How to ODA DB Core Change ?

Hello.

I would like to inquire about various things.

ODA X7-2 HA (Bare-Metal)

  -How to change the DB Core after DB creation

  ( Example: DB Name-ABC / oda-2 (2 cores)

    Whether the DB can be changed to oda-4 (4core)

2.ODA X7-2 HA (Virtualized Platform)

  -How to change the DB Core after DB creation

   ( Example: DB Name-ABC / oda-2 (2 cores)

    Whether the DB can be changed to oda-4 (4core)

3.ODA X7-2 M (Bare-Metal)

  -How to change the DB Core after DB creation

Example: DB Name-ABC / oda-2 (2 cores)

    Whether the DB can be changed to oda-4 (4core)

For example, in case a database suddenly gets busy, I'm wondering if it is possible to increase or decrease the number of cores that have been set.