The ClearCase Merge Manager is an 'old' tool that was around even before UCM was even invented. Back in the old days the merge manager was the tool to use when you wanted to merge stuff from one branch to another.
In UCM the terminology has changed - you don't merge branches anymore - you deliver or rebase streams. But nevertheless the merge manager is still called for. Especially two scenarios makes it extremely useful - and your obvious choice of tool: To survive evil-twins when were talking about more than a few files and for merging colleagues work into your own unreserved checkouts when you are working on a Shared Stream.
To start the merge manager you go:
Start-> All Programs -> Rational Software -> Rational ClearCase -> ClearCase Merge Manager
Or you can simply type
So startup the Merge manager as described above, or if you already have it open, hit <CTRL+N> to start a new merge scenario.
In this case you should point out the view where you have your own unreserved checkouts (click on images to see them full size).
Go with the default values - hit finish!
From here the merge manager will find and report elements to merge.
When you start the merge(s) you'll probably be prompted with at warning saying the files are checked out - "Do you want to check them in?"
Your merge diff tool will then start up a traditional 3-way merge scenario and your result will be in a file with a
You're ready to check in!