OS MIGRATION

[Former Member]

Hi Sap Guru's,

i need help from u r side regarding the sap os migration ,my requirement is

Source System----Windows Server 2003

Target system red hat linux 5.5

Database oracle 10g

please reply asap.,please help me my project is starting on coming monday(18april 2011)

thanks in advance

cheers

j Bhanu prakash

[Former Member · Accepted solution]

Hi,

I suggest you to go though homogenous system copy guide for your version of NW.

Ensure the following things are in place

- Download the appropriate SAP installer kit.

- Upgrade the source kernel to that same level.

- your source Disk space is sufficient to hold export.

- mechanism to move dump to target is in place.

- Have sure you have enough disk to increase your temp and undo TS.

- Then run SAPinst initial checks and find out if everything is ok

- Then start with export.

- Move this dump to target.

- Install with SAPinst using this dump.

[markus_doehr2 · Accepted solution]

> I suggest you to go though homogenous system copy guide for your version of NW.

This is a heterogeneous migration (Windows to Linux)

Markus

[Former Member · Accepted solution]

Oh yes its heterogeneous system copy.

Then you might need to install few packages and adjust some Linux kernel parameters, if you Linux is not SAP ready.

[Former Member · Accepted solution]

Hi Markus,

One more point since this is OS change database specific methods should be fatser than R3load based system copy.Markus what do you say.

[markus_doehr2 · Accepted solution]

> One more point since this is OS change database specific methods should be fatser than R3load based system copy.Markus what do you say.

This doesn't work. You can import a backup taken on Linux to Windows or vice versa. This is described in the system copy guide.

There are other methods to move the database - like "transportable tablespaces" and "Oracle to Oracle online". However, you won't get around having a certified consultant on-site to do the migration, in any case.

Markus

[Former Member]

Hi,

I suggest you to go though homogenous system copy guide for your version of NW.

Ensure the following things are in place

- Download the appropriate SAP installer kit.

- Upgrade the source kernel to that same level.

- your source Disk space is sufficient to hold export.

- mechanism to move dump to target is in place.

- Have sure you have enough disk to increase your temp and undo TS.

- Then run SAPinst initial checks and find out if everything is ok

- Then start with export.

- Move this dump to target.

- Install with SAPinst using this dump.

[former_member709110]

Hi,

What sort of help are you looking for ? You need to be specific about what info/answer you are looking for.

Just in case, you want to know where to start from .... i would suggest go through the link below first

http://service.sap.com/instguidesnw (for sysem copy guide for your SAP version)

Also please note if your Migration Project involves Production System , it is mandatory to have a person who is SAP Certified on OS/DB Migration

Regards,

Neel

[Former Member]

thanks For Giving the information.

What is the Prerequisite for OS/DB migration?

[former_member709110]

First thing is you need to check is PAM to ensure that your SAP Version and the target OS & DB combination is supported or not.

If you are using any 3rd party softwares with SAP , find out if you have a version available for the target OS or not.

Analyses the impact of OS change on the interfaces

Also find out how much OS specific customization has been done by the developers , bcoz that needs to change.

Again as mentioned in previous note , for Production System OS/DB Migration Certified person is must.

Regards,

Neel

[markus_doehr2]

> What is the Prerequisite for OS/DB migration?

Please just read the system copy guides on the link given. If you check them, you'll find all necessary information and notes for it.

If you've never done an operating system migration I highly suggest getting a certified consultant on-site, see http://service.sap.com/osdbmigration

Markus