05-22-2009
Core dump generation in sun OS
Hi, im getting a core dump file in my sun OS version 5.9 while using a complex c++ program. The same program is working without any core error in another system with same sun OS and same version. The program has used structs, LL's and lots of call by references. What may be the reason. will it be a problem with the OS ?
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
help, what is the difference between core dump and panic dump? (1 Reply)
Discussion started by: aileen
1 Replies
2. UNIX for Dummies Questions & Answers
does any one have read a core dump?
is there any reader for that? or may i know what is the use of that core which takes sometimes memory in GBs?
:) (6 Replies)
Discussion started by: sskb
6 Replies
3. UNIX for Advanced & Expert Users
Hi All,
i am new to this forum.i want detail of reading the core file and trace the problem because of what the program get crashed.please help me.if any body knows any website or tutoril plese let me know.
sudhir (6 Replies)
Discussion started by: sudhir patnaik
6 Replies
4. UNIX for Advanced & Expert Users
Hello all,
Iam new to unix while executing java program which finely working in windows know iam testing with unix ,but in unix while executing iam getting core dump, my application is in client server environment and it is menu drivrn application on clicking options no problem but after some time... (1 Reply)
Discussion started by: vinp
1 Replies
5. AIX
My application gives core dump. When i am debugging with dbx getting instructions below:
pthdb_session.c, 818: 695445 PTHDB_INTERNAL (internal error)
pthreaded.c, 1941: PTHDB_INTERNAL (internal error)
Illegal instruction (illegal opcode) in . at 0x0
warning: Unable to access address 0x0... (1 Reply)
Discussion started by: bapi
1 Replies
6. Programming
Hi, I am running a c++ program in unix sun OS 5.9. There are two functions in a file which are being used by a third function in the same file. the two functions being used are of the same type. one function is returning a success and the control is redeemed by the calling function. for teh second... (2 Replies)
Discussion started by: suresh_kb211
2 Replies
7. Programming
Hi, I am running a c++ program in unix sun OS 5.9. There are two functions in a file which are being used by a third function in the same file. the two functions being used are of the same type. one function is returning a success and the control is redeemed by the calling function. for teh second... (5 Replies)
Discussion started by: suresh_kb211
5 Replies
8. Programming
Posting again, as previous query had a typo.
=======================================================
Hi, I am running a c++ program in unix AIX machine. There are two functions in a file which are being used by a third function in the same file. the two functions being used are of the same type.... (1 Reply)
Discussion started by: suresh_kb211
1 Replies
9. AIX
Hi, im getting a core dump file in a AIX machine while using a complex c++ program. The same program is working without any core error in another system with sun OS 5.9. The program has used structs, LL's and lots of call by references. What may be the reason. will it be a problem with the OS ? (3 Replies)
Discussion started by: suresh_kb211
3 Replies
10. UNIX for Dummies Questions & Answers
Hi
I am using Linux and I am using Java as well as C++ services running on it.
The ulimit -c is set to around 400Mb.
Whenever any of the service fails they produce a core file.(Actual size of core could be greater than 400Mb).
Whenever my Java service fails I get a core file of size 400Mb... (3 Replies)
Discussion started by: Raj999
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 Also
dd(1), uerf(8)
savecore(8)