SAP Database Migration from Oracle to DB2

Hi All,
Our client has decided to move the SAP database from Oracle 10.0.2 to IBM DB2. We will like to know list of activities which are required to be done from application side to support this.
Also we want to know on how to find the report / interfaces where the code is written in native SQL (PL SQL) and not in open SQL (ABAP).
Any pointers in this regard will be useful. Thanks.
Best Regards,
Vithal

> Our client has decided to move the SAP database from Oracle 10.0.2 to IBM DB2. We will like to know list of activities which are required to be done from application side to support this.
http://service.sap.com/osdbmigration
> Also we want to know on how to find the report / interfaces where the code is written in native SQL (PL SQL) and not in open SQL (ABAP).
I don't think there's an easy way to find that out.
Markus

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Re Migrating from Oracle to DB2

Hi All,
We are migrating from Oracle to DB2, so just wanted to know what will be the impact when we do this, i mean what all necessary steps should be taken to do so. I am a technical consultant involved in this project so not much idea regarding this.
Also please let me know will it effect the custom i mean the Z programs that we have created. Please let me know regarding this.
Thanks and Regards,
Salish.

> We are migrating from Oracle to DB2, so just wanted to know what will be the impact when we do this, i mean what all necessary steps should be taken to do so. I am a technical consultant involved in this project so not much idea regarding this.
A heterogeneous migration (changing database and/or operating system) implies a certified migration consultant doing the migration, otherwise you'll loose support from SAP for problems during the migration and for the target system (http://service.sapcom/osdbmigration --> FAQ).
> Also please let me know will it effect the custom i mean the Z programs that we have created. Please let me know regarding this.
Depending on how you access the data you may need to increase/delete indexes or change the programs to get a better speed.
Markus

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Can any help me to create a database link from oracle to db2. It would be greatful if you can provide me detail steps

You don't give us much information to go on. What version of Oracle? What platform is DB2 running on? You might want to take a look at this. You might also look here and here.
Tom

Migration from Oracle to DB2 UDB on Unix

Hi SAP Expert
We have different SAP landscape in our company on Oracle DB
Due to High Oracle Licensing cost we are planning to migrate our Database to DB2 to reduce license cost
I would like to know how Reliable DB2 is for SAP? What is % of SAP installation on DB2 worldwide
Also will there be challenge migrating DB from Oracle to DB2
I would appreciate if you can provide guidance on the question
Thanks in advace
Thanks
Deelip

> I would like to know how Reliable DB2 is for SAP? What is % of SAP installation on DB2 worldwide
DB2 was and is used on quite a number of internal SAP systems that create support packages (if you check the import logs of the support packages and search for "source system).
SAP doesn't give any exact numbers of installations compared to other databases, they did that in the past.
> Also will there be challenge migrating DB from Oracle to DB2
As with every database migration you'll have to check your custom programs and secondary indexes, backup strategies and methods and such.
> I would appreciate if you can provide guidance on the question
Be aware of the fact that you must have a certified migration consultant doing the migration on-site, otherwise SAP will deny OSS support and bill (see http://service.sap.com/osdbmigration).
Markus

Regarding database migration from Oracle to MS SQL

Hi All,
In my application, the existing database is oracle. we need to migrate from Oracle db to MS SQL.
We need procedure is as below
1.export data from Oracle and keep it in a file.(.dmp)
2.Import data to MS SQL from the exported oracle file.
and vice versa from MS SQL to Oracle.
my question is- is it possible to import .bmp (oracle export data) into MS SQL.
Please clarify me.

There are couple of options to get data from Oracle to MS SQL.
The simplest is to create a linked server in MS SQL that points to Oracle and copy data with a query like select * into my_mssqlTable from oracle.schema.table; via the linked server.
Some data types will not be supported.
That is for one time copy.
If you need a close to real time replication you can use MS replication (I would not recommend because it creates triggers on Oracle tables), or you can use GoldenGate or DataCurrents or other replication products.

What are the risk involved in Database Migration from Oracle 7 to oracle10G

HI,
As a business requirement me are need to migrate our current production database (Oracle 7.3.4) to Oracle 10G R2.
I need to understand the Risk involved in doing so and corrective action required.
Your small input is greatly appreciated.
Thanks in advance.
Regards,
Vijay

As a business requirement me are need to migrate our current production database (Oracle 7.3.4) to Oracle 10G R2.
There is no risk.
but you can't upgrade directly from 7 to 10g.
you need to upgrade first 7 to 9 then 9 to 10g ( i would recommend to go with 11g)
Or
If database size is small the best is EXPORT /IMPORT. easy fast safe.
http://tahiti.oracle.com ===check the upgrade guide for more details.
You need to test the completely upgrade process on TEST eviourment before doing anything in production.
becuase a lots of changes between two database version.
1. You may be face "Performance" issue after upgrade. so need to check properly.
Regards,
Taj

