Are you getting the following error when trying to export any result queries on Sqldeveloper ??

Fix : Open the SQL Developer installation folder, locate the sqldeveloper.conf file and finally add the below line before restarting the Sqldeveloper :

AddVMOption -Dide.user.dir=D:/SQLDeveloper/.sqldeveloper

Works fine now 🙂

N.B : Replace the above sqldeveloper path with your sql developer installation folder path