Problem opening 2 result sets

Question

Hi we are having problems with leaking database connections. We are using the jdbc debug features of oc4j (9.0.2).
Basically we connect to database 1, do a query and open a result set, then create a connection to database 2 and try to execute a query on it. The problem is that if the first's resultset is open, the debugging complains that there are multiple open result sets. This is leading to database connections not getting release when they should be.
Here's an example of the code we are using (which is in a stateless session bean):
public void test(){
try {
Connection connection;
DataSource dataSource;
Context context = new InitialContext();
dataSource = (DataSource) context.lookup(Constants.NHHDC_DATABASE);
connection = dataSource.getConnection();
PreparedStatement statement = null;
ResultSet resultSet = null;
statement = connection.prepareStatement(" SELECT 'X' FROM DUAL");
resultSet = statement.executeQuery();
resultSet.next();
DataSource reamsDataSource;
Context reamsContext = new InitialContext();
reamsDataSource = (DataSource) reamsContext.lookup(Constants.REAMS_DATABASE);
Connection reamsConnection = reamsDataSource.getConnection();
PreparedStatement reamsStatement = null;
ResultSet reamsResultSet = null;
reamsStatement = reamsConnection.prepareStatement("SELECT 'X' FROM DUAL");
System.out.println("LAST STATEMENT");
reamsResultSet = reamsStatement.executeQuery();
System.out.println("FINISHED");
reamsResultSet.close();
reamsStatement.close();
reamsConnection.close();
resultSet.close();
statement.close();
connection.close();
} catch (NamingException e) {
System.out.println("naming error " + e.getMessage());
} catch (SQLException e) {
System.out.println("sql error " + e.getMessage());
The error coming from the debug is:
*********** OPEN SETS: ************
java.lang.Exception: com.evermind.sql.DebugPreparedResultSet@5e9f1
Is it not possible to have 1 resultset open on one database and a separate one on a different database? I know the example above could be written to close the result set first, but this is a simplified example of something we are doing just to hightlight the problem.
Any ideas appricated on why this complains.
Thanks
Andrew Moore

Answer 1

hi Andrew,
Just a hint: we are using more than 1 database connections at the same time. but in this case all datasources have to be non-emulated.
check this, maybe its the prob @ yours.
4 non-emulated datasources check the server guide of oc4j ..
http://technet.oracle.com/tech/java/oc4j/doc_library/902/servicesjun02/ds3.htm#1005742
cu
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