Install, Upgrade, Clone, Patch - EBS (MOSC)

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11.5.8 -> 11.5.10.2 : is it possible to upgrade the DB first (9i -> 11gR2)?

edited Aug 20, 2021 10:00AM in Install, Upgrade, Clone, Patch - EBS (MOSC) 5 commentsAnswered
  HI,The standard procedure states that DB is upgraded after the applications. I'm currently starting an upgade project and i'm wondering why this order has been choosed. My EBS 9i database is around 6Tb and my downtime window for production upgrade is 48h max. I'm wondering if i cannot gain on applications upgrade processing time if my DB is upgraded first in 11gR2?

If i'm patching only my 11.5.8 with necessary FND,AD and interop patches, is it working (even if it's not supported)?

Regards
Christophe

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