I am trying to read the one billion records of data from database uings sample java code like

Connection conn = DriverManager.getConnection(url,username,password);
Statement stmt = conn.createStatement();
String query = “select * from table_name”;
ResultSet rs = stmt.executeQuery(query);
ArrayList arl = new ArrayList();
while(rs.next())
{
arl.add(rs.getString(1));
}
rs.close();
stmt.close();
conn.close();

when i execute that code it showing heep memory full exception and out of memory error.

Any one can suggest me what is the correct way to read all the data and put it into collection object

thanks& regards
hari krishna G

SSOTESTING {
com.sun.security.auth.module.Krb5LoginModule required
useKeyTab=false
storeKey=true
useTicketCache=false
principal=”testsso@JAVA.SUN.COM”;
};

java.lang.Exception: javax.security.auth.login.LoginException: No LoginModules configured for SSOTESTING
org.apache.jsp.autoSignin_jsp.authenticate(autoSignin_jsp.java:66)
org.apache.jsp.autoSignin_jsp._jspService(autoSignin_jsp.java:325)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:374)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:337)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:71)
org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:75)
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
net.sf.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:292)
net.sf.acegisecurity.intercept.web.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:84)
net.sf.acegisecurity.intercept.web.SecurityEnforcementFilter.doFilter(SecurityEnforcementFilter.java:182)
net.sf.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:303)
net.sf.acegisecurity.wrapper.ContextHolderAwareRequestFilter.doFilter(ContextHolderAwareRequestFilter.java:50)
net.sf.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:303)
net.sf.acegisecurity.securechannel.ChannelProcessingFilter.doFilter(ChannelProcessingFilter.java:168)
net.sf.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:303)
net.sf.acegisecurity.context.HttpSessionContextIntegrationFilter.doFilter(HttpSessionContextIntegrationFilter.java:226)
net.sf.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:303)
net.sf.acegisecurity.util.FilterChainProxy.doFilter(FilterChainProxy.java:173)
net.sf.acegisecurity.util.FilterToBeanProxy.doFilter(FilterToBeanProxy.java:125)
com.nihilent.hrms.webapp.filter.UrlValidationFilter.doFilter(UrlValidationFilter.java:211)

Investigation Status Summary 3/14 \Investigated SPNEGO, got hellospnego.jsp working following the samples for both JBOSS and Tomcat last week \Tried to integrate “SPNEGO HTTP Servlet Filter” into Seam, Authenticator…….

Will following code have any advantage than using Statement?

pstmt = conn.prepareStatement(updatesql);
pstmt.clearParameters();
ps.setString(1, value);
…
int rel = pstmt.executeUpdate();
pstmt.close();

I am facing one issue with trinidad inputHidden tag. I need to pass updated value to other functionality on click of a command button(partial trigger present on this button). So I have added one partial trigger on input hidden. But its not working. So I have added inputText with style hidden. Its working fine. But Later i have to have so many inputHidden. So i cannot have all the inputText with style hidden. It’ll slow the rendering of page. So please guide me what would be the alternate option for having inputText with style hidden.

How to have updated bean values in JSF on click of partial trigger button.

Thanks,
DOM

Not sure if i am doing something wrong. Any help would be appreciated.

http://asktom.oracle.com/pls/asktom/f?p=100:11:0::::P11_QUESTION_ID:1993620575194

Madison

I have put the jar file into lib folder and tried to compile the prindpdf.java file and it throws the error as follows:
PrintPdf.java:15: package com.sun.pdfview does not exist
import com.sun.pdfview.PDFFile;
^
PrintPdf.java:16: package com.sun.pdfview does not exist
import com.sun.pdfview.PDFPage;
^
PrintPdf.java:17: package com.sun.pdfview does not exist
import com.sun.pdfview.PDFRenderer;
^
PrintPdf.java:102: cannot find symbol
symbol : class PDFFile
location: class PDFPrintPage
private PDFFile file;
^
PrintPdf.java:104: cannot find symbol
symbol : class PDFFile
location: class PDFPrintPage
PDFPrintPage(PDFFile file) {
^
PrintPdf.java:74: cannot find symbol
symbol : class PDFFile
location: class PrintPdf
PDFFile pdfFile = new PDFFile(bb);
^
PrintPdf.java:74: cannot find symbol
symbol : class PDFFile
location: class PrintPdf
PDFFile pdfFile = new PDFFile(bb);
^
PrintPdf.java:112: cannot find symbol
symbol : class PDFPage
location: class PDFPrintPage
PDFPage page = file.getPage(pagenum);
^
PrintPdf.java:118: cannot find symbol
symbol : class PDFRenderer
location: class PDFPrintPage
PDFRenderer pgs = new PDFRenderer(page, g2, imageArea, n
ull, null);
^
PrintPdf.java:118: cannot find symbol
symbol : class PDFRenderer
location: class PDFPrintPage
PDFRenderer pgs = new PDFRenderer(page, g2, imageArea, n
ull, null);
^
10 errors

Please suggest me to resolve this.

Thanks in Advance.

Which is better, using preapred staement or statement?
In our coe, we have baseDAO which has prepared staement and that has been called @ 100 places and Statement/Connection are not closed anaywhere. We just clsoe the resultsets. Recently we ran into perforamnce issue and guessing this could be the reason. Please advise.