Result Set is getting close in 12 Min

Question

Hi,
I am facing one issue here with the JDBC.
I am doing a query to the oracle db , where I have more the 80K records in our one of table. Once I recieved the data in resultset. I am iterating them in batch of length 1024 from the result set. But I am able to do only 5 Iteration and result set getting connection closed SQLException in 12 Min. Here is the stack trace.
Caused by: java.sql.SQLException: Closed Connection: next
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:112)
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:146)
at oracle.jdbc.driver.OracleResultSetImpl.next(OracleResultSetImpl.java:181)-
I have seen that result set has all the records.
Can you please help me here is that any time can mentioned in resultSet.
Thanks,
Mukesh

Answer 1

Hi,
After run some more test execution and adding the connection.isClosed() in the traces I have seen that below mentioned exception.
Caused by: java.sql.SQLException: Operation invoked on a bad Jdbc connection please check database connectivity
at com.inprise.visitransact.jdbc2.ConnectionProxy.checkConnectionTimeout(ConnectionProxy.java:1136)
at com.inprise.visitransact.jdbc2.ConnectionProxy.isClosed(ConnectionProxy.java:891)
at com.lucent.iems.platform.fm.dataaccess.AbstractBaseQuery.getData(AbstractBaseQuery.java:144)
... 30 more
I have seen the connection was not closed till 10 min 19 sec. I have printed in logs also.
2010/05/14 10:16:11;conn is valid before:false
2010/05/14 10:21:25;conn is valid before:false
2010/05/14 10:24:15;conn is valid before:false
2010/05/14 10:26:30;conn is valid before:false
Is it possible that connection get bad in this time period. This exception I saw in Borland Application server API
private void checkConnectionTimeout()
throws SQLException
if(_holder != null)
if(_holder.getState() == Jdbc2ConnState.BusyTimedOut)
throw new SQLException("A JDBC connection can't be used beyond transaction timeout or busyTimeout");
if(_holder.getState() == Jdbc2ConnState.Discarded)
throw new SQLException("Operation invoked on a bad Jdbc connection please check database connectivity");
But not sure why this connection is discarded.