Rational Developer for System z
Enterprise COBOL for z/OS, Version 4.1, Compiler and Runtime Migration Guide


Determining conversion priority

After you have determined the complexity rating for each program in your inventory, you can make informed decisions about the programs that you want to upgrade, and the order in which you want to upgrade them.

Table 1 shows one method of relating program complexity ratings to conversion priorities. (The highest priority is “1” and the lowest priority is “6”.)

Table 1. Assigning program conversion priorities
Conversion priority Complexity rating Other considerations
1 0 to 3

Great importance to your organization
Low conversion effort using conversion tools

2 4 to 6

Great importance to your organization
Medium conversion effort using conversion tools

0 to 3

Medium importance to your organization
Low conversion effort using conversion tools

3 7 to 8

Great importance to your organization
High conversion effort using conversion tools

3 to 6

Medium importance to your organization
Medium conversion effort using conversion tools

0 to 3

Small importance to your organization
Low conversion effort using conversion tools

4 9 to 10

Great importance to your organization
Very high conversion effort

7 to 8

Medium importance to your organization
High conversion effort using conversion tools

3 to 6

Small importance to your organization
Medium conversion effort using conversion tools

5 9 to 10

Medium importance to your organization
Very high conversion effort

7 to 8

Small importance to your organization
High conversion effort using conversion tools

6 9 to 10

Small importance to your organization
Very high conversion effort

Consider the following when deciding on conversion priorities:

After you determine the priority of each program that you need to upgrade and the effort required to upgrade those programs, you can decide the order in which you want to convert your applications and programs.


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