R12.1.X, jsp source can not be read, HTTP status 404

R12.1.X, jsp source can not be read, HTTP status 404?

Solution :

1. $INST_TOP/ora/10.1.3/j2ee/oacore/application-deployments/oacore/html/orion-web.xml
Changes in justrun to recompile

2. oacore service rebounce
$INST_TOP/admin/scripts
     # adoacorectl.sh stop
     # adoacorectl.sh start 
3. retest


or 

1. Open $CONTEXT_FILE (AP Tier)
find s_jsp_main_mode,  Changes in justrun to recompile
<jsp_debug_parameters oa_var="s_jsp_main_mode">recompile</jsp_debug_parameters>
save
2. adautocfg.sh Execution (AP Tier)

3. AP service rebounce

4. retest