ADF search from multiple database

JDev 11.1.1.3
ADF BC & ADF Faces
I am having a requirement to build advance search functionality, wherein the result data will come from multiple databases. Let's say I have two different database DB1 and DB2. On click of 'search' button I need to query both the databases and populate the data in a single result table. what should be the approach?
Any pointer will be appreciated.
~Abhijit

You've essentially done my POJO approach using the AM as your POJO. Yes you can do it. No, it's not going to be horribly efficient. You'll also have to handle when the newly-created root AM gets closed - on second thought - I hate this approach. Me too - it's just a highly customised one-off solution suitable only as the last resort.
At least in this way, you'll have a chance of having the DB doing the filtering.Right on - let the framework do its job like it's designed to.
I also summarised my thoughts on this thread: Re: Oracle ADF Business Component - Various data source...
It's still 'nice and easy' to show 'search results' from different data sources in separate disjoint (but parameterised) 'regions', with each region displaying a task flow pointing to a different database.
The non-trivial bit is when there's a requirement to combine two data sets - especially large ones (and then make it behave like a normal collection).
I'd mostly never go down this route unless there's an exceptionally compelling need to do so.
On a case by case basis, i might consider:
1. Having a 'primary' database and expose a webservice on the 'secondary' one. Then fetch of a large data set from the secondary and filter it 'in memory' to match with the primary rows...
2. Normal/Materialised views over db links etc. -
Jang Vijay Singh

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" at the right pane.
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Anybody have an idea ?
ROSY

Assign as many schemas to your workspace as you want using the administration app. Read about it in the doc.
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Hi,
I need a small favour from you guys. The prob is as follows:
I need to get name, row_id from table A from schema 1 and gbu_name, name from table B from schema 2 where a.name = b.name. I wrote the query in the following manner:
SELECT a.name, a.row_id, b.gbu_name
FROM Schema1.A as a, Schema2.B as b
Where a.name = b.name
But this query is not working and the error is like " The table does not exists".
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Ah, youre actually asking different things.
In your topic title, you say youre running separate instances
In your body text, you say you are under different user/schema
So tell me, do you have more than one database or not? How many entries in your TNS file?
I would say, for "multiple database instances"
SELECT
a.id, b.id
FROM
tableA a
INNER JOIN
tableB@OTHER_DATABASE_LINK_NAME b <--NOTE!
USING(id)And of course you will have to look up CREATE PUBLIC DATABASE LINK sql..
Message was edited by:
charred

To fetch Data from multiple database tables!

How to fetch Data from fields of multiple database tables!
Give me one example!

use <b>join....</b>
c the SAPHELP docs...
FROM tabref1 [INNER] JOIN tabref2 ON cond
Effect
The data is to be selected from transparent database tables and/or views determined by tabref1 and tabref2. tabref1 and tabref2 each have the same form as in variant 1 or are themselves Join expressions. The keyword INNER does not have to be specified. The database tables or views determined by tabref1 and tabref2 must be recognized by the ABAP Dictionary.
In a relational data structure, it is quite normal for data that belongs together to be split up across several tables to help the process of standardization (see relational databases). To regroup this information into a database query, you can link tables using the join command. This formulates conditions for the columns in the tables involved. The inner join contains all combinations of lines from the database table determined by tabref1 with lines from the table determined by tabref2, whose values together meet the logical condition (join condition) specified using ON>cond.
Inner join between table 1 and table 2, where column D in both tables in the join condition is set the same:
Table 1                      Table 2
A
B
C
D
D
E
F
G
H
a1
b1
c1
1
1
e1
f1
g1
h1
a2
b2
c2
1
3
e2
f2
g2
h2
a3
b3
c3
2
4
e3
f3
g3
h3
a4
b4
c4
3
|--|||--|
    Inner Join
    |--||||||||--|
    | A | B | C | D | D | E | F | G | H |
    |--||||||||--|
    | a1 | b1 | c1 | 1 | 1 | e1 | f1 | g1 | h1 |
    | a2 | b2 | c2 | 1 | 1 | e1 | f1 | g1 | h1 |
    | a4 | b4 | c4 | 3 | 3 | e2 | f2 | g2 | h2 |
    |--||||||||--|
Example
Output a list of all flights from Frankfurt to New York between September 10th and 20th, 2001 that are not sold out:
DATA: DATE   LIKE SFLIGHT-FLDATE,
      CARRID LIKE SFLIGHT-CARRID,
      CONNID LIKE SFLIGHT-CONNID.
SELECT FCARRID FCONNID F~FLDATE
    INTO (CARRID, CONNID, DATE)
    FROM SFLIGHT AS F INNER JOIN SPFLI AS P
           ON FCARRID = PCARRID AND
              FCONNID = PCONNID
    WHERE P~CITYFROM = 'FRANKFURT'
      AND P~CITYTO   = 'NEW YORK'
      AND F~FLDATE BETWEEN '20010910' AND '20010920'
      AND FSEATSOCC < FSEATSMAX.
WRITE: / DATE, CARRID, CONNID.
ENDSELECT.
If there are columns with the same name in both tables, you must distinguish between them by prefixing the field descriptor with the table name or a table alias.

