OBIEE - table join across databases
Hi,
I want to join two tables that are in different databases. I want to join these tables on some condition and then be able to see data from both of them in the reports.
Table 1 - columns A1, B1, C1
Table 2 - columns A2, B2, D2
Currently what we tried is
1. create foreign key constraint between the two tables in the physical layer. Map A1 to A2, B1 to B2.
2. create a join of two tables in BMM layer and then port that to presentation layer and then make report using these columns.
OR
try the approach as described on link http://oraclebizint.wordpress.com/2008/03/19/oracle-bi-ee-101332-cross-database-joins/
in both the above mentioned ways, we are not able to see join of two tables. The link mentioned above doesn't work as we tried it multiple times already.
We are able to see individual data from each table, but when we try to see data from them together, we get error.
Can someone help us with this problem.
Please email me on [email protected] if you need more info as i cant paste the confidential data here on the forum.
Thanks in advance,
Amit
We made sure that the datatypes are the same in both tables.
I will explain a bit how we did it.
We have table T1 in database d1, table t2 in database d2. Since datatypes are different there, we actually had to create tables in physical layer and used select query to extract data from databases and get that into those tables in proper format. For example we had to do mapping to make the values of some parameters consistent (like BABY in T1 and CHILD in T2, so we used 'case when T1.parameter1='BABY' then 'CHILD' and so on for other columns).
After that we defined forgein key constraints between these tables, then ported them to BMM layer, then to presentation layer.
We are not getting error in terms on data types. Is there a step by step guide we can follow to get this cross database join.
Regards,
Amit
Similar Messages
-
Joining tables across databases in OBIEE Physical Layer
I was facing this problem of joining tables across databases in Physical layer of OBIEE admin tool.
I had a requirement to combine two tables from 2 different databases A and B respectively. I had created one database object (OBIEE Object) in the physical layer and I had created two connection pools under that pointing to the required databases. I was able to view the data (right click on the table object --> popup menu option "View Data" ) though I had to go through the "Select connection Pool" window and select the required connection pool. I was able to join the tables and was able to complete the star schema in BMM and bring them up to the presentation layer. Conistency check was also successful. Everything went fine so far.
But when I started building the report, I started getting error whenever I chose the table which was supposed to be queried by using the second connection pool. The error message was something like "table or view does not exist at OCI call OCIStmtExecute". I assume that this was happening because the systm was not able to understand which connection pool to choose (because there were two pools defined under one database object) and by default the server was choosing the first one. If anybody is having a different opinion or definite information about this, kindly update with your reply.
I could resolve this problem after creating a separate database object with a separate connection pool defined under it, which points to the second database. Imported the required table under this database object. (Infact it was reverse. When I re-imported the table, OBIEE Admin tool, by default created its own database object and the connection pool separately for the imported table).
Once this was done then I went ahead as usual by joining the tables across these two different database objects and modelling was already done (ofcourse with a little more tweaking since the mapping had to be redone between BMM and Physical layers). Now I could build the report in the reporting layer without encountering any error.
Appreciate and welcome any further additions/updations/corrections regarding this issue(?).
-MMishra.
Edited by: user13483341 on Nov 29, 2011 8:20 AM
Edited by: user13483341 on Nov 29, 2011 8:20 AM
Edited by: user13483341 on Nov 29, 2011 8:24 AMHi Deepak, Thanks for your reply.
Appreciate if you can help me with another thread "possibility of multi-currency in OBIA 7.9.6.2 financial anlytics".
- MMishra. -
Outer joins across multiple databases
I'm trying to join three tables: 2 from data warehouse and 1 from Siebel database in OBIEE. I create the physical and logical joins (no errors or warnings). The model looks like this: Account Address (table 1) -> Account (table 2) -> Siebel Customer Data (table 3)
I create two queries in Answers:
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State: HY000. Code: 10058. [NQODBC] [SQL_STATE: HY000] [nQSError: 10058] A general error has occurred. [nQSError: 42019] Join condition, D901.c3 <> 0, contains predicates that are currently not supported for outer joins across multiple databases. (HY000)
Can someone help me understand why the join between the two databases works for the first query but when I add a second table it fails?
