Converting SQL SERVER to Oracle

Hey everyone,
I have one thesis about database. I have a plan to making a program to convert database with sql server to Oracle Database. Anyone have made some programs that similar with mine ?? Anyone can give me some informations? Can you tell me about the concept??
Thanks everyone....

aDiny wrote:
can you tell me the concept and example programs that able to do this job like that?
1. Define data in source
2. Define destination.
3. Read data from source (based on 1)
4. Map date to destination (based on 1 and 2)
5. Write data to destination (based on 2)

Similar Messages

Sql Developer wont convert Sql Server to Oracle lob w Oracle 11gr2 client

I have the Sql Developer 2.1.1.64 loaded on a Windows machine accessing Oracle 11g release 2 database on a linux box with no jre. I have the latest version of java (1.6.0.21) and jdk (6 u 21). When I loaded Oracle 11g r2 client onto my windows box, all sql server tables could be moved to my Oracle repository except tables that converted from a Sql Server 2005 type of nvarchar(max) to nclob. I would just get every row in the error column during the move.
Turns out when I uninstalled the Oracle 11g r2 client and installed the Oracle 11g r1 client, it worked.

I'm afraid you're in the wrong forum. This is the Berkeley DB Java Edition forum.
--mark

Convert sql/server to oracle

I have a problem with left joint
sql/server
GTxtSQL = " select E.*, CodFamille, LibFamille, CodSFamille, LibSFamille, " _
& " CodLocal, LibLocal, CodService, LibService, F.CodFourn, F1.CodFourn as CodFournSAV " _
& " from tp_Index_1 IX, t_Equip E, t_Famille_E FE, t_ESFamille SFE, t_Service S, t_Local_E L, t_Fourn F, t_Fourn F1 " _
& " where ClePerso=" & GClePerso & " and IX.cle1=E.CleEquip " _
& " and E.CleFamille*=FE.CleFamille_E and E.CleSFamille*=SFE.CleESFamille" _
& " and E.CleService*=S.CleService and E.CleLocal*=L.CleLocal_E " _
& " and E.CleFourn*=F.CleFourn and E.CleFournSAV*=F1.CleFourn " _
& " order by LibEquip "
i can't have many left joint= (+) on one table?
GTxtSQL = " select E.*, CodFamille, LibFamille, /*CodSFamille, LibSFamille, */" _
& " CodLocal, LibLocal, CodService, LibService, F.CodFourn, F1.CodFourn as CodFournSAV " _
& " from tp_Index_1 IX, t_Equip E, t_Famille_E FE,/* t_ESFamille SFE,*/ t_Service S, t_Local_E L, t_Fourn F, t_Fourn F1 " _
& " where ClePerso=" & GClePerso & " and IX.cle1=E.CleEquip " _
& " and E.CleFamille=FE.CleFamille_E /*and E.CleSFamille=SFE.CleESFamille*/" _
& " and E.CleService=S.CleService and E.CleLocal=L.CleLocal_E " _
& " and E.CleFourn=F.CleFourn and E.CleFournSAV(+)=F1.CleFourn " _
& " order by LibEquip "
thank's for your answer.

I'm afraid you're in the wrong forum. This is the Berkeley DB Java Edition forum.
--mark

CONVERT function in SQL Server to oracle

All,
How to convert CONVERT function in SQL Server to oracle, below mentioned format is in SQL Server:
variable1 = convert(numeric(20), SUBSTRING( parameter1,parameter2,parameter3)
parameter1 datatype nvarchar2(100)
parameter2 datatype bigint
parameter3 datatype bigint
I did bit R&D, but was not successful..but still getting on..
If any help that would be great...
Regards,
~ORA

