Oracle Sql Developer換成Windows主題後不能顯示表單的解決方案

安裝了最新Oracle11g R2版，開啟Sql Developer，發現介面跟以前不一樣了，不是很習慣，偶然發現設定裡可以換主題，於是換了個Windows主題，結果就是只看得到工作管理員裡的進程，卻始終不出來介面。於是猜想這肯定是寫在設定檔裡的，到安裝資料夾下去一個個找，還是沒發現。無意間搜到一個老外的文章，說的正是這個事。

下面是引用的原文：

You can reset the system to factory defaults by deleting the system folder in the C:\Documents and Settings\<your connection>\Application Data\SQL Developer\ This is a bit radical as it will delete your connections and any other settings you have made. I'm assuming you have not got a backup of your connections.
      You can just delete the preferences file. This is in that system folder in a directory \Application Data\SQL Developer\system1.5.5.59.69\o.sqldeveloper.11.1.1.59.69 and the file is product-preferences.xml
      Have SQL Developer closed when you do this and restart it after you have deleted the file.

但是我找不到，可能他說的是XP系統，最後，我找到了這個目錄：

C:\Users\<name>\AppData\Roaming\SQL Developer

然後到這個子目錄\system1.5.5.59.69\o.sqldeveloper.11.1.1.59.69\ ，刪除裡面的product-preferences.xml檔案，重啟動Sql Developer，大功告成，謝謝老外~