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General experiences from ehp3 to ehp4

former_member263733
Participant
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We are considering the move from ehp3 to ehp4 pending some input and consent from our business units.

Our issue is that applying ehp3 was very "painful". It took a long time and was technically very challenging. We have since had turnover in our SAP system administration team and have a very thin team both in numbers and experience.

Consequently, we were wondering in general terms what we might expect based on others experience. Both in terms of time to prepare and implement.

We have been doing some preliminary investigation into this issue and are aware of then necessity to completely understand the EHP installer and Solution manager integration, but are also interested in any other practical "lessons learned".

We have read many "official" claims of reduced effort and downtime, but have also heard of actual implentations that aren't exactly in line with these expectations.

So again, any general review would be a great help!

thanks,

Jeff Henke

We-Energies

Accepted Solutions (1)

Accepted Solutions (1)

Former Member
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Hello,

We also had a lot of problems with EHP3, especially with very long elapse times to implement all the patches via SPAM/SAINT.

EHP4 however went very smoothly, EHP4 uses the EHP installer which limits the downtime significantly (downtime only 5 hours in our case).

What I always recommend is the following link :

http://service.sap.com/erp-ehp

Especially the document "Must Know", explains very well the lifecycle of the EHP installation, from preparation phase to implementation phase.

The document also contains very interesting SAP Notes and also explains how the Solution Manager MOPZ should be used and configured.

Preparation is the key factor in a successfull EHP implementation, this document is a good starting point.

Success !

Wim

Answers (3)

Answers (3)

Former Member
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Hi Jeff,

Dont know how relevent this would be to situation. But, if you follow my thread in the link given below. That I will surely say is the leason that I learned.

It took us about 10 days time for the installation on a Test system which was upgraded from ERP 6.0 EHP 0 to ERP 6.0 EHP 4 Stack 4.

Edited by: Antony Chaitanya on Nov 18, 2009 6:40 AM

markus_doehr2
Active Contributor
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EHP4 is basically a complete system upgrade, like going from 4.7 to ERP 6.0 - technically spoken. SAPehpi is a slightly different SAPup with the necessity of using an .XML file. Apart from that the technical implementation and the phases are identical to an upgrade.

Markus

Former Member
0 Kudos

Hi,

Just to share our experience : We just did our first upgrade from ECC6 EHP 0 to ECC6 EHP 4 on a testbed system (copy of production system).

It took us 3 weeks to succeed because there were a lot of issues to solve with Solman and EHPinst.

There were tons of OSS notes to read and understand.

Of course, it will take us much less time for the next system (dev system)

On of the big problem is to make the functional consultants understand the EHP concept and get them to work on the subject in order to get the needed business functions.

Regards,

Olivier