Problem in IBM Websphere Process server 7.0 "Out of Memory error"

Last week I have seen a strange Out of Memory error in websphere process server 7.0.
More info about error:
When calling wsadmin tasks from built ws_ant under the product_install_root_bin directory of WPS 7 it through Out of memory error.

Attention to users who is using ant based application deployment solutions:
Please be aware that WPS7 has problem when you use ant for application deployments ,Hence plan or use alternative solutions for time being like administrative console or wsadmin scripting client (WAS_HOME/bin/wsadmin.sh or .bat) to deploy your applications. But good news for Websphere portal users hence its just works fine with Websphere Portal 7
Will keep you updated info as soon as I get the solution.

What is Service Data Object (SDO)

Service Data Object (SDO) provides a framework for data application development that simplifies the J2EE data programming model.

The use of the SDO API to work with a business object.

You can use SDO APIs to do the following tasks:

Create a business object at runtime
Set the value for the simple-typed attribute of a business object
Set the value for the complex-typed attribute of a business object
Set the value for an attribute that is an array of a complex type
Retrieve the values for attributes of various types in the business object