ORA-07445, "SIGSEGV ", & "address "??? 2005-05-20 - By Chris Gait
By all means open a TAR, because core dumps are often from bugs in the
Oracle code and there is next to nothing available to diagnose them
outside Oracle's firewall. But don't neglect the other category of
core dumps: Hardware.
Make sure your SA(s) run some memory diagnostics on the system.
Regards,
Chris Gait
On 5/19/05, Marquez, Chris <cmarquez@(protected)> wrote:
> All,
> I am about to open a TAR...painfully.
> Had a database (server?) crash a 2AM.
> Further sadness, the node/instance that crashed hung the other RAC node/i=
nstance...could not pull of the RAC reconfiguration...a whole other issue.
> One crash leads to another crash/hang :o|)
>=20
> I would like to get comments on the true meaning of "SIGBUS", "SIGSEGV", =
"...physical address", "...Address not mapped".
>=20
> I have always believed these to be Oracle/OS memory related issues?
>=20
>=20
> Thanks in advance,
>=20
> Chris Marquez
> Oracle DBA
>=20
>=20
> Errors in file /o01/app/oracle/admin/orcl/bdump/orcl2_j001_22478.trc:
> ORA-07445 (See ORA-07445.ora-code.com): exception encountered: core dump [kcbgtcr()+10562] [SIGBUS] [N=
on-existent physical address] [0x2C0AC00E] [] []
> Thu May 19 02:00:08 2005
> Errors in file /o01/app/oracle/admin/orcl/bdump/orcl2_diag_541.trc:
> ORA-07445 (See ORA-07445.ora-code.com): exception encountered: core dump [kghalf()+924] [SIGSEGV] [Add=
ress not mapped to object] [0x4001281] [] []
> Thu May 19 02:00:13 2005
>=20
> --
> http://www.freelists.org/webpage/oracle-l
>=20
--=20
Regards,
Chris Gait
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