R12.2 Apache and Weblogic log file locations

Apache Logs

cd $IAS_ORACLE_HOME/instances/*/diagnostics/logs/OHS/EBS_web_*/
 

OPMN Log
 

cd $IAS_ORACLE_HOME/instances/*/diagnostics/logs/OPMN/opmn/

 
Weblogic Logs

cd $IAS_ORACLE_HOME/../wlserver_10.3/common/nodemanager $EBS_DOMAIN_HOME/servers/oa*/logs/

 

 $EBS_DOMAIN_HOME/servers/forms*/logs/

 $EBS_DOMAIN_HOME/servers/AdminServer/logs/

 $EBS_DOMAIN_HOME/sysman/log/

Source: Oracle® E-Business Suite Maintenance Guide