Conversations we had with Oracle while discussing going to blades, they (sales reps and tech reps) told us that it only counts actual CPU's for licensing..... However, you could probably get someone else from Oracle on the hook and they'd tell you it counts the hyperthreaded CPU's -----Original Message----- From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Hemant K Chitale Sent: Wednesday, December 08, 2004 10:33 AM To: oracle-l@xxxxxxxxxxxxx Subject: Intel-Hyperthread-Linux-Oracle How does Oracle on Linux treat Intel CPUs with HyperThreading ? Also, does the software license have to be for twice the number of CPUs . I believe that, on a 4-CPU machine, Oracle actually sets CPU_COUNT to 8 on HT architecture. Hemant K Chitale http://web.singnet.com.sg/~hkchital -- //www.freelists.org/webpage/oracle-l -- //www.freelists.org/webpage/oracle-l