ORA 7445 - [FFFFFFFF7E5DE234]

Question

[i]ORA-07445: exception encountered: core dump ORA-07445: exception encountered: core dump [FFFFFFFF7E5DE234] [SIGSEGV] [Address not mapped to object] [0x123FA07000000] [] [][SIGSEGV] [Address not mapped to object] [0x123FA07000000] [] []

Answer 1

A little background about ORA-7445 much like Ora-600 Error
It's generic error most likely caused by a Bug.
If you can't obtain support from Oracle try to upgrade your Oracle version.
What is an ORA-7445 error?
An ORA-7445 error is raised by an Oracle server process when it has received a fatal signal from the operating system. The error may be raised in either a foreground or background process. The process will normally
write an error to the alert log
write a trace file in either user_dump_dest or background_dump_dest
create a core dump in core_dump_dest
There are many 'illegal' operations that the operating system can trap; a common example is a process writing to an invalid memory location. To protect the system, the offending process will be sent a fatal signal.
Typically, the signals seen are SIGBUS (signal 10, bus error) and SIGSEGV (signal 11, segmentation violation).
There are other UNIX signal and exception that may happen; However, they are likely cause by OS program than a Oracle problem.
Example of other signals are : SIGINT, SIGKILL, SIGSYS. A complete list is available at (Note 1038055.6
An ORA-7445 is a generic error, and can occur from anywhere in the Oracle code. The precise location of the error is identified by the trace file it produces.