Gather Schema Statistics Hangs & Returns ORA-600: Internal Error, Arguments: 
Last updated on JULY 28, 2016
Applies to:Oracle EBS Applications Performance - Version 18.104.22.168 to 22.214.171.124 [Release 11.5.10]
Information in this document applies to any platform.
Gathering Schema Statistics on a schema that contains external tables causes the request to hang and the following errors to be returned in the alert log file:
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