markdown/datamgmt/load/g-disabling-execute-for-web-or-writable-external-tables.html.md.erb

---
title: Disabling EXECUTE for Web or Writable External Tables
---

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There is a security risk associated with allowing external tables to execute OS commands or scripts. To disable the use of `EXECUTE` in web and writable external table definitions, set the `gp_external_enable_exec server` configuration parameter to off in your master `hawq-site.xml` file:

``` pre
gp_external_enable_exec = off
```