Migration , database filesystem to asm Oracle 11.2.0.4
we are migrating an oracle 11.2.0.4 database of filesystem to asm and how the database is very large and time of maintenance may to be sufficient to finish copying the datafiles to asm, i need to understand whether there could be a coexistence 50% or minus of tablespace successfully migrate to asm and 50% or minus of tablespaces on filesystem, it is possible?