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Select query based on joining of tables from different database is taking too long
Hi Team,
Select query on table with millions of records is taking very long time. It took 50mins, the below query is joining on multiple table from two databases DB1.dbo.Table1 contains 100 million records and also Table3 and Table4 (of different database) might
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Select T1.*
From DB1.dbo.Table1 T1
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Where U.Col4 NOT IN ('A1', 'A2', 'A3', 'A4', 'A5', 'A6','A7','A8','A9')
And (T1.flg IS NULL OR T1.flg = 'N')
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How can i improve the performance of this query. Actual thing is update the data in Db1.dbo.table1 based on the conditions but if the select is taking close to 1hr then update will take hours together. Indexes already implemented on all the tables.
Thanks,
Eshwar.
Please don't forget to Marked as Answer if my post solved your problem and use Vote As Helpful if a post was useful. It will helpful to other users.Thanks.
Join Table4 CA on RTRIM(T1.Col1) + T2.Col2 = CA.Col1
This join is not working with spaces if Rtrim is not used.
Thanks! Eshwar.
Please don't forget to Marked as Answer if my post solved your problem and use Vote As Helpful if a post was useful. It will helpful to other users. -
Can we join Multiple Databases tables in PRD File ?
Hi ,
I am working on POC project and trying to Join Multiple Databases to create one rpd file . Lets say I have complete SH schema from Oracle and I want couple of tables (Time and Products) tables from Sybase .
I want bring sybase TIME and Product tables into Oracle SH Schema and create joins in physical layer. When I try to do it, it is throughing an error .. Am I missing some thing here ?
Is it possible?
Thanks
ShivajiYou have not mentioned what is the error!!!
we can create join b/w the tables of different databases
You need to select the table from one database and aswell as other table in other database and
right click > physical join > selected tables only...
This is the way of creating physical joins... or else you select both the databases and select physical joins...
It's better that you mention what is the error you are getting..??
Thanks & Regards
Kishore Guggilla -
How to join tables on different databases
In the company I work in, we've got some java applications working on two different instances which "hide" to each others (one on 10g and the other on 8i). Some decoding tables, which should common to both of them, are only present on 8i one.
I've been told that java works 'cause it allows to connect to both of databases and then report the information on front end applications.
The question is this: since we'll have to get reports on both of databases, is it possible to perform queries by using tools like oracle forms, oracle reports, sql developers, ... for joining the tables of the two different databases as java does? We have to get how to accede directly to the two instances for getting data from both of them for reporting activities. I remind you that we cannot use dblinks between the two databases for internal security reasons.
Thanks in advance!Even java can't join between tables on two databases if the db links are not created.
So it essentially works that it fetches the data from one db and then from another db ( using two different db connctions) and then you can utlize these data and perform some joining.
Coming back to database world. It can be done like the usual dw approach.
1. Connect to a third db:
2. Get data from one database
3. get data from other database.
now do all the joins that you want to do -
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Hello guys
I have a situation where I have to bring in 5 tables from transactional database to do reporting on.. I looked at the tables, there are not typically dimension or fact tables. Each table contains information very specifically, at the same time all tables have numeric values that needed to be aggregated at the lowest level of that table..
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I wonder how would I be able to configure such model in OBIEE?
Any thoughts?Thank you for the reply..
The specific situation I have here is:
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In the BMM layer, each of these 4 tables have columns that should be measures, such as customer.customer credit limit, receipt line. quantity, receipt header. reciept tendered, inventory.quantity on hand... They are more measure columns from each table, but I am just listing one from each..
In this case if i set the aggregation rule on each column, then the BMM model won't a star schema anymore because every table can be fact..
I thought about adding all the measure columns into 1 logical fact table, which then the logical fact will have 4 LTS: customer, Re Line, Re Header, Inv.. This will be fine if I am only dealing with 1 store... However, in reality there will be 50 stores with the same exact tables/structures but on different servesr. Therefore, the logical fact will end up with 4*50 = 200 LTS each has fragmentation defined "store number = NYC or something else"..
Just wondering if combining all the measures in one logical table is the only way to model this design or not? What would be the best thing to do if in this situation I have to report against multiple data source of the same tables in 1 subject area?
Please let me know your thoughts..
Thank you -
Can do explict join for database view?
