ORA-7445[PC:0x0] [SIGILL] [ADDR:0x0] [PC:0x0] [Illegal opcode] 
(Doc ID 1922373.1)
Last updated on MARCH 04, 2019
Applies to:Oracle Database - Enterprise Edition - Version 18.104.22.168 to 22.214.171.124 [Release 11.1]
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Express Cloud Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Information in this document applies to any platform.
In a RAC (real application cluster) environment, the following error occurs in the alert log:
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