Too many open cursor problem

[Pan, Jiantao]

We have tried to use slide agaist oracle.
And found out there is a problem with too many opened cursors.
It seems that this is because in JDBCDescriptorStore, after each 
statement.execute(s); 
There is no statement.close();
Furthermore. it will be better to have 
resultset.close();
statement.close(); 
in finally block so that we always close after using one.

Thanks and have a good weekend.