When I am trying to run cron.php I get the following error:

SQLSTATE[42S22]: Column not found: 1054 Unknown column 'host' in 'where clause', query was: SELECT main_table.* FROM cron_schedule AS main_table WHERE (status = 'running') AND (host = 'web02.myhost.ro')

The message is correct, there is no 'host' column in the 'cron_schedule' but why is it looking for it and where is this set up? Or what else can I do to get cron running.

I am using Magento

  • a magento developer was able to take a look at our system and found the issue was within a 3rd party magento plugin that had a corrupt row in the database table that was causing the Mage__Helper_Data error. Jul 2, 2015 at 9:01

1 Answer 1


The popular cronjob management extension Aoe_Scheduler adds this column, either you installed it but it didn't get set up correctly or other code assumes that it has been installed.

Either way, I recommend to (re-)install the extension, it's a must have for every shop to monitor your cronjob activity and also improves cronjob reliability.

  • how do i reinstall I had just copied all the files through FTP. Shall i overwrite those file with the ones you have linked in your answer? Sep 18, 2017 at 7:44
  • 1
    @WasiqShahrukh Yes, then make sure the upgrade scripts are executed (i.e. clear config cache and refresh page OR use n98-magerun with the sys:setup:run command). If there's still not host column, you might have to delete the aoe_scheduler_setup row in the core_resource database table and try again. Sep 18, 2017 at 7:51

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