FNDCRM is conflict resolution manager used by the concurrent managers. You should stop all concurrent managers with adcmctl.sh stop apps/apps_pw, relink fnd executables with adadmin and restart with adcmctl.sh start apps/apps_pw from $ADMIN_SCRIPTS_HOME, or %ADMIN_SCRIPTS_HOME% on Windows.
We have two application servers. On two differenrt physical machine.
FNDCRM has started on secondary this time.
Where is its log?
In $APPLCSF/$APPLLOG ?
It was usullay started on primary.
Can we let it go on secondary?
You can query the Conflict Resolution Manager in Concurrent->Manager->Define and specify a primary and secondary node. Maybe you start the concurrent managers on the secondary node first.
How To Activate Parallel Concurrent Processing In R12 (Doc ID 1525233.1)
You can let it go or stop the concurrent managers on both nodes and force it to a primary and restart on the primary first then secondary.
The logs are visible from $APPLCSF/$APPLLOG and are available in the Concurrent->Manager->Administer forms and in Oracle Applications Manager Generic Services HTML screens.