MacLochlainns Weblog » verify external file for external table http://blog.mclaughlinsoftware.com Michael McLaughlin's Technical Blog Mon, 06 Sep 2010 21:21:48 +0000 en hourly 1 http://wordpress.org/?v=3.0.1 How to avoid errors when querying external tables http://blog.mclaughlinsoftware.com/2008/09/28/how-to-avoid-errors-when-querying-external-tables/ http://blog.mclaughlinsoftware.com/2008/09/28/how-to-avoid-errors-when-querying-external-tables/#comments Sun, 28 Sep 2008 23:21:44 +0000 maclochlainn http://maclochlainn.wordpress.com/?p=495 Somebody got to my blog searching for how to find an external file. I thought about why they might be looking for that. Since the lack of a file raises an error stack, I concluded that they want to verify whether the file exists before querying it. That way, they avoid the annoying ORA-29913, ORA-29400, and KUP-04040 error stack.

I’ve added a page to describe the complete set of steps … The instructions let you avoid the error stack by verifying the existence of the file first.

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