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No, Ignacio did not, at least, not really. ;)
The usage of ALL_TAB_COLUMNS only has info for tables which the actual user has access to.
If you need to be sure that you search each and every table, you have to use DBA_TAB_COLUMNS (or the connected user must be a super hero...).
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Is it not possibe to run a FR report by select members from multiple databases in a single grid??
Please have your valuable inputs.

Yes it possible to retrive data from multiple database using single grid.
Also there are few limitations namely:
Database connections must be of the same type (for example, both must be Essbase database connections or both must be Financial Management database connections).
Mismatched number of dimensions in the database connections may cause retrieval errors.
For more details refer to this link for details:-
http://www.oracle.com/technetwork/middleware/financial-management/tutorials/obe-multipledbs-086586.html
Cheers
Vikas Naidu

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Hi,
In Oracle 8i and above, can join queries span multiple databases??
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database B has table B_T. Assume that both the databases are on the same
server.
Can I run a join query from my application using OCI calls that spans across
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Thank you,
Sashi

In Oracle 8i and above, can join queries span multiple databases??
For eg., I have two databases A and B, and say database A has table A_T and
database B has table B_T. Assume that both the databases are on the same
server.
Can I run a join query from my application using OCI calls that spans across
tables from multiple databases, namely, A_T and B_T?
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Discoverer Reporting Solution for Multiple Databases

I have to build oracle discoverer reports (single point of access) for four different applications. Each application is having separate databases. So whether i should create separate EULs for each applications (in respective databases) or Should i create a single EUL in any one of the databases and then use db links to connect rermaining databases (for reports from the other applications).
Can u suggest me which method will work good if you see the performace?. I need a dingle point of access for all the discoverer reports.
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Hi
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If you are going to use one EUL you need to start out on a sound foundation. This means using libraries to control access too business areas and workbooks. You'll need to adopt some simple naming standards to keep things separate and manageable. I wrote a paper about libraries a few years ago and it is available free of change here on my website: http://ascbi.com/downloads.htm. The paper is called Discoverer Libraries - a Concept.
Best wiishes
Michael

Querying from a database

Hi,
I would like someone to help me coding the search from a database.
I have a html document which asks for a title or an author. My servlet should execute the query using the given title or author retrieving data from the database.
I am trying to execute this query which i know as in sql.
Select Authors.FirstName, Authors.LastName, Titles.Title from Titles, Authors, AuthorISBN where (FirstName = req.getParameter("keyword") OR Title =req.getParameter("keyword") ) AND Authors.AuthorID=AuthorISBN.AuthorID AND AuthorISBN.ISBN=Titles.ISBN
I am getting sqlexceptions if i execute this query in the jdbc. Please someone help me in coding this in jdbc appropriately.
Thank you.

You are getting errors because that string is not valid SQL. Write a string expression that does produce valid SQL, something like this:
String sql = "Select Authors.FirstName, Authors.LastName, Titles.Title from Titles, Authors, AuthorISBN where (FirstName = " + req.getParameter("keyword") + " OR Title = " + req.getParameter("keyword") + " ) AND Authors.AuthorID=AuthorISBN.AuthorID AND AuthorISBN.ISBN=Titles.ISBN;
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What is the best way to search across multiple
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>microsoft access, is this what you are asking
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What is your architecture ? EO are not relevant so they are ignored
project_1
+am_p1_1
+vo_p1_1
project_2
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project_view
- depedency p1
- depedency p2
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Search with multiple criteria

I have searched high and low on the internet o find a way to
do a search through multple fields but the more I lookthe more i
get confused. here is the problem. i want to do a search where the
user can input a data element and select the matching type and
display he results.below is the code that i have for my search
page, but I am confused about the more important parts of the fom -
the actual search variables.
If you look t the code below you see that I have a test field
named "recordID" and a drop down list named "select".
I want to dispay the results in which 'recordID' looks in
table thatis equal to 'select'.
an example of what I want is at the following link.
http://www.phpscriptsearch.com/