Hi all,
I would like to ask whether there is a way to specify the join condition to be outer join for database view. It is because I need to map 2 tables in the view and I want to be able to find the record in the view table if the record exists in Table A but not Table B.Hi Jaya,
A Maintenance View helps you to maintain data that is distributed across different or multiple database tables. So, it becomes an easy way to update data and without any programing effort. You can create a Maintenance View across multiple tables with one Table as Primary Table and others as Secondary Tables. But the tables must be related with each other with a Foreign Key Relationship.
Have a look at the following link which tell you about the procedure of creating the Maintenance Views :
http://help.sap.com/saphelp_nw04s/helpdata/en/cf/21ed2d446011d189700000e8322d00/frameset.htm
Hope this helps.
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Samantak. -
Displaying the sizes of every table in a database
Hello All,
I need to get the table sizes for each and every table in a database.
I would have checked it manually but there are many number of tables.
I am using SQL Server 2008 R2.
Thanks and Regards, Readers please vote for my posts if the questions i asked are helpful.Hi,
Please make habit of searching net before posting or if you dont know how to write a query. A simple search would lead you to
http://stackoverflow.com/questions/7892334/get-size-of-all-tables-in-database
SELECT
t.NAME AS TableName,
s.Name AS SchemaName,
p.rows AS RowCounts,
SUM(a.total_pages) * 8 AS TotalSpaceKB,
SUM(a.used_pages) * 8 AS UsedSpaceKB,
(SUM(a.total_pages) - SUM(a.used_pages)) * 8 AS UnusedSpaceKB
FROM
sys.tables t
INNER JOIN
sys.indexes i ON t.OBJECT_ID = i.object_id
INNER JOIN
sys.partitions p ON i.object_id = p.OBJECT_ID AND i.index_id = p.index_id
INNER JOIN
sys.allocation_units a ON p.partition_id = a.container_id
LEFT OUTER JOIN
sys.schemas s ON t.schema_id = s.schema_id
WHERE
t.NAME NOT LIKE 'dt%'
AND t.is_ms_shipped = 0
AND i.OBJECT_ID > 255
GROUP BY
t.Name, s.Name, p.Rows
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Please mark this reply as answer if it solved your issue or vote as helpful if it helped so that other forum members can benefit from it.
My TechNet Wiki Articles -
How to create a view consisting of data from tables in2 different databases
Using Oracle 10.2g
I have 2 databases Gus and haggis on Comqdhb schema.
glink indicates a databse link between Haggis and Gus
In Gus there are tables student,subject,grade,school containing columns like upn...
STUDENT
upn
academicYear
SUBJECT
subject
GRADE
examlevel
grade
SCHOOL
sn
In HAGGIS there are tables student,grade,teacher containing columns upn...desc below.
STUDENT
upn
GRADE
grade
upn
academicyear
level
Create view in your HAGGIS database which will join all of the exam grades together. You should have one view which will produce the following relation :
examGrade(upn, subject, examlevel, sn, grade,academicYear)
so I need to create a view which gets the data from both the tables in both the databases.
create view as examGrade(upn, subject, examlevel, sn, grade,academicYear) as select s.upn
But i am not getting how to select a column from 2 tables in different databases
I mean if i said
select upn from comqdhb.student@glink,comqdhb.student;
select upn from comqdhb.student@glink,comqdhb.student
ERROR at line 1:
ORA-00918: column ambiguously defined
help me out,Thank you.Thank you for the reply will follow up the code format
Create views in your HAGGIS schema database which will join all of the exam grades together. You should have one view which will produce the following relation :
examGrade(upn, subject, examlevel, sn, grade,academicYear)
I understand that there wont be duplication when we use conditions
If i query
select count(upn)
from comqdhb.student@glink I get 9000
but after the union
create view examGrade(upn, subject, examlevel, sn, grade,academicYear)
as
select distinct s.upn as upn
, g.subject as subject
, g."LEVEL" as examlevel
, g.grade as grades
, '9364097'
, to_number(g.academicyear) as academicyear
from comqdhb.student s
, comqdhb.grade g
where s.upn=g.upn
union
select s.upn
, sb.subject
, g.elevel
, g.grade
, s.acyr
, sc.sn
from comqdhb.subject@glink sb
, comqdhb.student@glink s
, comqdhb.gradevalues@glink g
, comqdhb.school@glink sc,
, comqdhb.studentingroup@glink sg
, comqdhb.teachinggroup@glink tg
where sb.sid=tg.sid
and tg.gid=sg.gid
and sg.upn=s.upn
and g."LEVEL"=tg.elevel
and s.school=sc.id
and sc.id=tg.id; returns
count(upn) from exam gradeIt gets stuck actually sometimes it returns
932002 some results.
