Unable to reserve the .lok file for Integrated WebLogic Server (IntegratedWebLogicServer) in Jdeveloper
If you face the error Unable to reserve the .lok file for Integrated WebLogic Serve then the first is you have to kill the process in Task Manager. Open Task Manager & check for java.exe process for higher memory consumption. End the process.
IF above does not help then go to C:\Users\RRA\AppData\Roaming\JDeveloper\system18.104.22.168.38.60.81\DefaultDomain . Delete the edit.lok file.
This error happens due to JDeveloper closes unexpected without shutting down IntegratedWebLogicServer
Error(1,1): <Line 1, Column 1>: XML-20108: (Fatal Error) Start of root element expected.
When you see a error above in the Jdeveloper, You might think that your Jdeveloper was working properly once. I had a system crash and I got the same error to solve this just extract the new version of Jdevloper and paste web.xml in myhtml->WEB-INF.