Upgrading to EHP1 SP19

Hello,

as I m shortly before an upgrade from SP15 to EHP1 SP19 I m trying to do my homework and stumbled upon a few questions. (I already checked the blog that everyone quotes 😉)

1. Can I upgrade straight from SP15 to EHP1 SP19? Or will this cause too much issues, ie. should I upgrade to SP17 first before proceeding to EHP1?

2. For those who have done the upgrade to EHP1 already... how long did the upgrade take? Including all the repairs and work after the upgrade. To get a rough glimpse at the time schedule...

3. Can I upgrade the kernel to the 7.01 version (patch 23 I think?) before the upgrade, or is that something that I have to do during the upgrade process.

Thanks in advance for any help!

cheers,

Walter Greiner