The core file has program version info as well.
will verify you are looking at the correct core file.
And. No way should an app 'be expected' to dump core in production. If someone has deliberately written code that forces itself to core dump for debug reasons, okay. But that's development. Never production.
i create one executed file (based on c language). when 1 try to
executed the file, the result show me the bus error (coredump).
can you help me to solve this problem. thanks. (2 Replies)
I am trying to set up coredumps on a server, I have enabled the coreadm, and have also set a path to whre the coredumps will go.
I now need to set the ulimit , as this is set to 0. I made the change:
ulimit -c 8192
but when I logged out and back in, it was set back to 0 again. I need to know... (1 Reply)
SunOS unknown 5.9 Generic_118558-10 sun4u sparc SUNW,Sun-Fire-880
I'm trying to set up mirroring and am running into a problem:
As you can see, I set up the metadb, but am getting a coredump when running metainit. I saw this through google, but don't know the validity of it. Any ideas?
#... (5 Replies)
Every time I reboot our solaris 9 (SunOS 5.9 Generic_118558-19 sun4u sparc SUNW,Sun-Fire-480R) box,
I get the messages below:
# dmesg | grep dump
Mar 24 12:39:55 hostname savecore: initial dump header corrupt
Mar 24 12:39:55 hostname genunix: dump on /dev/dsk/c1t0d0s1 size 700 MB
Mar 24... (2 Replies)
Hi All,
I just wondering how can we read core files (core.****). I have an appication, when it is trying to crash I got the coredump. since it is in binary format, I dont know how to read that. Thanks (1 Reply)
Hi all,
I am quite weak in C but I need to get some work done. Hope someone can help me out. I keep getting this error when i try to run my C application in my HP-UX 10.20 machine.
Some code snippet:
Month(DBTime) =====This is a function which will return variable "CutOffTime" to be use... (5 Replies)
Hello!
I do have an IBM pSeries 7043 server running AIX 5.2.0.0. Well, I do have trouble to run xsnaadmin tool remotely, I mean, the xsnaadmin tool can't run on exported X display.
What I'm doing is
aixserver>export DISPLAY=xxx.xxx.xxx.xxx:0.0
aixserver>xsnaadmin
Segmentation... (0 Replies)
Hi Gurus,
I tried bc 1000 % 10 on tcsh and ksh and its throwing a core dump on a sun solaris machine.
uname -a
SunOS azote 5.9 Generic_118558-39 sun4u sparc SUNW,Ultra-4
Please let me know if you find anything.
Thanks,
Kinny (8 Replies)
Hi,
I'm looking for the help on how to implement coredump using the tools that comes with HP-UX 11.23 and HP-UX 11.31.
To also avoid the the dump files fill-up the root disk when dump occurs.
I'm new to this and would need step by step please.
Thanks in advance! (3 Replies)
Discussion started by: lamoul
3 Replies
LEARN ABOUT ULTRIX
savecore
savecore(8) System Manager's Manual savecore(8)Name
savecore - save a core dump of the operating system
Syntax
/etc/savecore [ options ] dirname [ system ] [ corename ]
Description
The command is meant to be called near the end of the file. The command saves the core dump of the system (assuming one was made) and
writes a reboot message in the shutdown log.
The command checks the core dump to be certain it corresponds with the current running ULTRIX. If it does, it saves the core image in the
file dirname/vmcore.n and saves the namelist in the file dirname/vmunix.n. The trailing .n in the pathnames is replaced by a number which
increments each time is run in that directory.
After saving the core and namelist images, will save the error logger buffer into a predetermined file. The error logger buffer contains
information about why the crash occurred. After completes, the daemon will extract the error logger file and translate its contents into a
form familiar to the program.
Before writes out a core image, it reads a number from the file dirname/minfree. If there are fewer free blocks on the filesystem that
contains dirname than the number obtained from the file, a core dump is not done. If the file does not exist, savecore always writes out
the core file (assuming that a core dump was taken).
The command also writes a reboot message in the shut down log. If the system crashed as a result of a panic, also records the panic string
in the shut down log.
For partial crash dumps, creates a sparse core image file in dirname/vmcore.n. If this sparse core image file is copied or moved to
another location, the file expands to its true size which can take too much file system space. Hence, to copy or move sparse core image
files, you must use the command. The command has a conversion option to create sparse output files.
Options-c Clears the core dump. This option is useful when the core dump is corrupted in a way that will not allow to save it safely. Use the
option with caution, because once it clears the core dump, the core dump cannot be retrieved.
-d dumpdev dumplo
Specifies the dump device and the dump offset when running on a system image other than the currently running system image. The pro-
gram assumes that the running system image is and it reads the dump device and dump device offset are different in the system image
that crashed, the option provides the correct dump device and dump device offset.
-e Saves only the error logger buffer into a file. If used, core or namelist images are not saved.
-f corename
Takes the i corefile name as the file from which to extract the the crash dump data instead of the default dump device. This option
is used only for diskless workstations.
If the core dump was from a system other than /vmunix, the name of that system must be supplied as system. The program assumes that the
running image is
After successful completion, the core dump is cleared. Also, a message is written in the file which tells whether the dump succeeded or
failed.
Files
Shut down log
Current running ULTRIX system
See Alsodd(1), uerf(8)savecore(8)