ORA-07445 [PLCURCLOSE()+24] at Session Cleanup
(Doc ID 1422764.1)
Last updated on AUGUST 04, 2018
Applies to:Oracle Database - Enterprise Edition - Version 220.127.116.11.0 and later
Information in this document applies to any platform.
ORA-07445: exception encountered: core dump [plcurClose()+24] [SIGBUS] [ADDR:0xDF] [PC:0x108C070F8] [Invalid address alignment] 
From the trace, it can be identified if the process was deleted and that the error was reported at cleanup by seeing the DEL flag:
flags: (0x8000041) USR/- flags_idl: (0x21) BSY/-/-/DEL/-/-
Review of the generated tracefiles reveals a call stack similar to:
plcurClose <- kgscReleaseACursor <- kgscReleaseCursorGroup <- kgiscl <- ksuxds <- ksudel <- kkjsexe <- kkjrdp
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