Which activity may cause the ORA-07445: exception encountered: core dump [0046A7A2][SIGSEGV] [unknown code] [0x4A49] [] [] error while working with an Oracle database instance?

Which activity may cause the ORA-07445: exception encountered: core dump
[0046A7A2][SIGSEGV] [unknown code] [0x4A49] [] [] error while working with an Oracle database
instance?

Which activity may cause the ORA-07445: exception encountered: core dump
[0046A7A2][SIGSEGV] [unknown code] [0x4A49] [] [] error while working with an Oracle database
instance?

A.
Unexpired extents have been overwritten in the undo segment.

B.
Any activity involving a process that writes to an invalid memory location.

C.
Both the DB_WRITER_PROCESSES and DBWR_IO_SLAVES parameters are set to more
than one simultaneously.

D.
The LGWR background process is not able to write into the redo log file because archival of
log files is not complete.



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