SSIS package takes longer time when pulling data from Oracle

Hi ,

I have a package in Dev environment where  it takes over 6 mins when loading from a staging table when it is present in SQL Server, but same process takes over 30 mins when pulling from Oracle which is the actual source. are there any best practices when pulling data from other environments into SQL using SSIS. I do know that ssis has to run on 32 bit mode when using Oracle as source but will that cause such a huge perfomance gaps ??

Thanks ,

Vishal.