Compatibility between 32bits and 64bits

[Former Member]

Hello all,

We have a 3 systems landscape of SAP R/3 4.6C (DEV,TST,PRD) running on Windows 2003 server 32bits.

We plan to swap PRD server with a windows server 2003 x64.

Do you think we'll have side effects ? For transports for example...

We also have a 3 systems landscape of SAP BW 3.5 on 32 bits.

May us encountered problems, for load between R/3 and BW ?

Thank you in advance...

Regards

[former_member204746 · Accepted solution]

no problems for compatibility.

Obviously, your kernel will be different between your systems, so, it will be impossible to really test out a new 64 bit kernel in a non-PROD system before applying it to your PROD system.

I would preferably install my QAS system as a 64-bit system too. this would enable you to make sure that your kernel is tested out first.

[Former Member · Accepted solution]

Thanks for your answer.

I'll have to order a new server to install that system.

Do you know if SAP R/3 & Oracle x64 supports new processors with 6 cores ?

[markus_doehr2 · Accepted solution]

Oracle doesn't care about how many cores if you hardware vendor supports your operating system.

Usually less cores and more physical CPUs are faster than many cores and fewer physical CPUs.

Markus

[former_member204746 · Accepted solution]

SAP R/3 will support multiple CPU cores, no problems.

you won't get charged more SPA license fees for that.

but expect to pay more for other utility such as your backup utility which license fees may be based on processor count.

[nelis]

also check [Note 960769 - Windows: Migration from 32-bit to 64-bit (x86_64)|https://service.sap.com/sap/support/notes/960769]

Regards,

Nelis

[markus_doehr2]

no issue between 32 and 64 bit, you could even use different operating systems and/or databases.

Markus