You cannot specify the precision/scale or length of input paramters to a stored procedure in Oracle, or at least the pl/sql engine does not respect the sizing. Assuming that you want to do something with variable1 in the procedure, and not just return it, the Oracle equivalent would be something along the lines of:
SQL> CREATE FUNCTION f (p_param1 IN VARCHAR2,
2                     p_param2 IN NUMBER,
3                     p_param3 IN NUMBER) RETURN NUMBER IS
4     l_var1 NUMBER(20) := SUBSTR(p_param1, p_param2, p_param3);
5 BEGIN
6     RETURN l_var1 * 10;
7 END;
8 /
Function created.
SQL> SELECT f('ABC10DEF', 4, 2) FROM dual;
F('ABC10DEF',4,2)
              100You may need to adjust the return type to match what you are actually returning.
You can also use this iin a direct assignment in pl/sql without doig a select, something like:
SQL> DECLARE
2     l_num NUMBER(20);
3 BEGIN
4     l_num := f('ABC10DEF', 4, 2);
5     DBMS_OUTPUT.Put_Line('The number is: '||l_num);
6 END;
7 /
The number is: 100John

SQL Server to Oracle Converted Model missing users

I am doing a migration from SQL Server to Oracle with about 100 users. The captured model seems to be correct and all of the users are there. But, when creating the Oracle Converted Model, not all of the users are being converted. On the first attempt, the Converted Model had only 21 users, and on the next attempt, the Converted Model only had 16 users. Does anyone know what could be causing this?

Oracle Database XE does not allow more than one instance per server.
To define a primary key correct syntax is:
Create table summary(
Field NOT NULL PRIMARY KEY,
Or:
PRIMARY KEY constraint tabla_PK (field)
To generate the value of the primary key you must create a sequence before or after creating the table:
Create Sequence summary_seq
Start with 1
Increment by 1
Nocycle;
You can use the sequence in INSERT INTO or through a trigger:
With Insert Into:
Insert into Summary
Values (summary_seq.nextval, valkor1, value2 ,...);
With a trigger:
Create or replace Trigger BI_summary
Before Insert on SUMMARY
For each row
Begin
Select summary_seq.nextval into campoPK
From dual;
End;

Convert substring function from SQL Server to Oracle

I am converting a large application written for SQL Server to Oracle and have encountered a difference in how the substring function is called between the two database systems.
In SQL Server:
select substring('xyz'1,2)
In Oracle:
select substr('xyz',1,2)
Is there a way to establish a user-defined operator to map the substring call to a substr call so I don't have to change the application code?
Is the user-defined function a way to do this?
Which is better?

If you want to be able to use the code that has substring in it, without modifying it, and have it do the same thing as substr, then try running the script below. It will create a user-defined function named substring that will cause substring to act like substr.
CREATE OR REPLACE FUNCTION substring
(p_string IN VARCHAR2,
p_start IN VARCHAR2,
p_end IN VARCHAR2 DEFAULT NULL)
RETURN VARCHAR2
IS
v_string VARCHAR2 (100);
BEGIN
IF p_end IS NULL
THEN
SELECT SUBSTR (p_string, p_start)
INTO v_string
FROM DUAL;
ELSE
SELECT SUBSTR (p_string, p_start, p_end)
INTO v_string
FROM DUAL;
END IF;
RETURN v_string;
END substring;
null

Convert BW from Sql Server to Oracle

Does anyone know of any documents that discuss converting an existing BW implementation from Sql Server to Oracle?

Never heard about ... we did something similar but creating a "new" BW sys by Change Requests, and the populating it with data.
Hope it helps
GFV

Convert Joins from SQL Server to Oracle

I am converting a client application's back end from using SQL Server to Oracle. This application provides a GUI that allows people to capture one or more areas of text in a text file and create database tables from these areas. It allows them to perform joins between the tables, etc. I have to convert the area that programatically creates queries behind the scenes to do these joins. Having not done much work with Oracle joins, I'm wondering if someone could show me how I could convert the sample join provided. I can probably handle the rest from there.
SQL Server Query:
SELECT
[T1].[Tk] AS [Tk],
[T1].[Tk Title] AS [Tk Title],
[T2].[Rate] AS [Rate],
[T1].[TotCurHrs] AS [TotCurHrs],
[T1].[TotCurAmt] AS [TotCurAmt],
[T1].[TotCaseHrs] AS [TotCaseHrs],
[T1].[TotCaseAmt] AS [TotCaseAmt],
[T3].[SortF] AS [SortF]
FROM
[T1] FULL JOIN [T2] ON [T1].[Tk] = [T2].[TKName]
INNER JOIN [T3] ON [T1].[Tk Title] = [T3].[EliteTitle]
)

