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Re: ORA-07445, "SIGSEGV", & "address"???

From: cichomitiko gmail <cichomitiko_at_gmail.com>
Date: Fri, 20 May 2005 13:34:00 +0200
Message-ID: <02aa01c55d2f$d26e0980$1a03310a@IBME1D11967173>


man siginfo:

     SIGSEGV        SEGV_MAPERR          address not mapped to object
                    SEGV_ACCERR          invalid permissions  for  mapped
                                         object



     SIGBUS         BUS_ADRALN           invalid address alignment
                    BUS_ADRERR           non-existent physical address




HTH
Dimitre

> Chris,
>
> This usually means that some piece of code committed a bounds violation,
> trying to read from or write to memory which it did not own.
>
> HTH,
>
> Peter Schauss
>
> -----Original Message-----
> From: oracle-l-bounce_at_freelists.org
> [mailto:oracle-l-bounce_at_freelists.org] On Behalf Of Marquez, Chris
> Sent: Thursday, May 19, 2005 11:39 AM
> To: oracle-l_at_freelists.org
> Subject: ORA-07445, "SIGSEGV", & "address"???
>
> 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/instance...could not pull of the RAC reconfiguration...a whole
> other issue.
> One crash leads to another crash/hang :o|)
>
> I would like to get comments on the true meaning of "SIGBUS", "SIGSEGV",
> "...physical address", "...Address not mapped".
>
> I have always believed these to be Oracle/OS memory related issues?
>
>
> Thanks in advance,
>
> Chris Marquez
> Oracle DBA
>
>
> Errors in file /o01/app/oracle/admin/orcl/bdump/orcl2_j001_22478.trc:
> ORA-07445: exception encountered: core dump [kcbgtcr()+10562] [SIGBUS]
> [Non-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: exception encountered: core dump [kghalf()+924] [SIGSEGV]
> [Address not mapped to object] [0x4001281] [] []
> Thu May 19 02:00:13 2005
>
> --
> http://www.freelists.org/webpage/oracle-l
> --
> http://www.freelists.org/webpage/oracle-l

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Received on Fri May 20 2005 - 07:38:41 CDT

Original text of this message

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