JDBC returning empty result set

Question

I\'m using JDBC for very simple database connectivity.

I have created my connection/statement and executed a query. I check the query object of the statement in the

Answer 1

In the past I had similar issues in code such as this:

querystr = "your sql select query string"

resultset = statement.executeQuery(querystr)

while (resultset.next())
{
//do something with the data. 
//if you do something fairly involved in this block (sequentially, in the same thread)
//such as calling a function that acts on the data returned from the resultset etc.
//it causes the resultset fetch to wait long enough for resultset.next() to 
//unexpectedly return null in the middle of everything
}

What I did in this situation was to load up all data into a local memory data structure with minimum wait on resultset.next(). Then I did whatever I had to on the data from the local data structure after gracefully closing resultset. This behavior was with Oracle 10 on Unix backend/JDK 1.6.0_22 client under Windows XP.

Hope this helps.