2:
Another problem i am having which i am trying to solve and written up my ideas but haven't been getting the expected results.Hope you can help.Thank you.
Information:
=======
All children take exams at the age of 16 called a General Certificate of SecondaryEducation (GCSE).
They have to study and take exams in Mathematics, English and Science, and can take other subjects such as History, French, Art etc. Most students will study between 5 and 10 different subjects before taking their GCSEs.
For each exam, a student is awarded a grade from A*, A, B,C,D,E,F,G,U,X An A* grade is the best grade achievable and an X is the worst grade.
In order to analyze how students have performed, each grade is mapped to a numeric value as follows:
Grade Numerical score
A* 8
A 7
B 6
C 5
D 4
E 3
F 2
G 1
U 0
X 0
Now why i need this avgGCSE is because i have to create a view containing avgGCSE of the students it is used in the next question where a condition is avgGCSE is between 6.5 and 7
In order to calculate the avgGCSE the idea is to calculate the grades of the students and map the grades to their corresponding scores/values
add them all up and div by the total no of grades to get the avg.
desc comqdhb.STUDENT@glink;
STUDENT
=======
UPN
FNAME
CNAME
DOB
GENDER
PREVIOUSSCHOOL
XGCSE
SCHOOL
ACYR
STUDENTINGROUP
=============
UPN
GID
STARTDATE
ENDDATE
GRADE
GRADEVALUES
===========
GRADE
LEVEL
VALUE
I have a opinion that xgcse in STUDENT table refers to the avgGCSE which i want to calculate as when i asked my professor as to what xgcse he said that he forgot to take it out of the table and it is not necessary while creating avggcse.
select *
from comqdhb.student@glink
where xgcse<6.5; Displaying a result
returns:
UPN FAMILYNAME COMMONNAME DATEOFBIR GENDER PREVIOUSSCHOOL XGCSE SCHOOL ACYR
===========================================================================
1011 KIMBERLY ABBOT 07-JUL-79 f none 3.93500948 2 2
select *
from comqdhb.student@glink
where xgcse between 6.5 and 7 and upn = 1386; Displaying a result
returns:
UPN FAMILYNAME COMMONNAME DATEOFBIR GENDER PREVIOUSSCHOOL XGCSE SCHOOL ACYR
===========================================================================
1386 STEPHANIE AANNESSON 15-JAN-79 f none 6.88873 2 2 so if xgcse is the avgGCSE then upn 1011 has avggcse<6.5 and 1386 has avggcse >6.5
my idea was backward strategy like so now if we find out upn 1368 has suppose xgcse(avggcse)>6.5 how to extract the avggcse for the particular upn We need to map grades from GRADEVALUES to grade in STUDENTINGROUP and map upn from studentingroup to upn in student to output the values for the corresponding grades from GRADEVALUES
select grade
from comqdhb.studentingroup@glink
where upn = 1011;
Result:
GRADE
=====
D
F
B
E
C
E
E
B
8 rows selected. Mapping each grade to the corresponding value and calculating we get
32/8=4 total(values to corresponding grades)/no of grades.
But the xgcse for upn 1011 is 3.935 and i am getting 4!! maybe xgcse isn't avggrade but ? is the procedure by me correct for calculating avggcse
select grade
from comqdhb.studentingroup@glink
where upn = 1386;
Result:
GRADE
======
A*
A*
A*
A*
B
A*
A*
A
B
B
B
11 rows selected. grade to the corresponding value and calculating we get
79/11=7.12 total(values to corresponding grades)/no of grades.
But the xgcse for upn 1011 is 6.88... and i am getting 7.12!!
