Java.lang.NoClassDefFoundError: oracle/dfw/impl/common/TempFileManager
After successfully installing second OAM application on the server which already have an up and running OAM application, while starting the Admin and OAM Managed server , i got below error in log file under $DOMAIN_HOME/servers/oam_server1/logs/oam_server1.out
Caused by: java.lang.
at oracle.dfw.spi.portable.
at oracle.dfw.framework.
at oracle.dfw.framework.
at oracle.dfw.spi.portable.
at oracle.as.jmx.framework.util.
at oracle.dfw.spi.portable.
at oracle.as.jmx.framework.
Reason: This issue happens because DFW file manager is unable to clean the oracle-dfw* temporary files under /tmp location as they are owned and locked by some other user.
Example, you have software installed by user “oamuser” but there are oracle-dfw* files under /tmp which are owned by another user “idmuser” then during startup of domain servers , you will notice the above issue.
-rw-r—– 1 idmuser dba oracle-dfw-6571569143910850809.tmp.lck
-rw-r—– 1 idmuser dba oracle-dfw-956008752907188903.tmp.lck
Solution:- This can be resolved in 2 ways:-
1) Go to /tmp directory and remove oracle-dfw* files and restart all domain servers
2) If you have multiple installations on same server by different users, then follow below steps:-
2.1 -Create a directory where you want the temp files for 2nd installation to be written
mkdir -p /tmp/oam_2nd
2.2- Edit SetDomainEnv.sh under $DOMAIN_HOME/bin to include below lines:-
EXTRA_JAVA_PROPERTIES=”-Djava.io.tmpdir=/tmp/oam_2nd ${EXTRA_JAVA_PROPERTIES}”
export EXTRA_JAVA_PROPERTIES
2.3- Re-Start the Admin and Managed Servers.
Tips on Ports to modify for multiple OAM installations on same server coming soon…..