Location of Different Logfiles in Exadata Environment

On the cell nodes

================

1. Cell alert.log file

/opt/oracle/cell/log/diag/asm/cell/{node name}/trace/alert.log

or

if the CELLTRACE parameter is set just do cd $CELLTRACE

2. MS logfile

/opt/oracle/cell/log/diag/asm/cell/{node name}/trace/ms-odl.log.
or

if the CELLTRACE parameter is set just do cd $CELLTRACE

3. OS watcher output data

/opt/oracle.oswatcher/osw/archive/

To get OS watcher data of specific date :
cd /opt/oracle.oswatcher/osw/archive
find . -name '*12.01.13*' -print -exec zip /tmp/osw_`hostname`.zip {} \; 

where 12- year 01- Month 13-day

4. Os message logfile

/var/log/messages

5. VM Core files

/var/log/oracle/crashfiles 

More details can be found in the following note:

Where / How to find OS crashcore file in Exadata Systems [Linux] (Doc ID 1389225.1)

6. SunDiag output files.

/tmp/sundiag_.tar.bz2

7. Cell patching issues related logfiles:   

/var/log/cellos

The major logfile of patch application output you will find in the db node from where you are patching in the location /tmp/<cell version>/patchmgr.stdout and patchmgr.err

8. Disk controller firmware logs:

/opt/MegaRAID/MegaCli/MegaCli64 -fwtermlog -dsply -a0

On the Database nodes

=====================

1. Database alert.log

$ORACLE_BASE/diag/rdbms/{DBNAME}/{sid}/trace/alert_{sid}.log
Ex: /u01/app/oracle/diag/rdbms/dbfs/DBFS2/trace/alert_DBFS2.log

2. ASM alert.log

$ORACLE_BASE/diag/asm/+asm/+ASM{instance number}/trace/ alert_+ASM {instance number}.log
Ex: /u01/app/oracle/diag/asm/+asm/+ASM2/trace/alert_+ASM2.log

3. Clusterware CRS alert.log

$GRID_HOME/log/{node name}/alert{node name}.log

Ex: /u01/app/11.2.0/grid/log/dmorldb02/alertdmorldb02.log

4. Diskmon logfiles

$GRID_HOME/log/{node name}/diskmon/diskmon.lo*
Ex: /u01/app/11.2.0/grid/log/dmorldb02/diskmon/diskmon.log

5. OS Watcher output files

/opt/oracle.oswatcher/osw/archive/

To get OS watcher data of specific date :
cd /opt/oracle.oswatcher/osw/archive
find . -name '*12.01.13*' -print -exec zip /tmp/osw_`hostname`.zip {} \; 

where 12- year 01- Month 13-day

6. Os message logfile

/var/log/messages

7. VM Core files for Linux

/u01/crashfiles  

More details can be found in the following note:

Where / How to find OS crashcore file in Exadata Systems [Linux] (Doc ID 1389225.1)

8. Disk controller firmware logs:
    

/opt/MegaRAID/MegaCli/MegaCli64 -fwtermlog -dsply -a0