SQL Worksheet is not displaying in SQL Developer

问题

Suddenly SQL worksheet is not displaying in my SQL Developer. When I click on 'Open SQL Worksheet' or Alt+F10 nothing will appear.

I have tried many things such as: uninstalling SQL developer; cleaned the appData; changing java version; change SQL Developer version; and so on. But nothing has worked. Help?

回答1:

While any the software - SQLDeveloper got error or something worng.

You can try to backup whole sqldeveloper directory from C:\Users\AppData\Roaming\ then delete it.

But remember to backup your customer infomation!

Or reference this SQLDeveloper not starting

Hope this can help.

回答2:

I clear folder C:\Users\AppData\Roaming\SQL Developer\SqlHistory. It works for me.

来源：https://stackoverflow.com/questions/38435595/sql-worksheet-is-not-displaying-in-sql-developer