Oracle EBusiness Suite sizing

Here is some public information for sizing of Oracle EBusiness Suite.

The Oracle E-Business Suite 12.1 requires at least 2GB of 3GB would be better and 4GB even better: http://gerardnico.com/wiki/ebs/installation

The installation recommended the minimum of 6 GB memory for Ebusiness Suite 12.1.3 according to Oracle documention: http://docs.oracle.com/cd/B53825_08/current/acrobat/121upgrade.pdf.  For the upgrade test used in this example, a machine for the middle tier/application had 4 CPUs.    The database tier upgrade example in this document used a 24 CPU machine.

Here is some other sizing information that can help
1.  https://blogs.oracle.com/stevenChan/entry/ebs_sizing_primer   
2. http://www.oracle.com/us/solutions/benchmark/apps-benchmark/index.html - all results http://www.oracle.com/us/solutions/benchmark/apps-benchmark/results-166922.html

        Go directly to report results for this benchmark : http://www.oracle.com/us/solutions/benchmark/apps-benchmark/hp-dl585-2100-16-core-166452.pdf

Database Tier:
Hewlett-Packard® ProLiant® DL585 G5 server equipped with 4 x 2.7 GHz Quad-Core AMD® Opteron™ 8384 processors.

128 GB of memory
Applications Tier:
3 x Hewlett- Packard® BL685c server blades. Each server equipped with 4 x 3.0 GHz Dual-Core AMD® Opteron® 8222 processors.

32 GB of memory

Online: 2,100 Users
Batch: 50,000 Order Lines
10,000 Payroll Employees

Be aware that Oracle E-Business Fusion Applications require a minimum of 128 GB of memory. http://onlineappsdba.com/index.php/2011/11/02/fusion-applications-128-gb-memory-and-500-gb-disk-space-are-you-ready/