field_deleted_date_N and field_deleted_revision_N not removed on cron run or field_purge_batch() I am running a site on D7. I noticed a no. of field_deleted_data_N and field_deleted_revision_N tables in my database. Through a lot of googling I found people saying that these tables will eventually be cleared on cron run. They also said you could run field_purge_batch().

However neither of there suggestions worked. Could somebody please help me solve this problem? Why are these fields never removed? Is there something wrong with my database? How can I remove them in a drupallish manner?

Thanks.
If drush doesn't help and running cron doesn't help, that might mean that the field data can't be purged because the module providing the field type has been disabled and / or uninstalled. 
In that case just drop the tables manually.