SAP BW migration from oracle bi with BO

We have presently Orcale BI with BO and we want to migrate in to SAP BW 7.0 . We have SAP SD,MM,FI,Self service,QM module for reporting with MDM . We have do solution design and rollouts . Is it we require functional people for this project. Is it BO-BI integration project? . We are considering BW,BO,EP,ABAP, basis and function module people . Is it this staffing is correct ?.
How we can do existing orcale BI with BO to SAP BW 7.0 . we have 46 system as of now and we want to migrate all to SAP BW . What is the approch for this .
Thanks
RB

Hi,
Recently I have done similar kindly of implementation (Green field)
Assumption
Existing report are fixed no more requirement changes
Best approach
BODS is more flexible to load data to BW and reduce abap coding by 70% instead of Oracle to BW
Go by phase wise
Please kindly see answer are inline
Is it we require functional people for this project.
Yes we need them but for touch basis not full time. (At the time of requirement and reconciliation )
Is it BO-BI integration project? .
Yes
We are considering BW,BO,EP,ABAP, basis and function module people . Is it this staffing is correct ?.
   EP no need according to your requirement your are not going by portal
You may required below stuffing
Primary stuffing ( one who will be there end to end for project and experience level above 5 years )
Project Manager/Technical Manager - if he is good in BW ( most welcome)
BODS(2) - 1. strong knowledge with BW and BODS integration developer and BW knowledge
          2. Database modelling consultant for to split master data and Transaction data and mapping document.
             (usually oracle has master data and transaction data in single table but bw will have separate table)
BW(1) - one Strong Techno functional
BO(1) - one strong knowledge with BO and BW integration consultant.
ABAP(1) - One strong in BW Modelling along with BW ABAP
BASIS(1)
BO Admin(1)
Secondary stuffing (experience level less than 3 years )
BW(3) - Three Reporting developer
BO(2) - Two Reporting developer
ABAP(1)
Please do let me know
Regards,
Manoj.

Database migrated from Oracle 10g to 11g Discoverer report performance issu

Hi All,
We are now getting issue in Discoverer Report performance as the report is keep on running when database got upgrade from 10g to 11g.
In database 10g the report is working fine but the same report is not working fine in 11g.
The query i have changed as I have passed the date format TO_CHAR("DD-MON-YYYY" and removed the NVL & TRUNC function from the existing query.
The report is now working fine in Database 11g backhand but when I am using the same query in Discoverer it is not working and report is keep on running.
Please advise.
Regards,

Pl post exact OS, database and Discoverer versions. After the upgrade, have statistics been updated ? Have you traced the Discoverer query to determine where the performance issue is ?
How To Find Oracle Discoverer Diagnostic and Tracing Guides [ID 290658.1]
How To Enable SQL Tracing For Discoverer Sessions [ID 133055.1]
Discoverer 11g: Performance degradation after Upgrade to Database 11g [ID 1514929.1]
HTH
Srini

Migration from Oracle 9i database to 10g in ECC5

Hi Experts,
We are planning to move our production system which is currently running ECC5 on AIX OS and Oracle 9i database to AIX OS and Oracle 10g database.
Some doubts regarding the above procedure:
1)Is there any possibility of SAP system migration from Oracle 9i to Oracle 10g. If yes, do we need to perform any addinitional steps for that?
2)If the above condition is OK, then what type of system copy should we need to follow: Homogeneous or Heterogeneous? Heterogeneous system copy is ususally done incase of system copy involving different databases. Does that apply for differnt versions too like Oracle 9i and 10g?
Any response is highly appreciated.
Regards,
Sanjay

If i'm using the dbua then the above issue will be solved by dbua itself?Well, DBUA will only perform a sanity check on your current release and if it doesn't pass it will fail. In other words DBUA will not upgrade your 9i release to the proper compatible release that you have to do before upgrading to 10R2.
Personally I never used DBUA, I always prefer manual upgrades, DBUA is good for you bcz it will not allow you to miss any step while upgrading.
What is the size of the database which you are going to upgrade?
Daljit Singh

Oracle E-business suite database migrate from AIX to Linux

Oracle 11i application database migration from single Aix instance to oracle Linux cluster RAC.
What is the easy way to migrate?
Migrate single instance from aix to linux cluster.
OR
Migrate single instance from aix to linux cluster RAC.
We have installed oracle Linux cluster.
Please help me which way I can go with RAC.
Thanks
Prince

Migrating to a single instance will be the simplest. The migration itself will not be much different between the two because you're migrating from one platform to another. The options you have available are, the traditional IMP/EXP, datapump, and RMAN to migrate to either a standalone or RAC environment. The difficulty will be in creating a RAC environment and a little a few extra steps in the RMAN restore. Working with RAC will make things harder, but the actual migration is similar. The steps to IMP/EXP, whether it's traditional or Datapump will be no different. However, standing up a RAC database will be.

