Automating Data Migration from SQL Server 2005

Hi All,
I need to migrate data from SQL Server 2005 to Oracle DB ( Datawarehouse). The data migration involves updating Dimensions and Fact table. I have got painful job of switching topology to point to over 100 different weekly SQL DBs ( in sequence) and pull the data into DW. How can I automate my ODI process to switch from one after the other.
Any Ideas?
KS

ODI Variables are there to help you with this. Please go through this post at [http://blogs.oracle.com/dataintegration/2009/05/using_odi_variables_in_topolog.html] .
This will show you how to use a variable Oracle data server.
On similar lines you should be able to switch to any of your 100 weekly SQL server DBs.
And loop in a sequence to load data from all of them.
Hope that helps

Similar Messages

Migration from sql server 2005 tables to oracle tables.

Hi,
Kindly give the steps to migrate from sql server 2005 tables to oracle tables.
Kindly advise
Oracle database version:
Oracle Database 10g Release 10.2.0.1.0 - Production
PL/SQL Release 10.2.0.1.0 - Production
"CORE 10.2.0.1.0 Production"
TNS for 32-bit Windows: Version 10.2.0.1.0 - Production
NLSRTL Version 10.2.0.1.0 - Production
Edited by: 873127 on Jul 18, 2011 9:46 PM

Are you migrating or taking continual updates?
If migrating it might be worth considering The SQLDeveloper Migration Workbench (which moves more than just data)..
http://www.oracle.com/technetwork/database/migration/sqldevmigrationworkbench-132899.pdf
Cheers
David

Migrating From Sql Server 2005 to Oracle (Uniqueidentifier Issue)

If i want to migrate from SQL SERVER 2005 to Oracle, How Oracle will deal with my primary key columns in almost all tables having datatype of UNIQUEIDENTIFIER ???
is there any concept of uniqueidentifier in Oracle same as in SQL SERVER ????
Regards

When you migrate your SP's from SQL Server to Oracle the parser basically does 'as good a job as it can' to migrate them.
Luckily, using SQL Developer you are able to look at the source SP and converted SP in windows next to each other and see what oracle has done to them.
You can also paste your SQL Server code into a window and ask SQL Developer to translate it to oracle for you. Use the 'Translation Scratch Editor' on the migration menu if this is something that interests you. I was told that the parser used by the Translation Scratch Editor is different to the parser used when migrating the whole database.

Steps SSIS and SSAS Migration from sql server 2005 to 2012?

steps SSIS,SSRS and SSAS Migration from sql server 2005 to 2012? any precautions to take while migration.
any documentation or any specified steps.

Hi Vijay,
According to your description, you want to migrate SQL Server Integration Services and SQL Server Analysis Services from SQL Server 2005 to SQL Server 2012.
For how to migrate SQL Server Integration Services, please refer to the article:
http://www.bidn.com/blogs/DevinKnight/ssis/2718/upgrading-packages-to-ssis-2012.
In addition, since the issue regards SQL Server Integration Services. I suggest you post the question in the SQL Server Integration Services forums at
https://social.msdn.microsoft.com/Forums/sqlserver/en-US/home?forum=sqlintegrationservices.
For how to migrate SQL Server Analysis Services, please refer to this article:
http://www.codeproject.com/Articles/435703/Migration-from-SQL-server-to.
In addition, since the issue regards SQL Server Analysis Services. I suggest you post the question in the SQL Server Analysis Services forums at
https://social.msdn.microsoft.com/Forums/sqlserver/en-US/home?forum=sqlanalysisservices. It is appropriate and more experts will assist you.
Regards,
Michelle Li

Migration from SQL Server 2005 to Oracle 10g

Dear buddies,
I need to migrate my tables with data from SQL Server 2005 to Oracle 10g. How can I do it in the best possible way?
Please guide me.
Nith

Nith,
I doubt if there is one best practice that can cover all cases of migrating data from sql server to Oracle. l generally find various factors case-by-case that make me chose one approach over the other. Without considering the business case and environment specific factors, some of the things I would like to know would be: The data types of the tables columns, table sizes, number of tables and if this is a one time process or a recurring process.
One of the easiest (some times rather pesky) process would be:
-Dump source data (Sql Server data) into flat files, csv or any preferred format
-Setup a set of staging set of tables in the destination DB (Oracle in your case). You can setup the stage tables to enforce data-types, value sets and even some level of integrity constraints or any data logic or what ever you would like to filter out. Load the flat file data into a set of Oracle stage tables (Sql*Loader would be a good candidate)
-You can always move data from these stage tables to you application tables
You can script this whole process to run as batch or on demand or how ever you would like.
I am sure you can google and find a bunch of proprietary as well as open source tools to do the same with little to a lot of work.
good luck!

