Need of feedback ,base on your experience

Hi everyone I need recommendations and feedback if possible.
we are grouping 60 differents strores ,separated oracle databases(running the same application,same configuration) into one main server;using a Multi-schema,therefore we will be using one schema=one store=one user because each store has only one user=one trigramme.
total of the dump of the different database=( 120Gb).
has anyone experiences something like this?,are they major problem using a multi schema architecture?,knowing that top max users log on together might be around 100 ,how to find info or recommendation of servers that can managed such configuration?.. thansk again i'm fresh dba learner!!!!

<<<Oracle version? Enterprise Edition? Standard Edition?
My first preference would be for a single schema for all stores - using fine grained access control (FGAC) for creating a virtual private database for each store. I would use table partitioning in order to provide smaller meaningful data sets. I would also look at utilising local partition bitmap indexing.
If you're using Standard Edition (SE), your choices are limited due to the reduced feature set. In that case a lot more detail is needed to determine how the features provided by SE can best be used to address the problem. Unlike the fairly common approach described above on EE, a comprehensive problem description would be needed instead to determine how best to solve it on SE. >>>
Oracle version is ENTREPRISE...
someone told me it would be easy to administer by creating a multi schema architecture...each store=one schema..also all database will be set for read only,no imput info will be added,it's besauce of federal regulation asking to store cust info for 3 years max..
so i was thinking about creating user in the new database using the same trigramm they have already in their own database now..and when i will import the data,i will just match the info<<(imp fromuser=arnica touser=<actual user trigramm in the store>).. arnica is the name of the application running on oracle.. thanks again for the sharing//

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