Homogeneous System Copy - IBM i - Tips needed

[martimmendes]

Hi guys,

     It is very possible that in a matter of weeks i'll be in the need of doing a Homogeneous System Copy for a new customer on their SAP landscape.

Source: IBM i 6.1 / DB2 6.1

Target:  IBM i 7.2 / DB2 7.2

Normally doing a homogeneous system copy to a newer DB version works with no issues, so i am assuming that this is also possible on IBM i platform with DB2, right? If this is right, should i go with DB dependent or with DB independent method?

Are there any system copy pointers you can give me as an OS/400 rookie?

Thanks in advance for your kind responses.

Best regards.

[volker_gldenpfennig · Accepted solution]

Hi Martim,

yes, it works as described above - you just have to patch up to a supported kernel for 7.2.

This kernel is not 7.20, but e.g. 7.21 ...

All the rest is similar ...

Regards,

Volker Gueldenpfennig, consolut international ag

[martimmendes · Accepted solution]

Hi guys,

Thanks for your kind responses.

Yes , i am planning to first update kernel. The thing is that 7.21 Kernel is fully compatible with both source IBM i 6.1 and IBM i 7.1 but not with IBM i 7.2, and source IBM i 6.1 its not compatible with any EXT kernel.

Any thoughts?

Best regards.

[volker_gldenpfennig · Accepted solution]

Hi Martim,

I do not know, how you want to copy ... but, typically the DB is copied and the kernel is coming from CD or download - so, you would use the EXT Kernel 7.21 on the target site without any issue 😉

Regards,

Volker Gueldenpfennig, consolut international ag

[martimmendes · Accepted solution]

Hi !

   Some years ago i had some issues while doing homogeneous system copies (ECC 6.0 SR3+MaxDB 7.x) when i didn't use the same kernel, but i guess it was maybe because the kernel included with the Installation Master at that time was in a lower patch level than the one i had on the landscape.

     I will patch to 7.20 before using the latest SWPM, then after migration i will update to 7.21 EXT.

Thanks for the help, i really appreciate it.

Best regards.

[christoph_ostrop]

Hi, Martim,

i could not say something to V7R2, we are on V7R1.

but 

the point is, that a SAP homogeneous system copy is not a 1:1 copy,

because SAP is delivering newer components and new default-values in profile-parms within SWPM, such as new Kernel a.s.o.

have a look at this issues:

SAP changed default-values in profil parameter, is a change log available?

> http://scn.sap.com/thread/3515029

SWPM - homogenous system copy - SAP-Gateway (SMGW) security issue

> http://scn.sap.com/thread/3511183

IFS, creating files in user-defined IFS-directory - *PUBLIC authority

> http://scn.sap.com/thread/3514348

HTH

Christoph