Dear All  

My self having 2 GB RAM in my machine and am running a JDBC Connection Config 
Test Plan ( Oracle Database ) with 250 Concurrent users . 

I have set the Max number of Connection as 500 in JDBC Connection Configuration 
. 

The Query used in JDBC Request ( Query Type = ' Select Statement ' ) has an 
output of approx some 15-20 columns and more than 200 rows from database . 

While running the test plan , I am getting the following errors in View Results 
in Tree 

i. Response Code : null 17002 
   Respose Message : java.sql.SQLException : IO exception : End of TNS Data 
Channel . 

an I have got an Error message in Command Prompt as 

ii. " Exception in thread "AWT-EventQueue-0" java.lang.OutOfMemoryError: Java 
heap space
       Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
        at java.awt.Component$BltBufferStrategy.revalidate(Unknown Source)  "  

more over my Machine got hanged after some time . I have set my heap size as 

set NEW=-XX:NewSize=1024m -XX:MaxNewSize=1024m

Can anyone please give me a suggetion to overcome this error ??

Thanking You 
With warm regards,
Vijayakumar.C

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