Java EE (Java Enterprise Edition) General Discussion

HI,

I have a question about optimizing Database Hits from a Bean.

I have a java bean that is currently in request scope.
All methods in the bean returns Vector which contains the contents of different JDBC queries - Several Select Statements.

After the bean is instantiated all the methods are called separately
ie Vector v1=MyBean.getVector1(a, b);
Vector v2=MyBean.getVector2(b);
Vector v3=MyBean.getVector3(b,a);
all the methods have something in common which is that they all accept a b or c as parameters in different orders and combinations.

As a result each page of the application is slow.
Apart from Optimizing queries and table structure with indexes etc, I'm under the impression that I could optimize this.

How would you guys optimize the Bean Code?

I'm under the impression that since i use this same bean on every page (although the parameters are different for every page because they are passed in from the querystring ), I am better off putting the bean in session variable .
What else would you guy do to improve the performance -- interms of java code.

Currently it is using java beans (not enterprise java beans) on a weblogic server with oracle 8 i database.
I am using SQL statements instead of stored procedures - the sql statements are in the
stephen