RAC is a shared environment to our application DB

Hi experts,

Now our application is connecting to a schema in 10.2.0.3 DB running on Solaris. We also have the new 11.2.0.2 RAC DB in Linux. And we're going to export the schema in 10G and import it into the 11.2G RAC DB instance, and application will connect to the schema in 11.2G RAC instance. The 11.2G RAC has 6 instances, and our application only occupies one of them while other applications may occupy the others.

My concern is, in such shared RAC environment, compared with the standalone DB, is there any impact when migrating the schema to RAC environment? Note that we share the RAC environment with others.