But another problem
when i say
select g.value,g.grade
from comqdhb.gradevalues@glink g
, comqdhb.studentingroup@glink sg
where g.grade=sg.grade
and sg.upn=1011;
result:
======
VALUE GRADE
===========
100 B
100 B
80 C
60 D
40 E
40 E
40 E
20 F
6 B
6 B
5 C
VALUE GRADE
=============
4 D
3 E
3 E
3 E
2 F
16 rows selected.
select distinct g.value,g.grade
from comqdhb.gradevalues@glink g
, comqdhb.studentingroup@glink sg
where g.grade=sg.grade
and sg.upn=1011;
result:
======
VALUE GRADE
============
2 F
100 B
6 B
3 E
60 D
5 C
4 D
80 C
40 E
20 F
10 rows selected. I am getting only 8 for the query
select grade
from comqdhb.studentingroup@glink
where upn = 1386; here its becomming 10 and also its displaying values as 100 and ...
select distinct *
from comqdhb.gradevalues@glink;
GRADEVALUES
===========
LEVEL GRADE VALUE
================================
a A 120
a B 100
a C 80
a D 60
a E 40
a F 20
a U 0
a X 0
g A 7
g A* 8
g B 6
LEVEL GRADE VALUE
================================
g C 5
g D 4
g E 3
g F 2
g G 1
g U 0
g X 0
18 rows selected. I was hoping if i could map the grades and get the values and calculate avggrade by total(values)/count(values)that would be it but here there are values like 100...
select sum(g.value)/count(g.grade) as avggrade
from comqdhb.gradevalues@glink g
, comqdhb.studentingroup@glink sg
where g.grade=sg.grade
and sg.upn=1386;
avggrade
========
37.4375 the avggrade cant be this big and when i map each grade i obtained for 1368 like a to 7+b to 6 so on i get avggrade 7.12
kindly help.
Edited by: Trooper on Dec 15, 2008 4:49 AM -
Limitation on the number of tables in a Database Schema!
Hi All,
Is there a limitation on the number of tables present in a schema that can be fetched in Designer while creating a universe.
Customer is using Oracle schema which contains 22000 tables and while trying to insert tables in Designer XIR2 (or trying to get the table browser) Designer hangs.
In BO 6.5 there are no issues while retrieving the tables from the schema in Designer.
Is there a way to retrieve only a certain amount of tables in Designer XIR2?
Thanks for your help!Hi Ganesh,
Following are the Answers regaring your queries:
Query : 1
There is no limitation on the number of components (objects, classes, tables, joins, hierarchies, lov's, etc) in a universe. But of course as the number of components increases, you could run into problems related to performance.
This depends on available RAM and the processing speed.
Query 2:
There is NO such option to select the number of table to be automatically inserted in to the universe because Suppose if you have 22000 tables in DB and you want only 1000 table ,you entered 1000 tables as the value to insert tables in Universe then How Designer will come to know which tables you want to take in Schema to build the Universe?
It all depends on the DBA and Universe Designer which tables are important for organizations reporting needs.
When you create connection to the DB then Connection will fetch all table from the database and we canu2019t limit DB data retrieval.
I hope this Helps...
Thanks...
Pratik -
Is there a way to create "temporary" tables in SAP database?
Hello,
Is there a way to create temporary tables in ABAP?
Here is our scenario:
1. Invoke a custom RFC that creates a temporary table and returns the name of the table.
2. Invoke another custom RFC and pass this table name as parameter. This RFC internally does some INNER JOIN with the temporary table.
3. Invoke the third RFC to delete the temporary table.
Note that the name of the table cannot be static. We have many users using our application simultaneously and connecting to the SAP server.
I would appreciate it if you could point me in the right direction.
Thank you in advance for your help.
PeterI just ran into a similar issue. While only calling the select statement 2 times, each time had so many entries in the 'for all entries' list, that the compiler converted this into about 700 calls to the select. Now since the select joined three real tables on the database, the trace shows this one select as being the slowest item in this application.
I think that happened because 'for all entries' gets converted to an 'IN' clause, and then the total number of characters in any SQL statement has an upper limit. So the compiler must make the select statement over and over until it covers all entries in the 'for all entries' list. Is that correct?
