Moodle in English: Can not find data record in database table context

If you run cron once, it should sort out the mess.

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Hi,

I have run cron as you suggested but it has not made any difference. Any other thoughts?

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Oh sorry, the key bit of cron only runs about 20% of the time.

I shoudl ahve said: "Run cron about 5 or 10 time, until you see a message like "Running clean-up tasks..." near the top of the ouptut

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Hi Mate,

I have run cron over 10 times now and still got the same issue. Any ideas?

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I really thought that would fix it.

If you want to investigate further, you will probably need to investigate in the DB. For example try queries like

SELECT * FROM mdl_course c WHERE NOT EXISTS (SELECT 1 FROM mdl_context ctx ON ctx.instanceid = c.id AND ctx.contextlevel = 50)

That will find any courses where the course context does not exist (so it should return 0 rows).

You can also do similar queries for modules and blocks

SELECT * FROM mdl_course_modules cm WHERE NOT EXISTS (SELECT 1 FROM mdl_context ctx WHERE ctx.instanceid = cm.id AND ctx.contextlevel = 70)

SELECT * FROM mdl_block_instances bi WHERE NOT EXISTS (SELECT 1 FROM mdl_context ctx WHERE ctx.instanceid = bi.id AND ctx.contextlevel = 80)

If all those quries return no rows, then I am really confused by the error you are seeing.

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Hi Tim,

I have installed phpmyadmin to run the commands.

When I try the first one you listed I get the following error:

#1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'ON ctx.instanceid = c.id AND ctx.contextlevel = 50) LIMIT 0, 30' at line 1

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Sorry, that was a copy-and-paste error.

SELECT * FROM mdl_course c WHERE NOT EXISTS (SELECT 1 FROM mdl_context ctx WHERE ctx.instanceid = c.id AND ctx.contextlevel = 50)

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No worries.

Using the new line it says: MySQL returned an empty result set (i.e. zero rows). ( Query took 0.0022 sec )

If I change the end of the statement to AND ctx.contextlevel = 100 it then shays: Showing rows 0 - 29 ( 91 total, Query took 0.0010 sec)

Not really sure what that means though!

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I have changed contextlevel to 70 assuming that's the level within courses and get a number of rows returned. How do I re link them?

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Zero rows is correct, and what I would expect. What about the other queries above, relating to modules and blocks?

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All 3 of the queries you provided return 0 rows mate.

But if I actually look in the context table - assuming I am looking in the right place; I can't see the missing courses.

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Any more thoughts?

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Not really. I suppose you could try setting Debugging to DEVELOPER level, to see if that gives a more informative error message. If it does, copy and paste the whole thing here.

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Here is an output from one of the broken links when developer level debugging is enabled:

Can not find data record in database table context.

Debug info: SELECT * FROM {context} WHERE id = ? [array ( 0 => '571', )]

Stack trace:

line 1272 of /lib/dml/moodle_database.php: dml_missing_record_exception thrown
line 1249 of /lib/dml/moodle_database.php: call to moodle_database->get_record_select()
line 4811 of /lib/accesslib.php: call to moodle_database->get_record()
line 5053 of /lib/accesslib.php: call to context::instance_by_id()
line 1522 of /lib/questionlib.php: call to context->get_parent_contexts()
line 1436 of /lib/questionlib.php: call to question_edit_contexts->__construct()
line 3277 of /lib/navigationlib.php: call to question_extend_settings_navigation()
line 2909 of /lib/navigationlib.php: call to settings_navigation->load_course_settings()
line 601 of /lib/pagelib.php: call to settings_navigation->initialise()
line 617 of /lib/pagelib.php: call to moodle_page->magic_get_settingsnav()
line 133 of /blocks/settings/block_settings.php: call to moodle_page->__get()
line 280 of /blocks/moodleblock.class.php: call to block_settings->get_content()
line 232 of /blocks/moodleblock.class.php: call to block_base->formatted_contents()
line 926 of /lib/blocklib.php: call to block_base->get_content_for_output()
line 978 of /lib/blocklib.php: call to block_manager->create_block_contents()
line 349 of /lib/blocklib.php: call to block_manager->ensure_content_created()
line 6 of /theme/binarius/layout/general.php: call to block_manager->region_has_content()
line 685 of /lib/outputrenderers.php: call to include()
line 637 of /lib/outputrenderers.php: call to core_renderer->render_page_layout()
line 211 of /course/view.php: call to core_renderer->header()

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Ah, I see. The problem is in get_parent_contexts, which means that the problem is with the path for one of your contexts. (I wish I had thougth to start by asking for the full debug output! Sorry.)

