# 15 – Evaluate tuning options for the operating system, database, and SAP application
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 **How do you understand and weigh the effects of different tuning options on your SAP system performance?** The great variance in performance recommendations for different combinations of SAP software offerings, supported operating systems and databases, and versions prohibit an exhaustive list of recommendations for performance excellence in a single document. With that in mind, the following guidance should be applicable to the majority of SAP use cases, and we will call out specific focus areas where applicable. 


| ID | Priority | Best Practice | 
| --- | --- | --- | 
| ☐ BP 15.1 | Required | Follow operating system guidelines for SAP performance | 
| ☐ BP 15.2 | Highly Recommended | Modify database parameters to align with hardware selection | 
| ☐ BP 15.3 | Highly Recommended | Modify SAP parameters to align with hardware selection | 
| ☐ BP 15.4 | Recommended | Consider performance tuning for recovery and availability options |