Java Database Connectivity (JDBC)

Hello,

I'm having a problem with the executeBatch() command. It seems that whenever I used it, my program just hangs up. What this program do is that it first read a text file and place it in an Array(txtArr[size]). Then it would also read the Database and place the contenent of the table in an array(tblArr[size]) as well. Each Array has at least 100,000 records. After this, the program would enter a loop to read txtArr[i] and check if it matches the tblArr. If the record from the textfile and the database matches, it would update the table using a preparedStatement.addBatch() command. After the said loop, it is then that the int[] cnt = preparedStatement.executeBatch() command is called. and that is when the Hanging part begins. Can you help me?

Thanks.