- The amount of data you are trying to fetch is very large.
- The system does not register the 'logintimeout()' since it is after the call to 'database()'.
Fetch function in database toolbox freezes MATLAB
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I'm running MATLAB 2014b with Database Toolbox. I'm trying to fetch data from a database. It runs satisfactory for a while until the Fetch function suddenly freezes the whole session. Exactly the same behaviour can turn up when I run compiled .exe file of the script! What can be the reason for this behaviour?
conn = database('Remus2', '...', '...');
logintimeout(3);
logintimeout('sun.jdbc.odbc.JdbcOdbcResultSet', 3);
logintimeout('com.mathworks.toolbox.database.sqlExec', 3);
logintimeout('sun.jdbc.odbc.JdbcOdbcStatement', 3);
logintimeout('com.mathworks.toolbox.database.fetchTheData', 10);
curs_svarsfil_svar1 = exec(conn, [...
'SELECT svarsfil, svarsfil_ext, utlat_nr, svarsfil_status, case_id '...
'FROM svarsfil '...
'WHERE case_id=' ch_case_id_string ' AND svarsfil_status=utlat_nr '...
'ORDER BY 1;'...
]);
disp('Connect OK!')
try
disp('Trying to fetch...')
curs_svarsfil_svar2 = fetch(curs_svarsfil_svar1);
imFilDat = curs_svarsfil_svar2.Data;
catch
imFilDat = [];
end
close(curs_svarsfil_svar1);
close(curs_svarsfil_svar2);
close(conn);
1 个评论
Dhruvesh Patel
2016-12-28
Hi Nasser,
I understand that your MATLAB freezes while executing the script attached to the question.
There could be several reasons for the behavior that you are observing like:
It would be helpful in finding the exact issue for the observed behavior if you share the details about the database, the driver, server machine details and the client machine details.
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