Unexpected "Unknown command" error message after upgrade to MySQL 5.5 (Doc ID 1345334.1)

Last updated on DECEMBER 28, 2016

Applies to:

MySQL Server - Version 5.5 and later
Information in this document applies to any platform.

Symptoms

MySQL command line tools start showing unexpected "Unknown command" error message while loading binary data.

Changes

Problem happens after upgrade to MySQL 5.5

Cause

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