APPS 12.1.* log files:

Autoconfig log file:

Apps:
$INST_TOP/appl/$CONTEXT_NAME/admin/log/$MMDDHHMM/adconfig.log

Db:
$ORACLE_HOME/appsutil/log/$CONTEXT_NAME/adconfig.log $ORACLE_HOME/appsutil/log/$CONTEXT_NAME/NetServiceHandler.log

Startup/Shutdown Log files:

$INST_TOP/logs/appl/admin/log

Apache, OC4J and OPMN:

$LOG_HOME/ora/10.1.3/Apache
$LOG_HOME/ora/10.1.3/j2ee
$LOG_HOME/ora/10.1.3/opmn

Patch log:

$APPL_TOP/admin/$SID/log/
Workflow Mailer log:

$APPLCSF/$APPLLOG/FNDCPGSC*.txt

Concurrent log:

$INST_TOP/apps/$CONTEXT_NAME/logs/appl/conc/log

OAM (Oracle Application Manager) log:

$APPLRGF/oam/

Clone log:

Preclone log files in source instance

Apps:
$INST_TOP/apps/$CONTEXT_NAME/admin/log/ (StageAppsTier_MMDDHHMM.log)

Db:
$ORACLE_HOME/appsutil/log/$CONTEXT_NAME/(StageDBTier_MMDDHHMM.log)

Clone log files in target instance:

Apps :
$INST_TOP/apps/$CONTEXT_NAME/admin/log/ApplyAppsTier_.log

Db:
$ORACLE_HOME/appsutil/log/$CONTEXT_NAME/ApplyDBTier_.log

- Alert Log File:
$ORACLE_HOME/admin/$CONTEXT_NAME/bdump/alert_$SID.log

Concurrent OUT Directory:

$APPLCSF/$APPLOUT  or $APPLCSF/out

APPL_TOP - this is the top level directory for the Applications

• $APPLCSF - the top level directory where the concurrent manager stores the log and out files of concurrent requests
• $APPLCSF/$APPLLOG - concurrent request log files( As describe above)
• $APPLCSF/$APPLOUT - concurrent request out files( As describe above)
• $APPLTMP - Applications temporary files
• $APPLPTMP - PL/SQL temporary files   or /usr/tmp (default tmp directory)

Startup and shutdown messages:

–Startup/Shutdown error message related to tech stack (10.1.2, 10.1.3 forms/reports/web)

$INST_TOP/logs/ora/ (10.1.2 & 10.1.3)
$INST_TOP/logs/ora/10.1.3/Apache/error_log[timestamp]
$INST_TOP/logs/ora/10.1.3/opmn/ (OC4J~…, oa*, opmn.log)$INST_TOP/apps/$CONTEXT_NAME/logs/ora/10.1.2/network/ (listener log)
$INST_TOP/logs/appl/conc/log (CM log files)

Other log files in R12

1) Database Tier
1.1) Relink Log files :
$ORACLE_HOME/appsutil/log/$CONTEXT_NAME /MMDDHHMM/ make_$MMDDHHMM.log

1.2) Alert Log Files :
$ORACLE_HOME/admin/$CONTEXT_NAME/bdump/alert_$SID.log

1.3) Network Logs :
$ORACLE_HOME/network/admin/$SID.log

1.4) OUI Logs :
OUI Inventory Logs :
$ORACLE_HOME/admin/oui/$CONTEXT_NAME/oraInventory/logs

2) Application Tier

$ORACLE_HOME/j2ee/DevSuite/log
$ORACLE_HOME/opmn/logs
$ORACLE_HOME/network/logs

Tech Stack Patch 10.1.3 (Web/HTTP Server)
$IAS_ORACLE_HOME/j2ee/forms/log
$IAS_ORACLE_HOME/j2ee/oafm/log
$IAS_ORACLE_HOME/j2ee/oacore/log
$IAS_ORACLE_HOME/opmn/logs
$IAS_ORACLE_HOME/network/log
$INST_TOP/logs/ora/10.1.2
$INST_TOP/logs/ora/10.1.3
$INST_TOP/logs/appl/conc/log
$INST_TOP/logs/appl/admin/log

Patching related log files in R12 :

Application Tier– adpatch log – $APPL_TOP/admin//log/
Developer (Developer/Forms & Reports 10.1.2) Patch – $ORACLE_HOME/.patch_storage
Web Server (Apache) patch – $IAS_ORACLE_HOME/.patch_storage
Database Tier opatch log – $ORACLE_HOME/.patch_storage