How to increase oacore/jvm processes in R12.1.3

Below are the steps to increase oacore process:

1)Take a backup of context file and opmn.xml file. a. /u01/inst/apps/<CONTEXT_NAME>/ora/10.1.3/opmn/conf/opmn.xml
b.$CONTEXT_FILE

2)Modify $CONTEXT_FILE as follows
From
<oacore_nprocs oa_var="s_oacore_nprocs">8</oacore_nprocs>
To
<oacore_nprocs oa_var="s_oacore_nprocs">16</oacore_nprocs>

3) Modify /u01/inst/apps/<CONTEXT_NAME>/ora/10.1.3/opmn/conf/opmn.xml file under oacore section as follows:
(<process-type id="oacore" module-id="OC4J" status="enabled"
working-dir="$ORACLE_HOME/j2ee/home">)
From
<process-set id="default_group" numprocs="8"/>
To
<process-set id="default_group" numprocs="16"/>

4) Just bounce Apache services, no need of autoconfig.  If your application services are already running, just reload the ocaore processes using adopmnctl.sh reaload command.