Hi,
I am performing EH6 Upgrade on EHP4 System, Database is Oracle and OS is HP-Unix.
We chose Advanced under configuration option with zero downtime option.
I read few documents regarding what exactly happens at backend in SAP system during upgrade and could not clear few doubts -
1) Is there any particular task after which if I login in shadow I can see upgraded software components as I understood upgrade happens in shadow instance and during downtime SUM drop existing instance and rename upgraded instance.
2) What actually happens during DBCLONE and ACT_UPG phase, I understood DBCLONE jobs copy repository and data dictionary in shadow instance and ACT_UPG activates these repository and Data Dictionary objects. Please correct me if my understanding is wrong.
3) What on high level happens in Prepossessing and downtime phase and when It says shadow import what exactly SUM is importing.
4) Is selection option for nZDM and giving number of CRR Process is sufficient to use nZDM or we need to put table list also in file CRRTABLIST.LST to use nZDM feature as we selected this option but transcation CRR_CONTROL is showing "The replication of recorded changes is not enabled"
Regards,
Shivam