Replication Configuration issue after migrating from SQL Server 2005 to SQL Server 2008 R2

Hi All,
This weekend we have migrated one of our Core system from SQL Server 2005 SP3 to SQL Server 2008 R2 SP2. Migration went successful. However when we are trying to Configure transaction replication we are getting below Error:
Msg 21854, Level 16, State 1, Procedure sp_MSrepl_addarticle, Line 573
Could not add new article to publication 'abc' because of active schema change activities or a snapshot is being generated.
Background:
Database compability Changed from 90 to 100.
A quick Help would be appreciated.
Best Regards - Viral
Thanks - Viral

Is a snapshot being generated? the message seems to indicate one is.
looking for a book on SQL Server 2008 Administration?
http://www.amazon.com/Microsoft-Server-2008-Management-Administration/dp/067233044X looking for a book on SQL Server 2008 Full-Text Search?
http://www.amazon.com/Pro-Full-Text-Search-Server-2008/dp/1430215941

Siebel database migration from Sql Server 2005 to Oracle 11g RAC.

Hi,
We would like to migrate our Siebel database from Sql Server 2005 to Oracle 11g RAC. Can you suggest the best way to do that ?
The current configurations are:
Application : Siebel
database : SQL Server 2005
The hardware can be changed if needed. Can you please suggest the best approach ?
Thanks,
Naveen.
Edited by: Naveen Kumar C on Mar 18, 2011 9:10 PM
Edited by: Naveen Kumar C on Mar 18, 2011 11:44 PM

Hi Naveen,
We would like to migrate our Siebel database from Sql Server 2005 to Oracle 11g RAC. Can you suggest the best way to do that ?You will need much more which suggestions.
You will need a Siebel professional which has done this type of migration. Migrating the Database is not a task so hard, after migrating your environment should be functional and healthy it is usually the task problematic.
The hardware can be changed if needed. Can you please suggest the best approach ?We can recommend the minimum recommended, but this documentation already does, you need to do a analysis on your environment and ask a vendor Siebel tell the which is recommended for you and how to find the best "number" for you, in your case is very hard because everything changes.
Check this Step-by-Step
Migrating a Microsoft SQL Server Database to Oracle Database 11g
http://st-curriculum.oracle.com/obe/db/hol08/sqldev_migration/mssqlserver/migrate_microsoft_sqlserver_otn.htm
Regards,
Levi Pereira

Upgrade data base from sql server 2005 to sql server2008

Hi guys,
What is the best way for upgrade my SQL Server 2005 data base to SQL 2008?

It depends on how you want migrate, in-place or side-by-side?
In-place: Run a backup of all databases and then install the new SQL Server version
Side-by-side: Install the new SQL Server, backup all database of old SQL Server and restore them on the new one. Then copy all logins from old to new server.
Olaf Helper
[ Blog] [ Xing] [ MVP]

Migration From SQL Server 2005 to Oracle DB through Oracle SQ Dev Problem

Hi all,
we are trying to do a full Migration from MS SQL Server 2005 to Oracle DB 9.2 i
we are using Oracle SQL Developer V 1.5.3,
the capturing of the DB and the conversion to the oracle model completed succefully
however when we try to generate the scripts from the converted model
the script generation hangs on a sequence and no further progress is made (the script generation pop up keeps still on a certain sequence displaying its name, and thats it )
no error messages are displayed,
how can we know the reason for this? or atleast find a log for whats happening...
any suggestions?
Thank you

