Attr Name="_jprName" Value="../../Model.jpr"/>
 <Attr Name="_jbo.SQLBuilder" Value="SQL92"/>
 <Attr Name="_jbo.TypeMapEntries" Value="Java"/>
 <Attr Name="_NamedConnection" Value="mysqlDB1DS"/>
 <Attr Name="_appModuleNames0" Value="model.ProjectsAM"/>
 <Attr Name="_appModuleNames1" Value="model.PPAM"/>
</DesignTime>
<Containee
 Name="model"
 PackageName="model"
 ObjectType="JboPackage">
 <DesignTime>
 <Attr Name="_EO" Value="true"/>
 <Attr Name="_VO" Value="true"/>
 <Attr Name="_AM" Value="true"/>
 </DesignTime>
</Containee>
</JboProject>For your information:
The AM model.ProjectsAM is reference to Datasource DS1 (MySQL Database).
The second Datasource is called DS2 (Oracle Database) and is referenced with AM PPAM.
Now what shell i change in this file, can you inform me please?
Thank You.

Select data from database tables with high performance

hi all,
how to select data from different database tables with high performance.
im using for all entries instead of inner joins, even though burden on data base tables is going very high ( 90 % in se30)
hw to increase the performance.
kindly, reply.
thnks

Also Check you are not using open sql much like distict order by group by , use abap techniques on internal table to acive the same.
also Dont use select endselect.
if possible use up to n rows claus....
taht will limit the data base hits.
also dont run select in siode any loops.
i guess these are some of the trics oyu can use to avoid frequent DATA BASE HITS AND ABVOID THE DATA BASE LAOD.

Select data from table where field is initial

I have table that has 10 million records.
I want to select data from this table where certain date field is blank.
*SELECT * FROM table*
INTO TABLE internal table
WHERE PSTNG_DATE = BLANK.
Does anybody know how to select data from data base table when certain field is blank.
I cont select all data once and delete which i dont want, the table is big, it will blow up app server.
thanks in advance,
Sachin
Moderator: Pls do not lock the posting instead provide me the link, its disrespecting.

Respect the forum rules and common sense, and you will be respected.
"how to select data from a database table when the field is blank" is very basic, and basic questions will be locked, because they have been asked many times and you can find the answer yourself with a little effort. There is nothing disrespectful about it.
Thread locked.
Thomas

Different ways to Transfer data from one database to another database

Hi all,
What are the ways to transfer data from one database to another database. With the following options, i Can transfer data as far as i know. Please
correct me if i am wrong or tell me if there is any other options are available.
1) Create database link/connection string and using this string and COPY command, we can transfer data.
2) By using Export and Import utilities.
I told first one to my interviewer, he told, its strange, by using, COPY command also can we transfer data ? As far as i know, we can transfer data. Am i right ?
Thanks in advance,
Pal

transfer data from one database to another database.You mean store the data of one to another?
1) Create database link/connection string and using this string and COPY command, we can transfer data.every SELECT on a DB-link is transfering data. And you can have all kind of transfers and store on the e.g CTAS of materialized views or.... the SQL*PLUS COPY :
The COPY command is not being enhanced to handle datatypes or features introduced with, or after Oracle8i. The COPY command is likely to be made obsolete in a future release.
But there are many others. Check for ORACLE Streams, and the "COPY" your interviewer was mentioning is about the operating file system COPY right? That's transportable tablespaces.
http://download.oracle.com/docs/cd/E11882_01/server.112/e17120/tspaces013.htm#ADMIN11403
-- andy

Select data from DataBase

Hi;
I try to select data from DataBase, But I get the following error, Could anyone help? thanks.
Exception in thread "main" java.lang.ClassNotFoundException: oracle.jdbc.driver.
OracleDriver
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClassInternal(Unknown Source)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at Lookup.main(Lookup.java:12)
import java.sql.*;
import java.io.*;
import java.util.*;
public class Lookup {
 public static void main(String[] args)
 throws SQLException, ClassNotFoundException {
 String dbUrl = "jdbc:oracle:thin:@augur.scms.waikato.ac.nz:1521:comp319";
 String user = "group029";
 String password = "group029";
 // Load the driver (registers itself)
 Class.forName("oracle.jdbc.driver.OracleDriver");
 Connection c = DriverManager.getConnection(dbUrl, user, password);
 Statement s = c.createStatement();
 //SQL code:
 ResultSet r =
 s.executeQuery("SELECT * " +"FROM movie");
 StringBuffer results= new StringBuffer();
 ResultSetMetaData metaData = r.getMetaData();
 int numberOfColumns = metaData.getColumnCount();
 for(int i=1; i<=numberOfColumns; i++)
 results.append(metaData.getColumnName(i)+"\t");
 results.append("\n");
 while (r.next()){
 for( int i=1; i <=numberOfColumns; i++)
 results.append(r.getObject(i)+"\t");
 results.append("\n");
 s.close();
}

It's a classpath problem. Either you mistyped the class name, or you don't have the class in your classpath. I think Oracle's drivers come in db12.zip or db12.jar or some such. Whatever that jar or zip file is, it has to be in your classpath, but it's not.
Or it is in your classpath, but you're in an appserver context where the classloader that the container provides for your app uses something other than the classpath variable. For instance, in tomcat, the jar file would be uder webapps/yourApplication/WEB-INF/lib I think.

Select data from different database

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