Eclipse opens blank workspace

Question

I have this weird issue where the following happens:

• fresh eclipse juno install (with all updates applied)
• works fine for a while asking which workspa

Answer 1

Just running this command helped me eclipse.exe -data C:\Development\Eclipse\Workspace

FYI this happens due to install of some plugins.

Answer 2

This same problem happened to me on Windows on two separate Eclipse installations, without installing any plugin.

I was able to get my working Workspace by clicking on File > Switch Workspace, but closing and opening Eclipse again would reset it to a default Workspace.

What apparently solved this was to force Eclipse to save Workspace settings by ticking the Prompt for workspace on startup setting in General > Startup and Shutdown > Workspaces, which I had turned off.

The next time Eclipse opened, it asked me for the Workspace, and it had my correct one first in the list. I asked not to be prompted again for it and now it opens the right workspace when I launch Eclipse once again.

Answer 3

I have exactly the same problem on OSX, for no reason, one fine day, Eclipse will start-up with a new blank workspace!

And to all the stupid answers and responders out there: YES I know how to set and select a default workspace! And NO creating a new workspace, re-importing lots of projects and loosing all my 30+ database connections under my Toad Extension, is not an option.

What I found is that

• For some reason Eclipse creates a directory /Users/user_name/Documents/workspace which is the blank workspace it starts-up with (incorrectly)
• My usual workspace is under /Users/user_name/Documents/Development/eclipse

The solution is (this is on Mac OSX, don't know if it is the same on Windows):

1. Goto your Eclipse directory where you run Eclipse from (mine is /Applications/eclipse)
2. In {eclipse_dir}/configuration open the file config.ini
3. Find the line osgi.instance.area.default=@user.home/... and confirm that it is pointing to the bogus workspace directory.
4. Modify the path of this entry to point to the correct workspace
5. Save the config.ini file.
6. Try starting Eclipse and it should open your workspace now.
7. If your Eclipse get stuck loading plugins now, goto your workspace directory and look for the .metadata directory (its hidden). Inside the .metadata directory, remove the .mylyn directory and restart Eclipse.
8. Once Eclipse started with the correct workspace loaded, do a proper Eclipse shutdown to ensure your workspace is closed and saved properly.

This worked for Eclipse Juno.

Hope this helps!

Answer 4

I solved this problem as per JJ-za's answer, except steps 2 and 3:

2. In {eclipse_dir}/configuration/.settings open the file org.eclipse.ui.ide.prefs (when Eclipse is not running)

3. Find the line RECENT_WORKSPACES= and confirm that the workspace is pointing to the correct workspace directory and that multiple workspaces are separated by \n