This is happened on Saturday around 11:30 AM and we resolve this until 03:00 PM..
Occurance : in the middle of training, connection to Oracle apps server is down.
We looked the server, someone has plug out the RJ45 cable.
The Solution came in two part : first, its about the wrong slot to plug the cable in. Second is about OC4J services down..
First, we plug the RJ cable to the server..
we try to ping from client to server : host unreachable.. we even try to use another cables, even a cross cable
the server itself cannot ping its gateway.
Lately we found out that we’ve plug in the RJ45 cable to the wrong NIC card slot after some one plug it out..
there are 2 slot : eth0 (active) and eth1 (inactive), we use only the eth0
after plugged in the cable to the eth0 NIC we’re able to ping from server to client, back and forth.
Beforehand we’ve changed the eth0 IP address, Gateway, with DB tier services is up and Apps tier services is down, restart network services, changed /etc/hosts file
we set the IP address and gateway to the state of before changes are made and reboot the machine.
We startup the DB tier service, its running well but took a long time to mount the Oracle 10G database.
2nd trouble occured, that we cannot startup all Apps tier services. We’ve tried torun autoconfig both the apps tier and DB tier but these attempts haven’t solved the problem.
looking into the log file, we found that something is wrong, OC4J cannot start..
we run” adocorectl.sh status” to check the OC4J status, yes from OC4J total of 4 services, 1 is down.
OC4J oafm N/A Down
OC4J forms N/A Down
OC4J oacore N/A Down
HTTP_Server HTTP_Server 29760Down
we googling a little and found this steps is solving the problem :
1.Stop Oracle Apps Tier (Stop Oracle Apps Servies)
2. cd $INST_TOP/ora/10.1.3/j2ee
rm -fr oacore/persistence/*
rm -fr oafm/persistence/*
rm -fr forms/persistence/*
3.Start Oracle Apps Tier (Start Oracle Apps Servies)
Yes ! Apps Tier is all running now. yipee.. but 3 hours (too long) become an instant DBA with Iman Abdulah Siswosapoetro..
Thanks to Iman and Joben the Master..