Hi,
migrating a sequence shouldn't make a problem. I did a quick test. I created this table in SQL Server:
create table test_seq (col1 int identity(1,1),col2 char(1))
Then I captured the table, converted the table and generated the script. There was no problem.
CREATE SEQUENCE succeeded.
CREATE TABLE succeeded.
Connected
TRIGGER test_seq_col1_TRG Compiled.
As you see, applying the script was also successful.
I am using Oracle RDBMS 11g, I don't know whether this makes a difference. Do you have any 11g instance available to test it?
Can you show me one of the sequences that are causing the hang? Is the CREATE SEQUENCE statement already in the generated script, or not? Your table is for sure more complex than my simple example.
Regards,
Wolfgang
Edited by: wkobargs on Jan 13, 2009 3:01 AM

Data Migration from SQL server best option

Hi all,
I am importing data from SQL server to oracle server, both of them are on different machines. I had suggested DTS to be most viable option to do so, the SQL server team needs to know why DTS, here are the other options that i am aware of
1) Flat files ---delimited flat files data can be loaded into tables using external table since we have oracle 9i
2) using generic connectivity, but it requires changes in configuration files which our dba doesnt apporve , since he says that wud be lot of monitoring and maintenance when there are database upgrades
3) DBlink-- i dont know whether dblink works for oracle to sql server, i think it doesnt work?? correct me if am wrong
and the last is DTS
it wud be of great help if i could know that in such a scenario how good is DTS compared to other options in terms of speed, maintenance and monitoring, also if there are any other options to import the data.
the volume of data is large abt 500000 one time load and then abt 8000 records on a daily basis
thanks
abhishek

2 & 3 are really the same thing. Generic Connectivity allows you to create a database link from Oracle to SQL Server.
SQL Server also has the concept of a linked server that is analgous to Generic Connectivity that would allow you to connect from SQL Server to Oracle and push the changes over.
There are a variety of other ETL tools out there that can handle this sort of thing (Oracle's is Oracle Warehouse Builder (OWB)) in addition to DTS as well.
Personally, I would prefer Generic Connectivity, but that's just me. At one client site, we pull millions of records out of a DB2 database every night and haven't had any issues related to the stability of Generic Connectivity. Realistically, migrating 8000 rows a night is going to be pretty easy no matter what route you take, so it really comes down to what standards your organization has for data transfer and what sort of skillset the developers are going to have.
Justin

Data migration from SQL Server 6.5

Hi,
I would like to migrate data from SQL Server 6.5 to Oracle
8.0.5. I can create flat files using the BCP utility in SQL
Server, but how do I get my Oracle db to recognize the same?
Please help.
Regards
Urmi
null

sohail rana (guest) wrote:
: Hi Urmi,
: Could you please let me know the first step how from where you
: can use BCP utility in SQL Server so that you can get the flat
: file. I have one assignment to do migration.
: Please help
: regards
: Sohail rana
: Urmi (guest) wrote:
: : Hi,
: : I would like to migrate data from SQL Server 6.5 to Oracle
: : 8.0.5. I can create flat files using the BCP utility in SQL
: : Server, but how do I get my Oracle db to recognize the same?
: : Please help.
: : Regards
: : Urmi
There is a new feature in version 1.2.1 of the migration
workbench that will generate the BCP and SQL Loader scripts for
you.
Right mouse click on the 'Tables' component group in the Oracle
Model UI tree and click 'Generate Data Migrate Script...'.
This will place the scripts in the Log directory you have
specified in the Tools -> Options menu. Go to the Logging tab and
enter a valid value for 'Log file directory'.
The data move scripts will be located in the 'Log file
directory'\SQLServer6 directory.
null

DataBase Migration from SQL server 2005 to SQL server 2012

What are the challenges and steps to be taken care for proper migration of the Database.
Applications are using the Visual Studio 2012.
saikalyan

Few things that I can think of -
Verify all logins and users are migrated correctly.
Some of the SQL Server 2005 features/code could be deprecated in SQL Server 2012. Changes could be required before or after migration.
Some of the queries could have different performance (better or worse) on 2012 due to changes in query optimizer.
The applications/SSIS/DTS config files are updated to use the new server/instance name.
DNS alias names from the old servers (if used) are moved to the new server to have minimal impact on connection strings.
Plan for downtime of applications and batch processes.
Notify developers about the migration and the new server name(s)
- Aalam | (Blog)

Issue with migration DB from SQL Server 2005 to Oracle 11.2 using SQL Developer Migration workbench