So, can we do a query to locate that particular problem?

OK, try this

SELECT *
FROM mdl_context ctx
LEFT JOIN mdl_context parent ON ctx.path LIKE CONCAT('%/', parent.id, '/', ctx.id)
WHERE parent.id IS NULL OR ctx.path <> CONCAT(parent.path, '/', ctx.id)

If everything is OK, that query will return one row with contextlevel = 10, but in your case it should return more.

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This is the output:

Showing rows 0 - 7 ( 8 total, Query took 6.4536 sec)

id	contextlevel	instanceid	path	depth	id	contextlevel	instanceid	path	depth
1	10	0	/1	1	NULL	NULL	NULL	NULL	NULL
44	50	5	/1/491/3496/492/493/570/44	7	NULL	NULL	NULL	NULL	NULL
215	50	8	/1/491/3496/492/493/571/215	7	NULL	NULL	NULL	NULL	NULL
392	50	10	/1/491/3496/492/493/570/392	7	NULL	NULL	NULL	NULL	NULL
961	50	16	/1/491/3496/492/493/570/961	7	NULL	NULL	NULL	NULL	NULL
1474	50	21	/1/491/3496/492/493/570/1474	7	NULL	NULL	NULL	NULL	NULL
1590	50	26	/1/491/3496/492/493/570/1590	7	NULL	NULL	NULL	NULL	NULL
1775	50	34	/1/491/3496/492/493/570/1775	7	NULL	NULL	NULL	NULL	NULL

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I assume that output is what you expected. Is there a fix for it?

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Right, so the problem is those paths. The bits of teh path are context ids, so can you check whether contexts 491, 3496, 492, 493, 570 and 571 exist? Actually, just do

SELECT * FROM mdl_context WHERE id IN (491, 3496, 492, 493, 570, 571)

and then we should have enough information to get this fixed.

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Here is the output:

Showing rows 0 - 2 ( 3 total, Query took 0.0006 sec)

				id	contextlevel	instanceid	path	depth
Edit	Inline Edit	Copy	Delete	491	40	2	/1/491	2
Edit	Inline Edit	Copy	Delete	492	40	3	/1/491/3496/492	4
Edit	Inline Edit	Copy	Delete	3496	40	21	/1/491/3496	3

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OK, so you are missing contexts 493, 570, 571 which should correspond to the categories that the problem courses are in. Or perhaps the categories got deleted somehow, but the courses are still there.

I think the easiest way to fix this up is to use a simple script to move these courses into a category that we know is OK.

If you are wise, you will take a backup of everything before going any further.

Save the following script into a file called fixup.php using a plaing text editor.

Upload it to the root folder of your Moodle site (the same folder that contains files colled config.php and pluginfile.php) then visit the URL .../fixup.php with your web browser. Hopefully it will work, but I have to say this is just my best guess. It might be a good idea to set Debugging to developer level before running the script.

The alternative is to read the code, and work out exactly what the move_courses function does, and do the same thing manually in the database. That is more complex, but might be a bit safer.

<?php
require_once('config.php');
require_once($CFG->dirroot . '/course/lib.php');
require_login();
require_capability('moodle/site:config', get_context_instance(CONTEXT_SYSTEM));
move_courses(array(5, 8, 10, 16, 21, 26, 34), 3);
echo 'Done!';

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Hi Tim,

That seems to have worked a treat!

The courses now appear when clicked on. Can't see any adverse effects at the moment but will check through all the courses to be sure.

Thanks very much for your help - I reall appreciate it!

Could I call upon you one more time?

I have a new problem that came up earlier today HERE. Any thoughts on this one?

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Actually don't worry about the other problem - managed to sort it!

Thanks very much again for all your help!

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Thanks Tim / Thanks Richard,

I got the same issue and its been resolved now by following all the steps. But one critical issue, I can see all the courses, but courses are empty, I have lost all the course data (forums, resources, activities etc.)

Any suggestion on that Moodle data directory contains the data but Moodle is not showing that.

Please suggest what to do.

