Hi,
When you reboot Weblogic Machine, you may need start up Weblogic Server.
If you don’t know what is the weblogic server and how to install it, you can read the following article.
Firstly, You need to start Nodemanager like following.
nohup sh /u01/app/user_projects/domains/DOMAIN_NAME/bin/startNodeManager.sh &
If Weblogic Nodemanager Started successfully, then you can start weblogic server like following. Change
nohup sh /u01/app/user_projects/domains/DOMAIN_NAME/bin/startWebLogic.sh -Dweblogic.management.username=weblogic -Dweblogic.management.password=weblogic12345 &