Do as previous colleagues suggested, although you may get the problem with column names. I see at leats one of them has space in it [Tk Title]. So the question is - how you migrated table structure to Oracle? Do the column names are ABSOLUTELY the same as in MS? Then you have to replace brackets with double quotes ", because normally Oracle all identifiers tries to convert to uppercase and also space is not allowed. Only if you use quotes this is possible.
Gints Plivna
http://www.gplivna.eu
Edited by: gintsp on Oct 13, 2010 4:04 PM

How to convert SQL server stored procedures to Oracle 11g

Hi Experts,
In SQL server 30 stored procedures are there how to convert all the stored procedure
from SQL server to Oracle 11g.
Please help me,
Thanks.

ramya_162 wrote:
In SQL server 30 stored procedures are there how to convert all the stored procedure
from SQL server to Oracle 11g.
The single most fundamental concept you need to understand (grok in its fullness) is:
ORACLE IS NOT SQL-SERVER
There is very little, to NOTHING, in common between T-SQL (a language extension to SQL) and PL/SQL (integration of SQL with the language Ada, part of ALGOL family of languages that includes Pascal and C++).
So taking a T-SQL procedure and porting it as is to PL/SQL is plain stupid.
Why?
Oracle sucks at trying to be SQL-Server.
So how do you migrate from SQL-Server to Oracle?
By taking the REQUIREMENTS that the T-SQL procedures address, and addressing these requirements using Oracle SQL and PL/SQL.

Converter program for MS SQL Server to Oracle

My problem with converting MS SQL Server queries in a SQL Pass-thru is becoming critical at my job.
I am hoping there is an easy converter tool that will let a user take SQL Server statements and feed them into a converter that outputs Oracle SQL.
Does such a program conversion tool exist?
I bet not, right?

Your bet is right as SQL-Server's SQL implementation is not the same as Oracle's SQL implementation. There are numerous differences. Translating one to the other is not a 1:1 keyword swap.
And when these SQL statements involve locking and concurrency, there are also significant differences in core database functionality between SQL-Server and Oracle.
What exactly is the problem you are facing? SQL-Passthru is specifically designed as a SQL interface that does not touch and change (and muck up) a SQL being passed to a remote database - so the actual raw SQL text being send is what arrives at the server end. Allowing you to, for example, use Oracle's SQL dialect inside SQL-Server to talk to a remote Oracle database - without SQL-Server throwing errors about Oracle dialect being used. Oracle has a similar passthru option.
Why is this not working? Or is the issue something else?

Error converting SQL Server DDL and views to Oracle

I am trying to convert SQL Serve 2008 on windows to Oracle 11g using SQL Developer 3.2.20.09. I am using the jtds-1.2.7 drivers to connect to SQL Server.
I have made several attempts to run the conversion and am getting the tables, indexes, and triggers converted with no issue. However, my Procedures and views are not coming across. All of them are giving similar errors as:
"Failed To Convert Stored Procedure get_compvision > esp3.dbo.get_compvision:unexpected end of subtree: Line 0 Column 0"
When I log into the source SQL Server environment using SQL Developer, I get an empty SQL Editor window with "null" when I try to {right-click -> "Open"} on the Procedure.
Logging into SQL Server Administrator as the same user I can see the source code, so the issue appears to be related to SQL Developer and not my user privleges. I am a dbo alias in SQL Server.
In addition, if I click on a view, I can see the data and metadata, but not the SQL that defines the view. I see tabs for column, data, triggers, and details.
In addition, if I go to the "capture" for my Migration project and drill down to procedures, I can see them listed, but each and every procedure gives me a "/* DDL not accesible */" error. I get teh same results for views, triggers and indexes.
Can someone help me? I have been googling for days!
Edited by: user4714217 on Jan 24, 2013 12:54 PM