Thanks,

Jaswant

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Just by guessing without looking at the error,

perhaps the issue might be: (I'm just guessing)

1. in your config.php file, make sure its

$CFG->wwwroot ='http://moodlewebsite.org';

pointing to the right url and folder,

OR

$CFG->dataroot ='/home2/jpaccart/public_html/moodledata';

make sure its pointing to the right database, If the courses are empty than its pointing to a different database, the moodle system is retrieving empty database....

which you might check this two lines...

$CFG->dbname ='xxxxxxx';

$CFG->dbuser ='xxxxxxx';

Sometimes the prefix also has changed,

$CFG->prefix ='mdl_'

check this also,

Sorry if this might not solve your problem, than I'm pretty sure it has to do with the Moodle system communication with the Database....may be others could help.....

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I experienced this exact same error today. The way I fixed it was to move the problematic course out of the category it was in, using the Moodle interface, and into a different category. I then moved it back into the original category and the course displayed correctly. This action must have forced Moodle to create the missing context entries in the DB.

I'm pretty sure this error was caused by deleting some sub-categories.

Hope this helps other with the same issue.

Marty

P.S. Thanks to all who contributed to this thread, it allowed me to diagnose the problem very quickly.

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we are experiencing a similar error but in the course_modules :

Can not find data record in database table course_modules.

Debug info: SELECT id,course FROM {course_modules} WHERE id = ? [array ( 0 => '39683', )]

Error code: invalidrecord Stack trace:

line 1357 of /lib/dml/moodle_database.php: dml_missing_record_exception thrown
line 1333 of /lib/dml/moodle_database.php: call to moodle_database->get_record_select()
line 6799 of /lib/accesslib.php: call to moodle_database->get_record()
line 1029 of /lib/modinfolib.php: call to context_module::instance()
line 310 of /lib/modinfolib.php: call to cm_info->__construct()
line 1341 of /lib/modinfolib.php: call to course_modinfo->__construct()
line 1000 of /lib/completionlib.php: call to get_fast_modinfo()
line 47 of /report/progress/lib.php: call to completion_info->get_activities()
line 2459 of /lib/navigationlib.php: call to report_progress_extend_navigation_course()
line 1133 of /lib/navigationlib.php: call to global_navigation->add_course_essentials()
line 2920 of /lib/navigationlib.php: call to global_navigation->initialise()
line 766 of /lib/pagelib.php: call to navbar->has_items()
line 4 of /theme/canvas/layout/general.php: call to moodle_page->has_navbar()
line 804 of /lib/outputrenderers.php: call to include()
line 734 of /lib/outputrenderers.php: call to core_renderer->render_page_layout()
line 230 of /course/view.php: call to core_renderer->header()

we have run the cron script several times but has not fixed the error, also tried moving the course to another category

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fixed it with

update mdl_course set modinfo='' where id = 10024;

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I'm getting a similar error when I want to load a SCORM.

Debug info: SELECT * FROM {course} WHERE id = ?
[array (
0 => 41812,
)]

Stack trace:

line 1272 of \lib\dml\moodle_database.php: dml_missing_record_exception thrown
line 1249 of \lib\dml\moodle_database.php: call to moodle_database->get_record_select()
line 66 of \file.php: call to moodle_database->get_record()

Only happens in one course, other courses are ok.

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Hi, i have this problem for course table:

'Can not find data record in database table course.'

none of this answers have effect on result.

please help me!

thanks in advanced.

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Hello,

I am having the exact same problem when upgrading from Moodle 2.3 to either 2.4 or 2.5. There are two courses that I can no longer access, though the do appear to be in the database.

I tried the SQL query Tim suggested and only had the one row returned with contextlevel = 10 so it isn't the same issue, just similar. Can someone please help me find the proper SQL query I need to find the error?

Here is the stack trace for one of the courses:

Can not find data record in database table course.

