After installing ORACLE11GR2 for the first time, it was curious to point out that when you click on SQL Developer under Application development, a window pops up, To choose a java.exe path, I will say the JDK1.7 under the Java.exe fill in, and then shut down the interface, the next time, found the warning, the highest version must not be higher than 1.6, and no prompt changes, directly into the interface, but did not find the location of the modification, later, think of the software installation of the configuration file , so, began to look for, finally found: E:\app\liangjian\product\11.2.0\dbhome_1\sqldeveloper\sqldeveloper\bin In this directory there is a file sqldeveloper.conf, which is the configuration file.
We can not directly edit the changes, need to copy a copy to the desktop, and then edit, found in the setjavahome followed by an address, a closer look, is the path I configured before the Java.exe, directly delete it. Then will use this file to overwrite the original bin sqldeveloper.conf, start SQL developer again, found back to the initial start of the initialization state, and then you can re-select Java.exe, hey ...