Is it compatible to connect Oracle 11g client to Oracle 12c BI4 CMS database

Hi

  Due to some reason, we will need to upgrade Oracle in our local systems from 11g to 12c. But the BI4.1 SP4 is still in 11g. Is it OK if we connect from oracle client 11g to BI4.1 12c CMS? Is that compatible?

Thanks

Venkat