How to Increase Java Heap Size in Oracle EBS R12

SELECT DEVELOPER_PARAMETERS from FND_CP_SERVICES
where SERVICE_ID = (select MANAGER_TYPE from FND_CONCURRENT_QUEUES
where CONCURRENT_QUEUE_NAME = 'FNDCPOPP');

J:oracle.apps.fnd.cp.gsf.GSMServiceController:-mx512m
OR
J:oracle.apps.fnd.cp.gsf.GSMServiceController:-mx1024

Before update ebs application down.
-----------------------------------------------

update FND_CP_SERVICES
set DEVELOPER_PARAMETERS =
'J:oracle.apps.fnd.cp.gsf.GSMServiceController:-mx2048m'
where SERVICE_ID = (select MANAGER_TYPE from FND_CONCURRENT_QUEUES
where CONCURRENT_QUEUE_NAME = 'FNDCPOPP');

After this autoconfig execute on both tier.
------------------------------------------------------

SQL> select DEVELOPER_PARAMETERS from FND_CP_SERVICES
where SERVICE_ID = (select MANAGER_TYPE from FND_CONCURRENT_QUEUES
where CONCURRENT_QUEUE_NAME = 'FNDCPOPP');
  2    3
DEVELOPER_PARAMETERS
--------------------------------------------------------------------------------
J:oracle.apps.fnd.cp.gsf.GSMServiceController:-mx512m

SQL> exit
Disconnected from Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Ap