Debug info: SELECT id,category FROM {course} WHERE id = ?
[array (
0 => '4',
)]
Error code: invalidrecord

Stack trace:

line 1372 of /lib/dml/moodle_database.php: dml_missing_record_exception thrown
line 1348 of /lib/dml/moodle_database.php: call to moodle_database->get_record_select()
line 6576 of /lib/accesslib.php: call to moodle_database->get_record()
line 124 of /blocks/course_list/block_course_list.php: call to context_course::instance()
line 51 of /blocks/course_list/block_course_list.php: call to block_course_list->get_remote_courses()
line 764 of /blocks/moodleblock.class.php: call to block_course_list->get_content()
line 238 of /blocks/moodleblock.class.php: call to block_list->formatted_contents()
line 951 of /lib/blocklib.php: call to block_base->get_content_for_output()
line 1003 of /lib/blocklib.php: call to block_manager->create_block_contents()
line 353 of /lib/blocklib.php: call to block_manager->ensure_content_created()
line 6 of /theme/ascend_tablet/layout/general.php: call to block_manager->region_has_content()
line 847 of /lib/outputrenderers.php: call to include()
line 777 of /lib/outputrenderers.php: call to core_renderer->render_page_layout()
line 240 of /course/view.php: call to core_renderer->header()

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Hi, I have the same problem with Moodle 2.5 - Dataform. When I try to add and element to the Dataform module, I got "Can not find data record in database table course_modules." It then redirects me to this page.

Any help with this error for our Moodle 2.5 admin ?

Best, Miro

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Me to, here is the debug form Moodle 2.5+ (Build: 20130627)

Strict Standards: Creating default object from empty value in /var/www/moodle/report/log/index.php on line 107
Coding problem - missing course modinfo property in get_fast_modinfo() call

    line 1384 of /lib/modinfolib.php: call to debugging()
    line 1803 of /lib/navigationlib.php: call to get_fast_modinfo()
    line 1870 of /lib/navigationlib.php: call to global_navigation->generate_sections_and_activities()
    line 420 of /course/format/lib.php: call to global_navigation->load_generic_course_sections()
    line 1782 of /lib/navigationlib.php: call to format_base->extend_course_navigation()
    line 1093 of /lib/navigationlib.php: call to global_navigation->load_course_sections()
    line 3178 of /lib/navigationlib.php: call to global_navigation->initialise()
    line 717 of /lib/pagelib.php: call to settings_navigation->__construct()
    line 734 of /lib/pagelib.php: call to moodle_page->magic_get_settingsnav()
    line 6348 of /lib/adminlib.php: call to moodle_page->__get()
    line 150 of /report/log/index.php: call to admin_externalpage_setup()

Coding problem - missing course sectioncache property in get_fast_modinfo() call

    line 1388 of /lib/modinfolib.php: call to debugging()
    line 1803 of /lib/navigationlib.php: call to get_fast_modinfo()
    line 1870 of /lib/navigationlib.php: call to global_navigation->generate_sections_and_activities()
    line 420 of /course/format/lib.php: call to global_navigation->load_generic_course_sections()
    line 1782 of /lib/navigationlib.php: call to format_base->extend_course_navigation()
    line 1093 of /lib/navigationlib.php: call to global_navigation->load_course_sections()
    line 3178 of /lib/navigationlib.php: call to global_navigation->initialise()
    line 717 of /lib/pagelib.php: call to settings_navigation->__construct()
    line 734 of /lib/pagelib.php: call to moodle_page->magic_get_settingsnav()
    line 6348 of /lib/adminlib.php: call to moodle_page->__get()
    line 150 of /report/log/index.php: call to admin_externalpage_setup()

Notice: Undefined property: stdClass::$format in /var/www/moodle/course/format/lib.php on line 171
Format plugin format_ is not found. Using default format_topics

    line 118 of /course/format/lib.php: call to debugging()
    line 179 of /course/format/lib.php: call to format_base::get_format_or_default()
    line 35 of /course/format/lib.php: call to format_base::instance()
    line 1807 of /lib/navigationlib.php: call to course_get_format()
    line 1870 of /lib/navigationlib.php: call to global_navigation->generate_sections_and_activities()
    line 420 of /course/format/lib.php: call to global_navigation->load_generic_course_sections()
    line 1782 of /lib/navigationlib.php: call to format_base->extend_course_navigation()
    line 1093 of /lib/navigationlib.php: call to global_navigation->load_course_sections()
    line 3178 of /lib/navigationlib.php: call to global_navigation->initialise()
    line 717 of /lib/pagelib.php: call to settings_navigation->__construct()
    line 734 of /lib/pagelib.php: call to moodle_page->magic_get_settingsnav()
    line 6348 of /lib/adminlib.php: call to moodle_page->__get()
    line 150 of /report/log/index.php: call to admin_externalpage_setup()

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I have tried Tims fix and done multipal manual runs on cron.php

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