Unable to connect to database after migration from oracle 8 to 9i

Hi,
Our applications database was migrated from oracle 8 to oracle9i, The oracle_home path was updated to the newer version.
While accessing the databese using the new setup we are facing SQLLIB mismatch problem
the description of error is as follows
=======================================================
SQL-02107 Program too old for runtime library; please re-precompile it
Cause: Your program was precompiled by an older version of the Oracle Precompilers, which is incompatible with this release of SQLLIB.
Action: Precompile the program with a newer version of the Oracle Precompilers
=========================================================
Please help in this regard
~akhil

Hi Akhil,
Looks like some Tuxedo services are using Pro*C code. Therefore, you would need to recompile your Pro*C code using the newer compiler and then rebuild the Tuxedo servers.
HTH,
Ravi...
Hi,
Our applications database was migrated from oracle 8
to oracle9i, The oracle_home path was updated to the
newer version.
While accessing the databese using the new setup we
are facing SQLLIB mismatch problem
the description of error is as follows
======================================================
=
SQL-02107 Program too old for runtime library; please
re-precompile it
Cause: Your program was precompiled by an older
version of the Oracle Precompilers, which is
incompatible with this release of SQLLIB.
Action: Precompile the program with a newer version
of the Oracle Precompilers
======================================================
===
Please help in this regard
~akhil

What are the Issues in Migration from oracle 8i to oracle 10g

Hi,
Can you let me know what are the issues that i face when i migrate from oracle 8i to oracle 10g. I will be very thankful if you give me a list of issues that you face while migrating from 8i to 10g

In addition to Max's reply, you must be aware that you have to test your applications agains 10g database before you actually upgrade the database.
If you use CBO, it may produce different execution plans for one query when you run it in 8i and 10g. This may affect your application performances, which you don't like to happen.
Also you have to decide how much downtime you can afford during the migration. Can you afford some downtime and how much? If you can't than this makes the situation more complicated.
How big is your database? You may end up only with simple export/import solution using export import utility.
The bottom line is, whatever you decide, you must test your applications running against 10g database before you actually upgrade your database.

MIgration from Oracle 9.2.4.0 to Oracle 10g Release 2 (10.2.0.1.0)

Hello
We are planning to upgrade and migrate from Oracle 9 to Oracle 10. ( both version on windows)
Would be of great help if I could avail the below information.
Most of the Instance are more than 50 gig
1 Should use a EXP / IMP or Should use DBUA ( prefer a safe method )
2.IF DBUA used any idea how much time it should take .
3.Any other method for upgrade.
We are currently in an analysis phase , we do have some instance that are already 10g but were created from scratch.
Thanks for all your help in advance
Cheers

Most of the Instance are more than 50 gig
1 Should use a EXP / IMP or Should use DBUA ( prefer
a safe method )Use DBUA , it is safer then exp/imp
2.IF DBUA used any idea how much time it should take
It depend on database , machine etc. it should not take more then 2-3 Hr
3.Any other method for upgrade.
I always use manual method and feel manual upgrade is safest.
All details is given in Oracle Documentation
Oracle Database Upgrade Guide
# Virag Sharma

Performance issue with view selection after migration from oracle to MaxDb

Hello,
After the migration from oracle to MaxDb we have serious performance issues with a lot of our tableview selections.
Does anybody know about this problem and how to solve it ??
Best regards !!!
Gert-Jan

Hello Gert-Jan,
most probably you need additional indexes to get better performance.
Using the command monitor you can identify the long running SQL statements and check the optimizer access strategy. Then you can decide which indexes might help.
If this is about an SAP system, you can find additional information about performance analysis in SAP notes 725489 and 819641.
SAP Hosting provides the so-called service 'MaxDB Migration Support' to help you in such cases. The service description can be found here:
http://www.saphosting.de/mediacenter/pdfs/solutionbriefs/MaxDB_de.pdf
http://www.saphosting.com/mediacenter/pdfs/solutionbriefs/maxDB-migration-support_en.pdf.
Best regards,
Melanie Handreck

Dblink from oracle to db2

Hi all,
please, can you explain me steps to create a database link from Oracle 10gR2 to DB2?

Hi,
You need to install one of the Database Gateways -
11.1 Database Gateway for DRDA (DG4DRDA)
11.2 Database Gateway for DB2 (DG4DB2)
11.1 or 11.2 Database Gateway for ODBC (DG4ODBC)
After the gateway is installed and configured then you create the database link which uses the gateway to manipulate data on DB2 - select, insert, update and delete, for example -
select * from db2_table@gateway_db_link ;
The database link is created using a tnsnames.ora entry which references the gateway setup.
There is further information on the gateways available on My Oracle Support and OTN.
If you want more specific detail then let us know -
- if you have a gateway installed already and which one if so
- what version of Oracle you are using
- platform where Oracle is running
- version of DB2 to access
- platform where DB2 is running
Regards,
Mike

SAP Database Migration from Oracle to DB2

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