oracle SQL Developer 17.2 - 无法启动 Java 虚拟机
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SQL Developer 17.2 - Unable to launch the Java Virtual Machine
提问by 4532066
SQL Developer version 4.2.0.17 is set up on a computer I'm using (I'm using Windows).
SQL Developer 版本 4.2.0.17 设置在我使用的计算机上（我使用的是 Windows）。
The folder for that version contains a jdk folder and the SQL developer runs fine.
该版本的文件夹包含一个 jdk 文件夹，SQL 开发人员运行良好。
I downloaded SQL Developer 17.2 and unzipped the file. When I went to run the .exe I was asked to confirm the location of the jdk on the computer.
我下载了 SQL Developer 17.2 并解压了文件。当我去运行 .exe 时，我被要求确认 jdk 在计算机上的位置。
At that time, I didn't realise that the jdk folder was already in the folder for SQL Dev 4.2.
当时，我没有意识到 jdk 文件夹已经在 SQL Dev 4.2 的文件夹中。
There is also an 'OraHome_WF' folder on the c:\ drive, which contains a jdk folder, so I confirmed that was the location of the jdk folder when first launching SQL Dev 17.2.
c:\ 驱动器上还有一个“OraHome_WF”文件夹，其中包含一个 jdk 文件夹，因此我在首次启动 SQL Dev 17.2 时确认这是 jdk 文件夹的位置。
Now when I launch SQL Dev 17.2 I get an error message:
现在，当我启动 SQL Dev 17.2 时，我收到一条错误消息：
Unable to launch the Java Virtual Machine Location at path: C:\OraHome_WF\jdk\jre\bin\msvcr100.dll
无法在以下路径启动 Java 虚拟机位置：C:\OraHome_WF\jdk\jre\bin\msvcr100.dll
I looked in the 17.2 folder to see if there were any config or settings files that might have been updated after I put the wrong jdk path in, so I could point to the correct jdk folder, but I can't see anything.
我查看了 17.2 文件夹，看看是否有任何配置或设置文件在我输入错误的 jdk 路径后可能已更新，因此我可以指向正确的 jdk 文件夹，但我什么也看不到。
I tried deleting the 17.2 files and unzipping the 17.2 folder again, but when I launched SQL Dev I got the same error without being asked where the jdk folder is located.
我尝试删除 17.2 文件并再次解压缩 17.2 文件夹，但是当我启动 SQL Dev 时，我得到了同样的错误，而没有被问到 jdk 文件夹的位置。
Is there any way I can work around this problem?
有什么办法可以解决这个问题吗？
I already tried this workaround: SQL Developer error Unable to find Java Virtual Machine
我已经尝试过这个解决方法： SQL Developer error Unable to find Java Virtual Machine
采纳答案by krokodilko
According to the documentation, user preference settings are located in the following locations:
根据文档，用户首选项设置位于以下位置：
SQL Developer user preferences
Windows: C:\Users\\AppData\Roaming\SQL Developer\systemn.n.n.n.n
Linux or Mac OS X: ~/.sqldeveloper/systemn.n.n.n.n
SQL Developer 用户首选项
Windows：C:\Users\\AppData\Roaming\SQL Developer\systemn.nnnn
Linux 或 Mac OS X：~/.sqldeveloper/systemn.nnnn
Removing this subdirectory should fix the problem (and in this case it fixed it).
删除这个子目录应该可以解决这个问题（在这种情况下它修复了它）。
