Tuning parameter hot list

• IBM WAS supported hardware, software, and APIs
• Install the most current refresh pack, fix pack, and the recommended interim fixes
• Check hardware configuration and settings
• Tune the operating systems
• IBM i v7.2 Power Systems Performance Capabilities Reference
• IBM i Web Performance Advisor
• Set the minimum and maximum JVM heap sizes
• Use a type 4 (or pure Java) JDBC driver
• Tune WAS JDBC data sources and associated connection pools
• Enable the pass by reference option
• Ensure that the transaction log is assigned to a fast disk
• Tune related components, for example, database
• Disable functions that are not required
• Review the application design
• CDI behavior changes
• Tune the application serving environment
• Connection pooling
• Task overview: Using the dynamic cache service to improve performance
• Use application clients
• Tune TCP/IP buffer sizes
• IBM Systems Workload Estimator