Since every database I ever saw has the concept of db temporary tables, I have used db temp tables many times for this sort of thing.
The ABAP compiler could determine that more than one IN statement will be need, then use an alternate: write all the FOR ALL ENTRIES to a db temp table, then join on the db temp table, then drop db temp table. Since the compiler does this sort of thing, no application code needs change to get the speed boost. -
How to delete duplicate records in all tables of the database
I would like to be able to delete all duplicate records in all the tables of the database. Many of the tables have LONG columns.
Thanks.Hello
To delete duplicates from an individual table you can use a construct like:
DELETE FROM
table_a del_tab
WHERE
del_tab.ROWID <> (SELECT
MAX(dups_tab.ROWID)
FROM
table_a dups_tab
WHERE
dups_tab.col1 = del_tab.col1
AND
dups_tab.col2 = del_tab.col2
)You can then apply this to any table you want. The only differences will be the columns that you join on in the sub query. If you want to look for duplicated data in the long columns themselves, I'm pretty sure you're going to need to do some PL/SQL coding or maybe convert them to blobs or something.
HTH
David -
Error while importing tables from oracle database
Hi
I am getting the following error when i am trying to import table from oracle database.
my operating system is windows and my database is oracle.
[nQSError: 16001]ODBC error state: IM004 code:0 message:
[Microsoft][ODBC Driver Manager] Driver`s SQLAllocHandle on SQL_HANDLE_ENV failed.
please help me in resolving this issue.
Thanks and Regards,
RajHi Madan,
I have done migration Discoverer Admin EUL Layer into OBIEE repository using below methodology.
Navigate to the <installdrive>\OracleBI\server\Bin directory. There are two important files in this directory: the migration assistant executable file named MigrateEUL.exe and a properties configuration file named MigrationConfig.properties.
Could you please help me how to migrate discoverer plus workbooks and worksheets into OBIEE Answers?
go through below link, It will show navigation steps for migrating of EUL from Discoverer to OBIEE.But i need migration of workbooks and worksheets from Discoverer into OBIEE Answers.
http://www.oracle.com/technology/obe/obe_bi/discoverer/discoverer_1012/discomigration/migrate_disco_biee.htm
This is very great full help to me …
Advance thanks for your suggestions.
Regards
Duraga Prasad. -
Tables or Logical database to create standard report for Equipment BOM?
Dear All
My client has requirement for the report with fields like to see the status of Equipment BOM(input of Equipment number in selection screen) or for Particular set of Materials(input of component number in selection screen) available stock quantity,storage location of stock,description of component,price of component,Pending PR of component(if any),Pending PO of component(if any) etc
I want to develop the report with standard infoset query instead of going for abap development.is there any logical database to map the report or what tables can i use for table joins??
Required sample report with fields as below
BOM Component
Stock available/Not available indicator
Description of Components
BOMQty/ UOM
Price
Part Number
Plnt
Sloc
Stock Qty
Bin
Pending PR
Pending PO
1000001121
YES
BEARING
NO
2000
ERS22
1000
MECH
4
A1
300012431
Regards
M.ManojkumarManoj,
The following is the tested solution.
Table join
Output
This figure shows the case of a Equipment BOM where 3 components are there. Installed Quantity are 4, 1, 1 respectively. Last two columns are showing the Storage Locations and the Stocks available.
Fields taken to output are
From STPO : IDNRK MENGE MEINS
From MARD LGORT LABST
As said before, more than this you can not do in SQVI. With this basic join in SQ02, using codes in Extras you can do much more.
Jogeswara Rao K
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Help me i lost money for nothing..
Hello,i bought diamonds in a game called mini battle saga deluxe worth 14$ apple deducted the money 14$ in my bank account Already but in the game Game master check that all my transaction failed so i didn't get the diamonds but i lost my real money
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How to transport mapping format for ELM ????
Hi All, I want to know how to transport the Mapping Format that we create for external list management (ELM). I clicked on the Customizing Transport link given in toolbar. But that doesnt seem to create any subtask. Is there any other procedure
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How can i change my apple ID in my iphone once i did on the internet?
ciao! i changed my apple ID here because i changed my email adress. But now my iphone consider wrong my password and only let me change the password and not the apple ID. is there any way to change this?