Homogeneous systemcopy or Heterogeneous systemcopy ???

[vishalranadive]

migrating system from Solaris SPARC base to SOLARIS Intel base with same database..... This will be a Homogeneous systemcopy or Heterogeneous ??? As far as my knowledge there is no binary compatibility between these two versions like we get in HPUX IA64 base and PARISC base ....

[Former Member · Accepted solution]

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[Former Member · Accepted solution]

HOMOGENOUS !!! It is homogenous.

The copy would be classified as homogenous since no OS/DB change is involved per se.

However with in homogenous system copy export/import method has to be used. Backup/Restore won't work. Often export/import is mistaken for heterogenous copy which is not correct. Expiort/Import can be used for both homoegenous as well heterogenous copy. Back/Restore is purely Homogenous.

Change in endianess will cause the code page to change and that can only be taken care of using export/import. Nevertheless it can be termed homogenous system.

SAP is very very clear on this: If hardware architecture changes but OS remains the same it is homegenous system copy. I other words if O is callled the same on both source and target (SOLARIS) in this case, it is homegenous system copy. Of course this automatically doesn't imply the possibility of backup/restore to copy database ( SAP specifically gives example is of SOLARIS on SPARC and Intel). Further SAP adds that it treats this copy as homogenous and no OS/DB migration check is needed.

What this also means is certified OS/DB migration consultant isn't needed in this case though no harm in having one 🙂

Regards.

Ruchit Khushu.

[JPReyes · Accepted solution]

Hi Ruchit,

You just send me back to the manual and you are right, the overall procedure doesnt change much as you'll need to proceed with and import/export scenario, but it will not be classified as a Heterogeneous System Copy.

Regards, Juan

BTW, great to see you around!

[Former Member · Accepted solution]

It is great for me also to get back in touch with you after a long time 🙂

Regards.

Ruchit Khushu

[Former Member]

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[JPReyes]

Solaris SPARK platform is big endian while Solaris x86 platform is little endian, based on that you'll need to perform a heterogeneous system copy.

Regards, Juan

[vishalranadive]

Thanks a ton Juan !

[Former Member]

Hi Vishal,

I would go for Heterogenous copy (Migration) instead of Homogenous. Please refer official websites and SAP guides before taking decision.

FYI -

" Sun has done an excellent job making Solaris look and run the same on both platforms. This similarity derives primarily from the fact that the codebase for both versions of Solaris is much the same. Only in the portions that talk directly to the hardware do the two implementations diverge. 

One result of this consistency between Solaris on SPARC and on x86 is that the GUI and utilities run much the same, making the process of migration easier. However, a few key differences exist that can affect migration. "

Regards,

Srihari

[vishalranadive]

Thanks Srihari for your valuable input .... but I am worried if I need to go with heterogeneous copy then I will require TADM 70 certified !

[Former Member]

Indeed Yes!! else you require one who is already certified!! .. cheers!!