Finding the next primary key value.

[kiran vuppla]

 
 I would like to insert data in to database using IBatis <insert> but I am not 
sure what value I need to use for "primary key" column as I am not what is the 
next primary key value. Can you some one let me know how to find the 
nextPrimaryKey Value in a table? Here sessionID is primarykey for which I need 
to find the next unique value.
 
<insert id="insertSession" parameterClass="com.java.red.session">
  insert into PPSession (sessionID, name, createdOn, createdBy) values
   ( sessionID, #name#, #createdOn#, #createdBy#)
</insert>
 
Thanks in advance.
KV