[LON-CAPA-admin] Course Map Undefined Error

[Young, Joyce E]

Stuart,

                When I'm in the course as a student and scrolling through the problems using the green arrows, I don't see a "Courses" link at the top right. My screen appears as shown below.

                Would the "Courses" link appear if I actually had the "Course Map  Undefined" error? I've not seen the error, just had it reported to me.

                                                                                Thanks,

                                                                                                Joyce



[cid:image001.png at 01D10726.37CC69B0]



-----Original Message-----
From: lon-capa-admin-bounces at mail.lon-capa.org [mailto:lon-capa-admin-bounces at mail.lon-capa.org] On Behalf Of Stuart Raeburn
Sent: Wednesday, October 14, 2015 6:15 PM
To: lon-capa-admin at mail.lon-capa.org
Subject: Re: [LON-CAPA-admin] Course Map Undefined Error



Hi,



> The error message: 'Coursemap undefined' will be shown when a student

> attempts to display the Course Contents screen, when either or both of

> the following items:

>

> map_start_/uploaded/purdue/<coursenum>/default.sequence

> map_end_/uploaded/purdue/<coursenum>/default.sequence



A correction ...



The second item should be:

map_finish_/uploaded/purdue/<coursenum>/default.sequence



>> "Course Map  Undefined" error. They seem to have to log out and

>> login to get back  to the problem.



Clicking the "Courses" link at top right, and then pushing the "Re-select" button for the particular course should enable access once again to the particular problem, i.e., without logout and re-login.



Stuart Raeburn

LON-CAPA Academic Consortium





> Hi Joyce,

>

> The error message: 'Coursemap undefined' will be shown when a student

> attempts to display the Course Contents screen, when either or both of

> the following items:

>

> map_start_/uploaded/purdue/<coursenum>/default.sequence

> map_end_/uploaded/purdue/<coursenum>/default.sequence

>

> are absent from the user's course session hash, found in the GDBM file:

>

> /home/httpd/perl/tmp/<username>_<courseid>.db

>

> where <courseid> is the LON-CAPA course ID, e.g.,

> purdue_22608011029874510purduel1

>

> On the command line you can use the script:

> /home/httpd/perl/debug/dump_db.pl to view the contents of a GDBM file in LON-CAPA.

>

> The perl module which performs the page flip in response to a student

> pressing either the forward or backward green arrow is:

> /home/httpd/lib/perl/Apache/lonpageflip.pm.

>

>> It appears that when scrolling through  problems using the Green

>> Arrow, the problem takes a long time to  load.

>

> Is the issue always with the same problem?  What resource is it?  Is

> there discussion attached to the instance of the problem in the course?

>

> If you are able to reproduce this error, what are the timestamps for

> the GDBM files:

>

> /home/httpd/perl/tmp/<username>_<courseid>.db

> /home/httpd/perl/tmp/<username>_<courseid>_parms.db

>

> for your user session when this occurs?  Were they recently created,

> for example because the course contents were updated by a Course

> Coordinator within the past 20 minutes?

>

>

> Stuart Raeburn

> LON-CAPA Academic Consortium

>

> Quoting "Young, Joyce E" <young257 at purdue.edu<mailto:young257 at purdue.edu>>:

>

>> We are having issues in one of our courses with students receiving

>> a  "Course Map Undefined" error. It appears that when scrolling

>> through  problems using the Green Arrow, the problem takes a long

>> time to  load. The students then go to Course Contents to try to

>> access the  problem in a different fashion, and then they get the

>> "Course Map  Undefined" error. They seem to have to log out and

>> login to get back  to the problem.

>> If they refresh the page instead of clicking on Contents, it gives

>>  them "End of Sequence". Since they are not done, they still have

>> to   click on Contents, which gives them the "Course Map Undefined"

>>  error.

>> Please advise.

>>

>> Thanks,

>>

>>             Joyce Young

>>

>> Joyce Young

>> Programmer/Analyst

>> ITAS - Student Systems Competency Center Purdue University

>> 3495 Kent Avenue, Suite 100

>> West Lafayette, IN 47906

>> Phone: (765) 427-6340

>> Fax: (765) 464-2233

>> Campus Mail: ROSS

>> young257 at purdue.edu<mailto:young257 at purdue.edu<mailto:young257 at purdue.edu%3cmailto:young257 at purdue.edu>>

>

> _______________________________________________

> LON-CAPA-admin mailing list

> LON-CAPA-admin at mail.lon-capa.org<mailto:LON-CAPA-admin at mail.lon-capa.org>

> http://mail.lon-capa.org/mailman/listinfo/lon-capa-admin



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