Log files location in oracle apps 11i, R12.1 and R12.2

Log files location in oracle apps 11i:

Start/Stop script log files location:
$COMMON_TOP/admin/log/CONTEXT_NAME/

OPMN log file location:
$ORACLE_HOME/opmn/logs/ipm.log

Apache, Jserv, JVM log files locations:
$IAS_ORACLE_HOME/Apache/Apache/logs/ssl_engine_log
$IAS_ORACLE_HOME/Apache/Apache/logs/ssl_request_log
$IAS_ORACLE_HOME/Apache/Apache/logs/access_log
$IAS_ORACLE_HOME/Apache/Apache/logs/error_log
$IAS_ORACLE_HOME/Apache/JServ/logs

Concurrent log file location:
$APPL_TOP/admin/PROD/log or $APPLLOG/$APPLCSF

Patch log file location:
$APPL_TOP/admin/PROD/log

Worker Log file location:
$APPL_TOP/admin/PROD/log

AutoConfig log files location:
Application Tier:
$APPL_TOP/admin/SID_Hostname/log//DDMMTime/adconfig.log

Database Tier:
$ORACLE_HOME/appsutil/log/SID_Hostname/DDMMTime/adconfig.log

Error log file location:
Application Tier:
$APPL_TOP/admin/PROD/log

Database Tier :
$ORACLE_HOME/appsutil/log/SID_Hostname


In R12, the log files are located in $LOG_HOME (which translates to $INST_TOP/logs):

Concurrent logs location:
$LOG_HOME/appl/conc - > location for concurrent requests log and out files
$LOG_HOME/appl/admin - > location for mid tier startup scripts log files

Apache Logs (10.1.3 Oracle Home which is equivalent to iAS Oracle Home - Apache, OC4J and OPMN):
$LOG_HOME/ora/10.1.3/Apache - > Location for Apache Error and Access log files
$LOG_HOME/ora/10.1.3/j2ee - > location for j2ee related log files
$LOG_HOME/ora/10.1.3/opmn - > location for opmn related log files

Forms & Reports related logs (10.1.2 Oracle home which is equivalent to 806 Oracle Home)
$LOG_HOME/ora/10.1.2/forms
$LOG_HOME/ora/10.1.2/reports

Startup/Shutdown Log files location:
$INST_TOP/apps/$CONTEXT_NAME/logs/appl/admin/log

Patch log files location:
$APPL_TOP/admin/$SID/log/

Clone and AutoConfig log files location:
Database tier: 
RDBMS $ORACLE_HOME/appsutil/log/< context >/StageDBTier_< timestamp >.log

Application tier:
$INST_TOP/admin/log/StageAppsTier_< timestamp >.log

Where the logs for the admkappsutil.pl are located? 
$INST_TOP/admin/log/MakeAppsUtil_< timestamp >.log


Log files location in R12.2:

Log files of Online patching (adop) in EBS R12.2:

The adop log files are located on the non-editioned file system (fs_ne), under:
$NE_BASE/EBSapps/log/adop/<adop_session_id>/<phase>_<date>_<time>/<context_name>/log

This log directory will contain patch logs, patch lgi and patch worker logs.
adop(phase=fs_clone) Online pathcing filesystem cloning process related log files are found under:
$INST_TOP/admin/log

Autoconfig log files location:
Applicaion Tier:
$INST_TOP/admin/log/<MMDDhhmm>

Database Tier: 
$ORACLE_HOME/appsutil/log/<CONTEXT_NAME>/<MMDDhhmm>

Log files for start/stop of services from $ADMIN_SCRIPTS_HOME:
In below directory we will find log files related to start/stop process of oacore, forms, apache, opmn,
weblogic admin server/node manager:

$LOG_HOME/appl/admin/log

Log/Out files for Concurrent programs/managers location:
Log files: $APPLCSF/$APPLLOG (or $NE_BASE/inst/<CONTEXT_NAME>/logs/appl/conc/log)
Out files: $APPLCSF/$APPLOUT (or $NE_BASE/inst/<CONTEXT_NAME>/logs/appl/conc/out)

OPMN and OHS processes log file location:
Below directory contains log files related OPMN process(opmn.log),
OPMN Debug logs(debug.log), HTTP Transaction logs (access.log),security settings related logs.

$IAS_ORACLE_HOME/instances/<ohs_instance>/diagnostics/logs


Node Manager log file location in R12.2:
Log file is generated by Node Manager and contains data for all domains that
are controlled by Node Manager on a given physical machine.

$FMW_HOME/wlserver_10.3/common/nodemanager/nmHome1/nodemanager.log

Weblogic log files location:
Initial settings for AdminServer and Domain level information is written in this log file.

$EBS_DOMAIN_HOME/sysman/log

Log files for server processes initiated through Weblogic in Oracle R12.2.4 are in below location:
Stdout and stderr messages generated by the forms, oafm and oacore services are located
at NOTICE severity level or higher are written by Weblogic Node Manager to below directory.

$EBS_DOMAIN_HOME/servers/<server_name>/logs/<server_name>.out