topic Difference Between Migration and Upgradation in Application Development and Automation Discussions

Difference Between Migration and Upgradation

Former Member — Thu, 09 Aug 2007 07:18:20 GMT

Hi Experts,

Can any one please give me the details about the difference between migration and upgradation.

Thanks,

Nanda

Re: Difference Between Migration and Upgradation

Former Member — Thu, 09 Aug 2007 07:23:58 GMT

Hi,

Upgradation means : applying the advance version of existing software.

suppose to say you are already implemented sap 4.6c version for 'X' Client.Now that client want to apply the enhance version of 4.6c that is 4.7 enterprise version.

For applying 4.7e version on 4.6c this scenario is called upgradation.

Data migration can be done by the follwoing methods:

LSMW : for master data migartion or small data migartion

BAPI : its just like a FM , thru which u can create master aswell as Transactional data.

u have to import some paremetre as well as tables if required, and Bapi will RETURN the message saying so and so material/delievry had cretaed.

BDC : in BDC we got 2 methods.

CAll transaction and session.

CAll transacton : using this u can uplaod transcational data as well as master data.

the updation can be synchronus or asynchronus updates.

Session: using this u can uplaod transcational data as well as master data.

The updation in session is synchronus, so its time taking process.

Most of the time we go for Call transcation In real situations.

Dircet input method: its out dated.no longer it is being used.

in all the above cases, data is alraedy existing in flat file and u r going to migrate the data in one shot but IDOC is used where the dynamical data migration is necessary.

suppose say ones the material is craeted in legacy sytem , that particulat matreial shud be migarted to R/3.this can be handled thru IDOC.

Idoc: master data as well as Trnascational data is migarted thru IDOC( matmas, orders).

Idoc uses ALE technology in migartion of idoc.

Regards,

Priyanka.

Re: Difference Between Migration and Upgradation

Former Member — Thu, 09 Aug 2007 07:24:09 GMT

There are new improved methods and features in the New release.

There is a document which tells the efforts required to complete the Upgradation.

https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/docs/library/uuid/2e8e5288-0b01-0010-2ea8-bcd4df5084a7

The upgration time depends on your landscape.like How big and how many customization done in your system.As per the degree of changes done on the standard objects. The technical upgradation will happen in a faster pace. But to get the full fledge use of this new release you will have to slowly migrate module wise or other word is reengineering.

Regards

Abhay.

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Re: Difference Between Migration and Upgradation

Former Member — Thu, 09 Aug 2007 07:26:04 GMT

According to me , across the platforms is migration and one version to higher version is upgradradation .

Regards

Sourabh Verma

Re: Difference Between Migration and Upgradation

Former Member — Thu, 09 Aug 2007 07:26:46 GMT

Hi,

There are different types of Projects in SAP:

1. Implementation

Customer wants to install SAP/Include different modules of SAP viz. MM/SD/FI/CO/PP etc for the first time.Previously he might be using some legacy system in his orgn. This is implementation project. Here one needs to integrate several modules, migrate data from Legacy system to SAP system. Need to prepare interfaces/RFC's to interact with 3rd party systems.

Most of the company's follow ASAP methodology for the Implementation projects

there are 5 stages in the ASAP methodology

they are

1. Project Initial Preparation

2.Business Blueprint

3.Realization

4/ Final Preparation

5.Golive And Support

ABAP work mostly starts in the Blue print ending stage or in the realization stage

2. Support

Customer has already installed SAP & wants to give the work of maintaining those systems. This is support project

There is no phases in it. Just receive the tickets, solve and send back to client.

3. Upgrade

Customer has SAP Version 4.6b and wants to update his version i.e. wants to go to Version 4.7. This is upgrade project

4. Rollouts

Customer has upgraded his version & wants to rollout country specific changes.

This is rollout project

Please refer to this link, this is very helpful.

http://saptechnical.com/Tutorials/Others/ProjectsType.htm

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Re: Difference Between Migration and Upgradation

Former Member — Thu, 09 Aug 2007 07:28:51 GMT

Upgradation version upgrade 3.1 to 4.7 ,ecc.6.00.....

Migration

upload data to sap system tables.

bdc

lsmw,

idoc,

bapi

ale,etc......

Re: Difference Between Migration and Upgradation

Former Member — Thu, 09 Aug 2007 07:32:47 GMT

Hi,

Migration

upload data to sap system tables.

Upgrade

Customer has SAP Version 4.6b and wants to update his version i.e. wants to go to Version 4.7. This is upgrade project.

Regards

Re: Difference Between Migration and Upgradation

Former Member — Thu, 09 Aug 2007 07:40:14 GMT

Migration

migrating the data from one sercer to another server

it can be done by BDC or LSMW

upgradation

its related to Vertion change

like 4.7 ERP to ecc 5.0

reward if usefull