Hi All,
This question suddenly popped into my mind where during EHPI upgrade, before we start "Downtime", EHPI would advise us to take a full backup after completed "pre-processing" where shadow instance is built. If thing goes wrong after upgrade where downtime is completed. First of all, we'll restored the database & kernel & profile & etc back to the stage before downtime and after pre-processing. After DB is sucessfully bring up, shadow instance and some EHP version is written to the DB. And my question is, We can't reset the upgrade with EHPI since upgrade is completed, and what's the resolution for resetting and dropping the shadow instance?
What in mind is, we need to backup EHPI directory as well before we run into "downtime" ? And launch EHPI to reset after DB restored?
Appreciate if anyone can shed some light on this.
Cheers,
Nicholas Chang