ORA-07445 [lnm_logger_set_level] When Backup with a 3rd Party Media Manager
(Doc ID 1991463.1)
Last updated on AUGUST 04, 2018
Applies to:Oracle Database - Enterprise Edition - Version 126.96.36.199 and later
Information in this document applies to any platform.
You are performing backup with a 3rd party Media Manager, which fails with
ORA-07445: exception encountered: core dump [lnm_logger_set_level()+172] [SIGSEGV] [ADDR:0x8] [PC:0xFFFFFFFF790A7980] [Address not mapped to object] 
The process state section in the incident trace file written by the error shows:
Current Wait Stack:
0: waiting for 'Backup: MML command to channel'
The Call Stack may include the function 'sbtcommand()'
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