Skip to content
ProjectControls.com
Oracle Primavera - PM6

Mandatory Finish - Longest Path ?!?!?!

In the Open Standard
C. Andre McMillanMember for 14 years 8 months
Created
7
2
0

hi.

i have tried to do the following:

creating a Finish Milestone (called FINISH) with a Mandatory Finish with its only Predecessor another Milestone (PROJECTED FINISH). the idea is that the FINISH activity would never fluctuate while the PROJECTED FINISH would show the project Float.

the problem is that it will NOT show the Longest Path except when the project falls behind.

is there a setting or something that could make it work?

thank you.

Save Follow Follow forum Report
Reply New topic

7 replies

Oldest first
  1. 0
    Gary Whitehead ·
    #1

    Delete the milestone with the

    Delete the milestone with the mandy constraint, and use a project-level constraint instead.

    -Enterprise>Projects.

    View>Show on bottom>Project Details

    Select your project, go to "Dates" tab in project details

    Enter your "Must finish by" date

    Open your project, F9 it, and filter on longest path.

     

     

    My advise is to never use mandatory constraints on activities. It always screws something up.

    Report
  2. 0
    C. Andre McMillan ·
    #2

    yes, constraints are evil,

    yes, constraints are evil, but i live in a world where they have to be there.

    i understand how to work around it, but i am perplexed that it shows the Longest Path only when the project is behind schedule. just doesn't make sense. Oracle won't help without more money in addition to the cost of the program.

    thank you for responding, i appreciate it.

    Report
  3. 0
    Gary Whitehead ·
    #3

    Longest path is all the

    Longest path is all the activities that are driving the latest activity of the project.

     

    When you have a finish milestone constrained to finish later than the rest of the project, none of the other activites are driving the last activity in the project, hence they don't appear on the longest path filter.

     

    If the project is running late, obviously the longest path now runs through those late activities so they appear on the filter. But until that point, you longest path is just your constrained milestone.

    Report
  4. 0
    Mike Testro ·
    #4

    Hi C Andre There is no world

    Hi C Andre

    There is no world where constraints have to be there except to define things that are outside the contractors control such as Last Date for Free Issue Material - Power Supply On etc.

    Even then a Milestone linked to the affected task and set ALAP will do the same job.

    Take all your constraints off and plan your project properly.

    Best regards

    Mike Testro

    Report
  5. 0
    Rafael Davila ·
    #5

    I agree withg Gary, mandatory

    I agree withg Gary, mandatory constraints tend to screw things. Even if not tied they might have some unexpected impact on computations such as resource leveling. on vacation from Mystic Seaport Connecticut best regards Rafael
    Report
  6. 0
    C. Andre McMillan ·
    #6

    "Longest path is all the

    "Longest path is all the activities that are driving the latest activity of the project.

    When you have a finish milestone constrained to finish later than the rest of the project, none of the other activites are driving the last activity in the project, hence they don't appear on the longest path filter.

    If the project is running late, obviously the longest path now runs through those late activities so they appear on the filter. But until that point, you longest path is just your constrained milestone."

     

    that makes complete sense. thank you very much Gary.

    Report
  7. 0
    C. Andre McMillan ·
    #7

    Mike - "There is no world

    Mike - "There is no world where constraints have to be there except to define things that are outside the contractors control such as Last Date for Free Issue Material - Power Supply On etc.

    Even then a Milestone linked to the affected task and set ALAP will do the same job.

    Take all your constraints off and plan your project properly."

     

    Mike,

    in ALL my projects, we have an NTP Constraint and a Contract Completion Date Constraint and the Contractor is forced to schedule around those dates. which i know screws things up, but that's how it is.

    CAM

    Report

Log in or join to reply

ProjectControls.com is free to join. Members can post questions, reply, vote and follow discussions.

Log inJoin free

Existing members: your original username and password still work. Forgot password?