Hi,
We face an issue while migrating an SQL Server 2005 DB to Oracle 11.2. It fails during the process. I hope someone on the forum has seen this before and can give us some advice.
I use the latest version of SQL Developer with JRE included (3.2.20.09). The JDBC driver to connect to SQL Server 2005 is 1.2.0
Here are the steps we take in the Migration Workbench wizard:
I made an online extract of the SQL Server database.
Using the workbench in SQL Developer I created a migration repository in schema PDM_MIGRATION.
Next I start the migration, it captures the tables fine, but immediately after the start of the conversion I get a failed message without further explanations.
This is the content of the error xml:
<?xml version="1.0" encoding="windows-1252" standalone="no"?>
<log>
<record>
<date>2013-08-14T16:23:32</date>
<logger>oracle.dbtools.migration.workbench.core.MigrationLogResourceBundle</logger>
<level>SEVERE</level>
<class>oracle.dbtools.migration.workbench.core.logging.MigrationLogUtil</class>
<message>Ongeldig naampatroon.: PDM_MIGRATION .MIGR_FILTER</message>
<param>oracle.dbtools.migration.workbench.core.logging.LogInfo@4c12ab</param>
<exception>
    <message>oracle.dbtools.migration.convert.ConvertException: Ongeldig naampatroon.: PDM_MIGRATION .MIGR_FILTER</message>
    <frame>
      <class>oracle.dbtools.migration.convert.ConverterWorker</class>
      <line>1078</line>
    </frame>
    <frame>
      <class>oracle.dbtools.migration.convert.ConverterWorker</class>
      <line>316</line>
    </frame>
    <frame>
      <class>oracle.dbtools.migration.workbench.core.ui.FullMigrateTask</class>
      <line>1002</line>
    </frame>
    <frame>
      <class>oracle.dbtools.migration.workbench.core.ui.FullMigrateTask</class>
      <line>303</line>
    </frame>
    <frame>
      <class>oracle.dbtools.migration.workbench.core.ui.FullMigrateTask</class>
      <line>205</line>
    </frame>
    <frame>
      <class>oracle.dbtools.migration.workbench.core.ui.FullMigrateTask</class>
      <line>159</line>
    </frame>
    <frame>
      <class>oracle.dbtools.raptor.backgroundTask.RaptorTask</class>
      <line>193</line>
    </frame>
    <frame>
      <class>java.util.concurrent.FutureTask$Sync</class>
      <line>303</line>
    </frame>
    <frame>
      <class>java.util.concurrent.FutureTask</class>
      <line>138</line>
    </frame>
    <frame>
      <class>oracle.dbtools.raptor.backgroundTask.RaptorTaskManager$RaptorFutureTask</class>
      <line>515</line>
    </frame>
    <frame>
      <class>java.util.concurrent.Executors$RunnableAdapter</class>
      <line>441</line>
    </frame>
    <frame>
      <class>java.util.concurrent.FutureTask$Sync</class>
      <line>303</line>
    </frame>
    <frame>
      <class>java.util.concurrent.FutureTask</class>
      <line>138</line>
    </frame>
    <frame>
      <class>java.util.concurrent.ThreadPoolExecutor$Worker</class>
      <line>886</line>
    </frame>
    <frame>
      <class>java.util.concurrent.ThreadPoolExecutor$Worker</class>
      <line>908</line>
    </frame>
    <frame>
      <class>java.lang.Thread</class>
      <line>662</line>
    </frame>
</exception>
</record>
<record>
<date>2013-08-14T16:23:32</date>
<logger>oracle.dbtools.migration.workbench.core.MigrationLogResourceBundle</logger>
<level>SEVERE</level>
<class>oracle.dbtools.migration.workbench.core.logging.MigrationLogUtil</class>
<message>Ongeldig naampatroon.: PDM_MIGRATION .MIGR_FILTER</message>
<param>oracle.dbtools.migration.convert.ConverterWorker.copyModel(ConverterWorker.java:1078)</param>
<param>oracle.dbtools.migration.convert.ConverterWorker.runConvert(ConverterWorker.java:316)</param>
<param>oracle.dbtools.migration.workbench.core.ui.FullMigrateTask.doConvert(FullMigrateTask.java:1002)</param>
<param>oracle.dbtools.migration.workbench.core.ui.FullMigrateTask.doMaskBasedActions(FullMigrateTask.java:303)</param>
<param>oracle.dbtools.migration.workbench.core.ui.FullMigrateTask.doWork(FullMigrateTask.java:205)</param>
<param>oracle.dbtools.migration.workbench.core.ui.FullMigrateTask.doWork(FullMigrateTask.java:159)</param>
<param>oracle.dbtools.raptor.backgroundTask.RaptorTask.call(RaptorTask.java:193)</param>
<param>java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)</param>
<param>java.util.concurrent.FutureTask.run(FutureTask.java:138)</param>
<param>oracle.dbtools.raptor.backgroundTask.RaptorTaskManager$RaptorFutureTask.run(RaptorTaskManager.java:515)</param>
<param>java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)</param>
<param>java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)</param>
<param>java.util.concurrent.FutureTask.run(FutureTask.java:138)</param>
<param>java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)</param>
<param>java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)</param>
<param>java.lang.Thread.run(Thread.java:662)</param>
<param>oracle.dbtools.migration.workbench.core.logging.LogInfo@5dc1bc</param>
<exception>
    <message>oracle.dbtools.migration.convert.ConvertException: Ongeldig naampatroon.: PDM_MIGRATION .MIGR_FILTER</message>
    <frame>
      <class>oracle.dbtools.migration.convert.ConverterWorker</class>
      <line>1078</line>
    </frame>
    <frame>
      <class>oracle.dbtools.migration.convert.ConverterWorker</class>
      <line>316</line>
    </frame>
    <frame>
      <class>oracle.dbtools.migration.workbench.core.ui.FullMigrateTask</class>
      <line>1002</line>
    </frame>
    <frame>
      <class>oracle.dbtools.migration.workbench.core.ui.FullMigrateTask</class>
      <line>303</line>
    </frame>
    <frame>
      <class>oracle.dbtools.migration.workbench.core.ui.FullMigrateTask</class>
      <line>205</line>
    </frame>
    <frame>
      <class>oracle.dbtools.migration.workbench.core.ui.FullMigrateTask</class>
      <line>159</line>
    </frame>
    <frame>
      <class>oracle.dbtools.raptor.backgroundTask.RaptorTask</class>
      <line>193</line>
    </frame>
    <frame>
      <class>java.util.concurrent.FutureTask$Sync</class>
      <line>303</line>
    </frame>
    <frame>
      <class>java.util.concurrent.FutureTask</class>
      <line>138</line>
    </frame>
    <frame>
      <class>oracle.dbtools.raptor.backgroundTask.RaptorTaskManager$RaptorFutureTask</class>
      <line>515</line>
    </frame>
    <frame>
      <class>java.util.concurrent.Executors$RunnableAdapter</class>
      <line>441</line>
    </frame>
    <frame>
      <class>java.util.concurrent.FutureTask$Sync</class>
      <line>303</line>
    </frame>
    <frame>
      <class>java.util.concurrent.FutureTask</class>
      <line>138</line>
    </frame>
    <frame>
      <class>java.util.concurrent.ThreadPoolExecutor$Worker</class>
      <line>886</line>
    </frame>
    <frame>
      <class>java.util.concurrent.ThreadPoolExecutor$Worker</class>
      <line>908</line>
    </frame>
    <frame>
      <class>java.lang.Thread</class>
      <line>662</line>
    </frame>
</exception>
</record>
<record>
<date>2013-08-14T16:23:32</date>
<logger>oracle.dbtools.migration.workbench.core.MigrationLogResourceBundle</logger>
<level>WARNING</level>
<class>oracle.dbtools.migration.workbench.core.ui.FullMigrateTask</class>
<message>Building converted model: FAILED : Database Migration : FAILED</message>
<param>oracle.dbtools.migration.workbench.core.logging.LogInfo@15a3779</param>
</record>
Does anybody know what this error means and what steps we should take to continue the migration?
I see the PDM_MIGRATION.MIGR_FILTER is a type.
Many thanks in advance,
Kris

