Hi All, I am having an IBM xSeries 346 Server and i have installed RedHat ES 3.0(32-bit OS). I am planning to install Oracle 10G Release 2. The hardware has 8Gb RAM and Intel Xeon Processor. According to my Database administrator, he says that if the OS is not 64-bit then the database cannot use the complete 8GB RAM. But from my previous experience, we were having oracle 10g and we were running on RedHat ES 3.0 (32-bit) and it was working fine. Can you guys advice me on this... Should i upgrade to 64-bit OS so that Oracle uses 8GB RAM ?? Thanks in advance,