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14 Sizing and Best Practices for Online Transaction Processing Applications with Oracle 11g R2 using Dell PS Series | BP1003
4.2 Test criteria
The test criteria used for the study includes:
 The storage array disk access latencies (read and write) remain below 20 ms per volume.
 Database server CPU utilization remains below an 80% average.
 TCP retransmits on the storage network remain below 0.5%.
 Application response times remain below two seconds, which is the industry-standard acceptable
latency for Oracle OLTP database applications.
 No RAC related bottlenecks (such as database locking, user and system I/O wait, RAC interconnect
response, or others) while executing the peak I/O load.