database 11.2.0.4+APex 4.X -->-- database 19.13.0.0 + Apex 21

Hi,

we upgrade ebusiness suite 12.1 to 12.2.10

apex is installed under source environment:

database 11.2.0.4+APEx 4.X

and we need to upgrade to (target environment) :database 19.13.0.0 + Apex 21

Can I follow these steps:

1) under 11.2.0.4/apex 4.X : upgrade apex with apexins.sql (version 21)

2) @apex_rest_config.sql

3)@apxchpwd.sql

4) apply catpatch (patch 32598392)

5) stop database and move datafile to target environment

under target database 19.13.0.0

• CDB exist , I execute apex.sql (to install option apex under CDB) <<<<<
• upgrade database (11.2.0.4 to 19.13) via startup upgrade
• plug database as PDB under CDB
• 
  
• ==> Any help ... is these steps seems OK