oracle.apps.fnd.framework.OAException: Illegal method call because there is no database connection

Problem Statement >>>>>> 

Issues while login to EBS R12

oracle.apps.fnd.framework.OAException: Illegal method call because there is no database connection

Error while invoking Main Menu. java.io.FileNotFoundException: /opt/oracle/EBSDEV/apps/inst/apps/EBSDEV_mkkappsserver1/appl/fnd/12.0.0/secure/EBSDEV.dbc (Too many open files)

# Shutdown eBiz AS10g services (adstpall.sh)
# Run the following command to clear out the states and persistence files
rm $ORA_CONFIG_HOME/10.1.3/opmn/logs/states/*
rm -fr $INST_TOP/ora/10.1.3/j2ee/oacore/persistence/*
rm -fr $INST_TOP/ora/10.1.3/j2ee/oafm/persistence/*
rm -fr $INST_TOP/ora/10.1.3/j2ee/forms/persistence/*

Restart services and monitor the instance


Cheers !!!!!!!!!!!!