you are right mr c.s.ong. this i have seen only in pirated software of primavera. not with original one. you did not tell is it original one or pirated one?
What type of activity have changing the PCT? Task or others. Just consider the time only, PCT will not change after scheduling (except hammock). If PCT is subject to cost and resouce also, the case is far more complicated.
Member for
22 years 3 months
Member for22 years4 months
Submitted by Jorge Taguinod on Tue, 2003-10-07 04:34
As I recall in my P3 Basic (601) class, there was this rule about Open Ends in which Primavera strongly advises that there should only be one activity with no predecessor and one with no successor.
This means that all activities with no predecessor should be connected to a dummy activity (start milestone - project start); likewise, all activities with no successor should be connected to a dummy activity (finish milestone - project finish).
I have stuck to this rule and have not experienced your problem. Although I am not sure if this will fix your problem, you may want to try it and inform us of the results.
I have recently noticed this effect of changing dates and percentages when I used an extensive number of Expected Finish constraints on a large schedule. I had to press the F9 key twice to make all of the constraints ‘take’ before removing then or the dates would change upon recalculation after the dates were removed.
I theorize that the ‘backward’ calculation of remaining duration to meet a certain date is partially the function of previous progress in out-of-sequence activities and retained logic calculation mode. In other words, although an activity has been actually started, if predecessors with remaining duration still exist, the activity in question must delay the resumption of progress until such predecessors are first complete.
This logic ‘pushes’ the start of the remaining duration of the activity started out of sequence. If you add an Expected Finish constraint to this delayed-resumption activity, P3 calculates both ‘ends’ of the activity and they interfere. It appears that pressing the F9 key the first time gets the solution ‘half-right’ and the second calculation finishes the job.
I may be wrong about the theory, but I am sure of the cause and result.
Member for
23 years 6 months
Member for23 years6 months
Submitted by Vincent Tham on Tue, 2002-10-22 08:32
But due to your case, i also encounter it before but finally i solve it. If i not wrong and it may due to your activity linkings and scheduling options problems.
I dont understand what is wrong in your schedule. Every time you press F9, P3 will re-calculate all Data such as Percent Complete base on latest update inputs. Note that for calculation of summarization Percent Complete, P3 will use the weighting factor which is set in: Tools/Options/Summarization
In this option you can set the weighting factor by Duration, Resource Unit and Cost. Each time you press F9 the P3 will follow what is set in this option. By defult P3 will calculate the summarization data baseed on Duration.
The resulte of calculated overall percent complete will change if you change the weighting factor. So, it seams that your problem caused by this probebly.
Member for
16 years 9 monthsRE: F9 Problem - One Possible Cause
>you are right mr c.s.ong. this i have seen only in pirated
>software of primavera. not with original one. you did not
>tell is it original one or pirated one?
I am using the original version 3.0 but it was an upgrade from V2.0.
Best regards,
csong
Member for
16 years 9 monthsRE: F9 Problem - One Possible Cause
you are right mr c.s.ong. this i have seen only in pirated software of primavera. not with original one. you did not tell is it original one or pirated one?
Member for
23 years 8 monthsRE: F9 Problem - One Possible Cause
What type of activity have changing the PCT? Task or others. Just consider the time only, PCT will not change after scheduling (except hammock). If PCT is subject to cost and resouce also, the case is far more complicated.
Member for
22 years 3 monthsRE: F9 Problem - One Possible Cause
Hi CS Ong,
As I recall in my P3 Basic (601) class, there was this rule about Open Ends in which Primavera strongly advises that there should only be one activity with no predecessor and one with no successor.
This means that all activities with no predecessor should be connected to a dummy activity (start milestone - project start); likewise, all activities with no successor should be connected to a dummy activity (finish milestone - project finish).
I have stuck to this rule and have not experienced your problem. Although I am not sure if this will fix your problem, you may want to try it and inform us of the results.
Good luck.
Best regards,
Jorge
Member for
16 years 9 monthsF9 Problem - One Possible Cause
I have recently noticed this effect of changing dates and percentages when I used an extensive number of Expected Finish constraints on a large schedule. I had to press the F9 key twice to make all of the constraints ‘take’ before removing then or the dates would change upon recalculation after the dates were removed.
I theorize that the ‘backward’ calculation of remaining duration to meet a certain date is partially the function of previous progress in out-of-sequence activities and retained logic calculation mode. In other words, although an activity has been actually started, if predecessors with remaining duration still exist, the activity in question must delay the resumption of progress until such predecessors are first complete.
This logic ‘pushes’ the start of the remaining duration of the activity started out of sequence. If you add an Expected Finish constraint to this delayed-resumption activity, P3 calculates both ‘ends’ of the activity and they interfere. It appears that pressing the F9 key the first time gets the solution ‘half-right’ and the second calculation finishes the job.
I may be wrong about the theory, but I am sure of the cause and result.
Member for
23 years 6 monthsRE: RE: RE: RE: F9 Problem
I agree that what Ali Vessalis comments.
But due to your case, i also encounter it before but finally i solve it. If i not wrong and it may due to your activity linkings and scheduling options problems.
Can you send me a your project file.my e-mail is sducomp@hotmail.com
Member for
24 years 5 monthsRE: RE: RE: F9 Problem
CSong,
I do sometimes also encounter such problem, what I do as a habit, I schedule it 2 times or three times to make sure that the results are consistent.
Se
Member for
24 years 1 monthRE: RE: F9 Problem
CS Ong,
I dont understand what is wrong in your schedule. Every time you press F9, P3 will re-calculate all Data such as Percent Complete base on latest update inputs. Note that for calculation of summarization Percent Complete, P3 will use the weighting factor which is set in: Tools/Options/Summarization
In this option you can set the weighting factor by Duration, Resource Unit and Cost. Each time you press F9 the P3 will follow what is set in this option. By defult P3 will calculate the summarization data baseed on Duration.
The resulte of calculated overall percent complete will change if you change the weighting factor. So, it seams that your problem caused by this probebly.
If you need more info. send an E-mail to me (avessali@yahoo.com)
Bye,
Member for
16 years 9 monthsRE: F9 Problem
Hi there,
This one is a new one on us. We have mailed this out to the P3 "expert" group.
We will have to wait to see if anyone has a solution.
Regards.
The Planning Planet team.