Hi Wolfgang,
Thanks for your reply.
This is how the type MIGR_FILTER looks like:
create or replace
TYPE MIGR_FILTER IS OBJECT (
FILTER_TYPE INTEGER, -- Filter Types are 0-> ALL, 1->NAMELIST, 2->WHERE CLAUSE, 3->OBJECTID LIST
OBJTYPE VARCHAR2(40),
OBJECTIDS OBJECTIDLIST,
NAMES NAMELIST,
WHERECLAUSE VARCHAR2(1000));
I think the repository user has the correct privileges. This is the overview of privileges it has:
SQL> select * from dba_sys_privs where GRANTEE in ('PDM_MIGRATION') order by GRANTEE;
GRANTEE PRIVILEGE ADM
PDM_MIGRATION ALTER SESSION NO
PDM_MIGRATION CREATE CLUSTER NO
PDM_MIGRATION CREATE DATABASE LINK NO
PDM_MIGRATION CREATE PROCEDURE NO
PDM_MIGRATION CREATE SEQUENCE NO
PDM_MIGRATION CREATE SESSION NO
PDM_MIGRATION CREATE SYNONYM NO
PDM_MIGRATION CREATE TABLE NO
PDM_MIGRATION CREATE TRIGGER NO
PDM_MIGRATION CREATE VIEW NO
PDM_MIGRATION UNLIMITED TABLESPACE NO
SQL> select * from dba_role_privs where GRANTEE in ('PDM_MIGRATION') order by GRANTEE;
GRANTEE GRANTED_ROLE ADM DEF
PDM_MIGRATION CONNECT NO YES
PDM_MIGRATION RESOURCE NO YES
Best regards,
Kris

