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Tip of the Day
Language: Java
Expertise: Beginner
May 11, 2004

WEBINAR:

On-Demand

Application Security Testing: An Integral Part of DevOps


Avoid SQL Exceptions when Executing the Same Query Multiple Times

When you execute the same SQL query over a hundred times, you probably get exceptions similar to this one:

java.sql.SQLException: ORA-00604: error occurred at recursive 
SQL level 1 ORA-01000: maximum open cursors exceeded
The following code shows one reason you may be getting this exception. As you can see, the same PreparedStatement/Statement is being used after each SQL query execution, and the statement is never closed:

PreparedStatement pstmt = null
...
for (long i=0; i<600000 i++){
 pstmt = connection.prepareStatement(...);
 pstmt.executeUpdate();
}
In order to avoid this, make the following modifications to the code:

PreparedStatement pstmt = null
...
for (long i=0; i<600000; i++){
 pstmt = connection.prepareStatement(...);
 pstmt.executeUpdate();
 pstmt.close();
}
Ravi Naraharasetty
 
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