SELECT v.vnd_c, CASE v.use_parent_addr_flg WHEN 0 THEN a.str_1 ELSE pa.str_1 END AS str_1,
CASE v.use_parent_addr_flg WHEN 0 THEN a.str_2 ELSE pa.str_2 END AS str_2,
CASE v.use_parent_addr_flg WHEN 0 THEN a.str_3 ELSE pa.str_3 END AS str_3,
CASE v.use_parent_addr_flg WHEN 0 THEN a.city ELSE pa.city END AS city,
CASE v.use_parent_addr_flg WHEN 0 THEN a.state ELSE pa.state END AS state,
CASE v.use_parent_addr_flg WHEN 0 THEN a.zipcode ELSE pa.zipcode END AS zipcode,
CAST((CASE v.use_parent_addr_flg WHEN 0 THEN (CASE a.foreign_flg WHEN 1 THEN 'Y' ELSE 'N' END)
ELSE (CASE pa.foreign_flg WHEN 1 THEN 'Y' ELSE 'N' END) END) AS char(1)) AS foreign_flg,
CASE v.use_parent_addr_flg WHEN 0 THEN a.country ELSE pa.country END AS country,
CASE v.use_parent_addr_flg WHEN 0 THEN a.cre_d ELSE pa.cre_d END AS cre_d,
CASE v.use_parent_addr_flg WHEN 0 THEN a.mod_d ELSE pa.mod_d END AS mod_d,
CASE v.use_parent_addr_flg WHEN 0 THEN a.mod_by ELSE pa.mod_by END AS mod_by
FROM dbo.om_vendor AS v LEFT OUTER JOIN
dbo.om_address AS a ON a.vnd_id = v.vnd_id AND a.addr_c = 1 INNER JOIN
dbo.om_owner AS o ON v.owr_id = o.owr_id INNER JOIN
dbo.om_address AS pa INNER JOIN
dbo.primary_vendors AS pv ON pa.vnd_id = pv.vnd_id ON o.part_id = pv.part_id
WHERE (pa.addr_c = 1)
WHICH TRANSLATES TO
SELECT v.vnd_c ,
CASE v.use_parent_addr_flg
WHEN 0 THEN a.str_1
ELSE pa.str_1
END str_1 ,
CASE v.use_parent_addr_flg
WHEN 0 THEN a.str_2
ELSE pa.str_2
END str_2 ,
CASE v.use_parent_addr_flg
WHEN 0 THEN a.str_3
ELSE pa.str_3
END str_3 ,
CASE v.use_parent_addr_flg
WHEN 0 THEN a.city
ELSE pa.city
END city ,
CASE v.use_parent_addr_flg
WHEN 0 THEN a.STATE
ELSE pa.STATE
END STATE ,
CASE v.use_parent_addr_flg
WHEN 0 THEN a.zipcode
ELSE pa.zipcode
END zipcode ,
(CASE v.use_parent_addr_flg
WHEN 0 THEN (CASE a.foreign_flg
WHEN 1 THEN 'Y'
ELSE 'N'
END)
ELSE (CASE pa.foreign_flg
WHEN 1 THEN 'Y'
ELSE 'N'
END)
END) foreign_flg ,
CASE v.use_parent_addr_flg
WHEN 0 THEN a.country
ELSE pa.country
END country ,
CASE v.use_parent_addr_flg
WHEN 0 THEN a.cre_d
ELSE pa.cre_d
END cre_d ,
CASE v.use_parent_addr_flg
WHEN 0 THEN a.mod_d
ELSE pa.mod_d
END mod_d ,
CASE v.use_parent_addr_flg
WHEN 0 THEN a.mod_by
ELSE pa.mod_by
END mod_by
FROM om_vendor v
LEFT JOIN om_address a
ON a.vnd_id = v.vnd_id
AND a.addr_c = 1
JOIN om_owner o
ON v.owr_id = o.owr_id
JOIN om_address pa
JOIN primary_vendors pv
ON pa.vnd_id = pv.vnd_id
ON o.part_id = pv.part_id
WHERE ( pa.addr_c = 1 );
Edited by: user4714217 on Jan 24, 2013 1:43 PM

How to convert SQL Server hierarchical query (CTE) to Oracle?