DizzDizzy wrote:
> I went to
http://www.webassist.com/professional/products/productdetails=
=2Easp?PID=3D117&CouponID=3Dss2008&RID=3D590&WAAID=3D92
> but i could not find the solution there
Hi Dizz:
Under the banner you'll find links for Overview, Features,
System=20
Requirements, Support. When you click on the Features link,
the MooFX=20
Accordian javascript class runs to update the content on the
page. The=20
bullet points are clickable to similarly update the content
on the page. =
Click on the bullet point "Pro search and sort enhancements"
and read=20
the paragraph at the bottom under the screen shots:
Sophisticated search capabilities
DataAssist integrates the advanced search functionality
previously=20
available in Database Search. Now you can combine advanced
Google-style=20
keyword searches (across multiple database columns) with
price, date or=20
number ranges =96 all without coding.
Please take a look at the feature tour:
http://www.webassist.com/professional/products/featuretour/media_117.asp
As for the Prof's requirements, the form submits two values,
a recordID=20
and a selection to either search by company or by store
number.
If Prof has a table named company and another named store
number, the=20
way you'd search these tables would be to have another table
that=20
contains the selectcategories with a column containing the
values=20
"company" and "storeNumber" along with ID columns that relate
to a=20
categoryID column in the companies table and the storeNumber
column in=20
the Stores table. Using this relationship Prof can create a
reccordset=20
on his results page that returns the values using an INNER
JOIN to=20
combine the tables in the recordset. Similarly by
constructing the=20
relationships properly as to his records (let's say he's
searching 45RPM =
singles - anybody remember those thingies?) His company table
can have=20
an ID column that references his product table where a
companyID is=20
stored. Again, a JOIN statement is used to include the
product=20
information, including the ProductID in the Recordset.
Similarly for the =
Stores table, again, the Products table has a column that
identifies the =
store that carries that productID. If more than one store
carries the=20
product, the column should be a storesID column that
references a=20
ProductStores table which references the stores that carry
the product=20
by a common ID. Again, using the JOIN (this recordset query
would get=20
complex) the necessary data can be returned.
The DataAssist Search Server Behavior applies a sophisticated
WHERE=20
clause to the recordset. so that the requested records can be
returned=20
to the page. Prof is not needing a tool to build database
management, so =
I can see his point... but if this is something you do
regularly,=20
DataAssist will pay for itself over and over in time saved.
And WebAssist is conducting a 50% off sale through next
Friday, so it's=20
a good time to get on board. Here's a link to the discount
page for all=20
the products:
http://www.webassist.com/professional/products/productresults.asp?CouponI=
D=3Dss2008&RID=3D590&WAAID=3D92=20
enthusiastically,
mark haynes.

Consolidate multiple database

Hi,
I'm trying to load data from multiple database with the same structure.
Key are unique for a single database, but can have duplicates when merged, so i need to use a surrogate key.
Something like this
DB1
CustomerID CustomerName
1 John
2 Mark
DB2
CustomerID CustomerName
1 Paul
The target table should look like this
GlobalID OriginalID DatabaseName CustomerName
1 1 DB1 John
2 2 DB1 Mark
3 1 DB2 Paul
I cant figure out how to handle the "DatabaseName" source.
AFAIK it should be a Source column, but should be different any time I run the interface (a variable maybe)?
Can you point me the right way to handle a situation like this?
Regards,
Corrado

Hi Corrado,
Bit lengthy reply after a long.
You can handle this with 1 temp staging table, 3 interfaces and 2 Varaibles.
Variable 1:
Name : SRC_DB1
Schema : <logical schema points to DB1>
Query:
select '<%=odiRef.getInfo("DEST_SCHEMA")%>' from dual
Variable 2:
Name : SRC_DB2
Schema : <logical schema points to DB2>
Query:
select '<%=odiRef.getInfo("DEST_SCHEMA")%>' from dual
Temp Staging table structure let me say it as TEMP_CUST would be same as ur target table except Global Id column.
Interface 1:
Source : DB1.Sourcetable
Target : TEMP_CUST
Mapping:
OriginalID : Sourcetable.OriginalID
DatabaseName : '#SRC_DB1'
CustomerName : Sourcetable.CustomerName
KMs:
LKM : As u wish
IKM: IKM SQL Control Append (With Truncate yes, if required)
Interface 2:
Source : DB2.Sourcetable
Target : TEMP_CUST
Mapping:
OriginalID : Sourcetable.OriginalID
DatabaseName : '#SRC_DB2'
CustomerName : Sourcetable.CustomerName
KMs:
LKM : As u wish
IKM: IKM SQL Control Append (With Truncate NO)
Interface 3:
Source : TEMP_CUST
Target : TARGET_CUST
Mapping:
Global ID : sequence.nextval (execute on target)
OriginalID : TEMP_CUST.OriginalID
DatabaseName : TEMP_CUST.DatabaseName
CustomerName : TEMP_CUST.CustomerName
IKM: IKM SQL Control Append (With Truncate NO)
Create an Package and drag and drop ,
SRC_DB1 (refresh mode), SRC_DB2 (refresh mode), INterface1, interface 2 and Interface3.
Try this and let me know how its goes.
Thanks,
Guru

ADF search from multiple database

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