Set the value for the OMS ORACLE_HOME environment variable and go to ‘OMS/bin’. For example:
export ORACLE_HOME=/u01/app/oracle/product/Middleware/oms
cd $ORACLE_HOME/bin
increase timeout in minutes or disable this feature with ‘-1’ value:
./emctl set property -name oracle.sysman.eml.maxInactiveTime -value -1 -sysman_pwd sysman_password
Restart OMS to reflect the new settings:
./emctl stop oms
./emctl start oms