Incorrect key file for table '/tmp/#sql_767b_0.MYI'; try to repair it

When i go into shop admin and the to Customers > Orders, I'm getting this error:

126 Incorrect key file for table '/tmp/#sql_767b_0.MYI'; try to repair it
in:
[select o.orders_id, o.customers_id, o.customers_name, o.payment_method, o.shipping_method, o.date_purchased, o.last_modified, o.currency, o.currency_value, s.orders_status_name, ot.text as order_total, o.customers_company, o.customers_email_address, o.customers_street_address, o.delivery_company, o.delivery_name, o.delivery_street_address, o.billing_company, o.billing_name, o.billing_street_address, o.payment_module_code, o.shipping_module_code, o.ip_address from zen_orders o left join zen_orders_total ot on (o.orders_id = ot.orders_id), zen_orders_status s where o.orders_status = s.orders_status_id and s.language_id = '1' and ot.class = 'ot_total' order by o.orders_id DESC limit 0, 20]

I'm assuming that this particular script is creating a temp table so I have no way to go in and repair it. This table has 52,000 records in it so could that be the problem?

You might want to backup your database then try a repair on the orders and orders_total and orders_status tables ...

unfortunately that didn't do the trick. I've repaired all tables beginning with "order" as well as the customers table. Same error.

Any other thoughts?

hollygds:

unfortunately that didn't do the trick. I've repaired all tables beginning with "order" as well as the customers table. Same error.

Any other thoughts?

The tables affected by that query on your server are:

• zen_orders
• zen_orders_total
• zen_orders_status

I would suggest these approaches:

• ensure that the /tmp folder and drive have no quota/space restrictions, and that your mysql process has sufficient rights to create its temporary files there without limitations (talk to your hosting company)
• repair those tables
• drop and rebuild all the indexes on those tables
• worst case, backup what you have now and restore from a working copy