Jbo:datasource orderbyclause never resets during application

Question

My application uses a dynamic viewobject and I use a jbo:datasource to retrieve my information and print it in my jsp page.
now when running my application the first set of the orderbyclause in jbo:datasource for instance
String columnName = "first";
<jbo:DataSource id="_LOV" whereclause="<%=whereClause%>" orderbyclause="<%=columnName%>" forwardonly="true" appid="module" viewobject="view"/>
as you can see the orderbyclause is dynamic
then once a call the jsp again the orderbyclause does not change, even though the variable value stays the same, it acts like
String columnName = "second";
<jbo:DataSource id="_LOV" whereclause="<%=whereClause%>" orderbyclause="<%=columnName%>" forwardonly="true" appid="module" viewobject="view"/>
but the order by is still set to "first"
I am dealing with 10g version, in 11g it works no problem.

Answer 1

There is a setting in the app module configuration called "Disconnect Application Module Upon Release". By default it's set to false which means the AM retains database connections between http requests (you could say they're sticky). Setting it to true will release datasource connections between requests. You should also set jbo.txn.disconnect_level = 1 which will passivate AM in memory rather than DB
You will find more info in these blog posts:
http://andrejusb.blogspot.com/2011/10/adf-bc-tuning-with-do-connection.html
http://docs.oracle.com/cd/E15523_01/web.1111/b31974/bcampool.htm
http://andrejusb.blogspot.com/2010/02/optimizing-oracle-adf-application-pool.html