32bit? or 64bit?oracle 客户端的要和 sql developer 的版本一致(32/64bit)
oracle 论坛里看到的:1. Go to C:\Users\%USERNAME%\AppData\Roaming and rename "SQL Developer" folder to something like "SQL Developer-backup" to make sure you won't loose history etc.2. Start SQL Developer and it will recreate the folder from the scratch. You can later copy the history from the backup folder.
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