今天想安裝一個MySQL Migration Toolkit，在網上下載了mysql-workbench-gpl-5.2.36-win32.msi和mysql-gui-tools-5.0-r17-win32.msi，并安裝成功，但是每次啟動MySQLMigrationTool.exe的時候都報錯誤：

MySQL Generic Runtime Environment 2.0.12 Type 'help' or '?' for help. Type 'quit' to exit the shell.Lua Shell initialized.Registered 12 struct definition files.Initializing native loader...Initializing java loader...ERROR: The JRE 1.4 or newer cannot be found.Please make sure the Sun JRE 1.4 or newer is installed correctly.Verify the following registry key:HKEY_LOCAL_MACHINE/SOFTWARE/JavaSoft/Java Runtime Environment/1.4/RuntimeLib Error initializing Java module loader (10012). Please check the ./java and ./java/lib directories.Initializing Lua loader...Initializing Python loader...Registered 5 builtin modules.Registered 13 Lua modules. /

后來按照網上的教程修給了注冊表：[HKEY_LOCAL_MACHINE/SOFTWARE/JavaSoft/Java Runtime Environment/1.4]"RuntimeLib"，導入注冊表的文件內容如下：

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE/SOFTWARE/JavaSoft/Java Runtime Environment/1.4]

"RuntimeLib"="D://PRogram Files (x86)//Java//jre6//bin//client//jvm.dll"

但是依然不能解決問題。最后突然想到，我當前系統安裝的MYSQL Migration Toolkit是i586也就是32位的，而當前系統的JRE是x64也就是64位的，我想可能是因為這兩者之間存在不兼容。后來我在網上下載了32位的JRE：jre-6u30-windows-i586.exe。最后問題就解決了。

原文地址：http://www.cnblogs.com/xwdreamer/archive/2011/12/23/2299429.html