1. A machine-implemented method, comprising: acquiring predefined parameter types for comparing multiple query execution plans against one another, each query execution plan including a number of parameters associated with the parameter types, each parameter identified and acquired for comparison from each query execution plan and each query execution plan developed by a different database optimizer; assigning predefined weights to each of the parameters that are identified within each of the query execution plans, the weights assigned based on the parameter type for each parameter; computing a total score for each of the query execution plans in response to the weights associated with each query execution plan to select a particular query execution plan for a particular database optimizer.