UTL_MAIL produces an ORA-00600: internal error code, arguments: [psdnopGetACL-4],  error
Last updated on JULY 17, 2017
Applies to:PL/SQL - Version 18.104.22.168 and later
Information in this document applies to any platform.
***Checked for relevance on 17th Jul 2017***
Attempting to execute the UTL_MAIL package results in the following error stack.
ORA-00600: internal error code, arguments: [psdnopGetACL-4], ,
[ORA-06509: PL/SQL: ICD vector missing for this package ORA-06512: at line 1], , , , , , , , , 
ORA-06512: at "SYS.UTL_MAIL", line 654
ORA-06512: at "SYS.UTL_MAIL", line 671
ORA-06512: at line 2
The UTL_MAIL works from other schemas but only fails from this one particular schema.
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