Matlab database explorer: Error using cursor/fetch (line 363) Java exception occurred: java.lang.OutOfMemoryError: Java heap space - matlab

Question

I used the database explorer package to generate the following code.
function r = physicians()
%Set preferences with setdbprefs.
setdbprefs('DataReturnFormat', 'cellarray');
setdbprefs('NullNumberRead', 'NaN');
setdbprefs('NullStringRead', 'null');
%Make connection to database. Note that the password has been omitted.
%Using JDBC driver.
conn = database('censored', 'censored', '', 'Vendor', 'ORACLE', 'Server', 'cesnored', 'PortNumber', censored, 'DriverType', 'thin');
%Read data from database.
curs = exec(conn, ['SELECT RECIPIENT.RECIPIENT_ID'...
' , RECIPIENT.FNAME'...
' , RECIPIENT.LNAME'...
' , RECIPIENT.LANGUAGE'...
' , RECIPIENT.PHONE'...
' , RECIPIENT.FAX'...
' , RECIPIENT.CITY'...
' , RECIPIENT.POSTAL_CODE'...
' FROM "STI".RECIPIENT ']);
curs = fetch(curs);
close(curs);
%Assign data to output variable
r = curs.Data;
%Close database connection.
close(conn);
%Clear variables
clear curs conn
I get the following error:
Error using cursor/fetch (line 363)
Java exception occurred:
java.lang.OutOfMemoryError: Java heap space
at java.util.Arrays.copyOf(Unknown Source)
at java.util.Vector.grow(Unknown Source)
at java.util.Vector.ensureCapacityHelper(Unknown Source)
at java.util.Vector.addElement(Unknown Source)
at com.mathworks.toolbox.database.fetchTheData.dataFetch(fetchTheData.java:763)
Error in physicians (line 24)
curs = fetch(curs);
However, when I just import directly using the tool, I don't get an error like this. I'm guessing I need to limit the amount of RAM being used, but I don't really know how.