Migration from of database and app from SQL server 2005 to Oracle 10g

Hello Every body,
Lately, I have been requested to migrate one inhouse developed hub application from SQL server 2005 to Oracle 10g. The objective is to move application and also the database to Oracel 10g.
Here is the current platform:
OS Win 2008 64 bit
JDK 1.4.2
JBoss 3.2.5
EJB 2.1
My question is what kind of issues you guys see in above upgrade. As far I know, Schema and Database migration can be done by Oracle workbench. Oracle 10g supports JDK 1.4. Oracle 10g also supports EJB 2.1.
Anything, I need to take into consideration or any risks or problems. I would like to list down all the risks, and accordingly, I am thinking of start the upgrade.
Thanks in advance.
Regards,
Zeeshan Qureshi

In general the Java/J2EE application needs work in the following categories:
1. Connection Settings: Use Oracle JDBC drivers, create new data sources, connection pools and what not. Disable AUTOCOMMIT for Oracle JDBC Connections.
2. For EJBs, you should regenerate the entity beans because some object names/column names might have changed in oracle.
3. Any custom SQL that is in use in the EJBs will have to be ported to Oracle just as you would do in stored procedures and other applications.
4. For Java front-ends, if you are using callouts to stored procedures and expecting result sets then they will require some changes. You need to modify the stored procedure call signature to include the REF CURSOR variables and process them.
5. Changes to any SQL Server specific database functions manipulating character/date data will be required.
6. CLOB/BLOB/XML apis are different across databases so if you are using those then focus on them as well.
7. Retreiving Auto/generated keys from database also may need changes from what I have seen.
Hope this helps..
Regards
Prakash
NOTE: Not sure why but my posts from yesterday are not visible today. Even worse is that I can see them in one browser (FireFox) but not in Internet explorer. Crazy browser day I am having.

MIGRATE ODI FROM SQL SERVER 2005 TO ORACLE

Hello,
Presently we have our master and work repositories in sql server 2005.We also have our source tables in sql server 2005.We are planning to migrate our repositories from sql server 2005 to oracle 10g.We are also migrating our source tables from sql server 2005 to oracle.Do we need to redo all our development in oracle.Can any body help with the steps to migrate our repositories and development work from sql server 2005 to oracle 10 g.
Thanks,
Revanth

dbf it's not sql server.
>
SQL Server databases have three types of files:
Primary data files
The primary data file is the starting point of the database and points to the other files in the database. Every database has one primary data file. The recommended file name extension for primary data files is .mdf.
Secondary data files
Secondary data files make up all the data files, other than the primary data file. Some databases may not have any secondary data files, while others have several secondary data files. The recommended file name extension for secondary data files is .ndf.
Log files
Log files hold all the log information that is used to recover the database. There must be at least one log file for each database, although there can be more than one. The recommended file name extension for log files is .ldf.
>
for dbf to oracle see http://asktom.oracle.com/pls/asktom/f?p=100:11:0::::P11_QUESTION_ID:711825134415

Automating Data Migration from SQL Server 2005

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