How to convert SQL Server hierarchical query (CTE) to Oracle?
WITH cte (col1, col2) AS
SELECT col1, col2
FROM dbo.[tb1]
WHERE col1 = 12
UNION ALL
SELECT c.col1, c.col2
FROM dbo.[tb1] AS c INNER JOIN cte AS p ON c.col2 = p.col1
DELETE a
FROM dbo.[tb1] AS a INNER JOIN cte AS b
ON a.col1 = b.col1

See: http://download.oracle.com/docs/cd/B19306_01/server.102/b14200/statements_10002.htm#i2129904
Ah, just spotted it's a delete statement - you won't be able to do it using subquery factoring in Oracle.
I had a go at trying to convert for you, but notice that you reference the cte from inside the cte... I can only assume you have a table called cte too...
DELETE FROM dbo.tb1
WHERE col1 = 12
OR col2 IN (SELECT col1 FROM cte)
Edited by: Boneist on 22-Jun-2009 09:19

Migration from SQL server to Oracle

Hi,
Has anybody done migration from the SQL server to Oracle? If so, what manual method do you recommend? I'm a new college grad and I would like to get your expertise, if you have done this in the past.
Thanks in advance!
Sho

It is some time back, so I do not remember the specifics. Oracle gives Oracle Migration Workbench for free. You can use it to convert all SQL tables and procedures etc to oracle. It is not that difficult. If there are no stored procedures etc, you can just extract the DDL and create the tables with minor changes to the script. You might need bcp-sqlloader/trasparent gateway etc copy the data.
Giby

Migration from SQL Server to Oracle database

I have got 2 questions:
1. We are planning to convert our OLTP sql server databases to oracle databases. I tried using SQL Developer to migrate a small sql server database to oracle database(size 5Gb). It was fine. when I tried to migrate another database(size 90G), it is taking too long. The problem with sql developer is I cannot choose and pick tables. out of 250 tables, I need to migrate abt 80 tables(size will be abt 50G). can anybody share their experiences, if any, in converting medium size sql server databases to oracle databases? any others options??
2. I am planning to convert sql server ddl to oracle ddl. I am testing bcp out and use sql loader to import the data. Right now, I am manually creating oracle tables from sql server tables. I am using http://download.oracle.com/docs/cd/E11882_01/gateways.112/e12069/apa.htm#BABCIIDI to convert the code. Are there any other better ways to convert sql server DDL to Oracle DDL?
Thanks in advance

DDLs should be converted manually. Oracle is not SQL-Server.
If you for example have the partitioning option, you should consider using partitioning and local indexes where possible. Not all tables need to be hash tables. Do you defer segment creation or not? What is the type of tablespace? Do you set percentages for free and used to manage when the data block is on the free list and how much is reserved in the data block for updating rows in that block?
There are numerous considerations to make in terms of the physical database design.
Using BCP and SQL*Loader sound good. SQL*Loader is fast and scalable - am using it to load up to 3.6 million rows every 60 seconds. Direct and parallel loads provide the best performance in this regard (assuming that the underlying table structure and usage supports this approach).

Migration from SQL Server to Oracle 8i

Hi,
what are the general issues to be considered when migrating a database from SQL server to Oracle 8i.
Is it documented on the web/ or any publication
Samit

What we did was to create the schema using migration work bench and then transfer the data using data junction
The main issues that you have to handle are
1) Data type issue, here problem comes converting chars to varchars as chars are padded and may not work in indexes, so you have to trim the afterwards, and if you have any image type data types in Sqlserver, you can use either lobs or long raw, it again depends upon your application, if you uses lobs you may have to recode your application
2) Sql statements, Oracle cannot understand Sqlserver sql statements, so you have to convert them all. Sqlserver allows two outerjoins to a table, Oracle does not, so you have to modify your functionality
3) Connections to the database. if you are using ODBC then use Oracle ODBC drivers and the latest ones, otherwise you may encounter memory leaks.
These are from the top of my head, if you have any specific problem I may be able to help.
Good luck

Converting SQL SERVER to Oracle

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