Net.Data Administration and Programming Guide for OS/400

Improving Performance

Use the following tips to improve the performance of your Net.Data application:

• Limit the number of REXX programs called by combining REXX programs. Having fewer, larger programs provides better performance than more smaller programs because the REXX interpreter always runs in a new activation group. The interpreter must be activated every time Net.Data invokes the interpreter to run a REXX program.

• Store the REXX program in an external file instead of including the REXX program inline in the Net.Data macro.

• Pass input-only parameters directly to a REXX program by defining global Net.Data variables and referencing the variables. For inline REXX programs, reference the global variables directly in your REXX source.