Segmentation Fault


 
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# 1  
Old 05-29-2008
Segmentation Fault

Hi,

While comparing primary key data of two tables thr bteq script I am getting this Error. This script is a shell script.

*** Error: The following error was encountered on the output file.
Script.sh[485]: 3043492 Segmentation fault(coredump)


Please let me know how to get through it.


Monika
# 2  
Old 05-29-2008
The [485] is the line number of the shell script, where the problem is occuring. I guess it's calling some binary program that might have an error trying to allocate or write into memory, but that is a different thing.

Last edited by zaxxon; 05-29-2008 at 03:29 AM..
# 3  
Old 05-29-2008
Quote:
Originally Posted by zaxxon
The [485] is the line number of the shell script, where the problem is occuring. It's calling some program that tries to allocate memory or write into memory and there seems something is getting wrong.


Actually at line 485 its simply reading the name of table entered by user and nothing else.
This error occurs whenever I include the code to match Primary key data.
If I remove this code it works fine.

Please let me know how to get thr this
# 4  
Old 05-29-2008
You wrote your own answer -> check you matching code for those keys. Maybe put a "set -x" in front of the the line where the error occurs and check what it does. Or echo your variable names to see what's stored in them.
I can't try to fix it, because I have no access to your code since you did not post it, nor am I sure if I could Smilie So the next logical thing would be to fix that code or ask someone who can fix it.

GL
# 5  
Old 05-30-2008
Quote:
Originally Posted by zaxxon
You wrote your own answer -> check you matching code for those keys. Maybe put a "set -x" in front of the the line where the error occurs and check what it does. Or echo your variable names to see what's stored in them.
I can't try to fix it, because I have no access to your code since you did not post it, nor am I sure if I could Smilie So the next logical thing would be to fix that code or ask someone who can fix it.

GL

Hi,

Thanks for the Reply.
I am getting the same Error.Table name is correct.

Code on line no. 485 is:

table1_entry()
{
new_table=''
while [ -z "$new_table" ]
do
echo " "
echo "Enter name of table 1:"
read new_table
echo "t2::$new_table"
done

}


If I remove this functionality then I am getting correct ans without any Errors.But if I am comparing data for Primary key then I am getting that Error. there is additional code in this function to match other columns which r not primary key.It works fine for them.
key_query()
{

bteq<<-EOD
.logon $PASSWORD;

.set width 64000
.export report file=$path/match1.msq
.titledashes off

((select $pk_key
from $new_database.$new_table
minus
select $pk_key
from $base_database.$base_table) UNION
(select $pk_key
from $base_database.$base_table
minus
select $pk_key
from $new_database.$new_table));

.export reset

}
# 6  
Old 05-30-2008
In the function "table1_entry()":
Quote:
new_table=''
Looks like it is missing another " or some other value inside "". But I guess that's not the reason for a segmentation fault - the script should just hang and wait for a complete value.
Interessting might be the calling of that function "table1_entry()" too. If the function is causing of this little typo up there unusable data, the binary that is processing it, might produce the segm. fault.

Fix that new_table=" and let's see if it works.
 
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