How do I create a snapshot view for a specific baseline in a stream in ClearCase?

If I try to change the baseline to an already existing snapshot, then CC says that I cannot reinstall the baseline that was created in some thread.

This is normal. This means that some work (checkouts / checkins) has been done since the base frame was selected.

If you need to see (as in "just watch, read-only"), you can create another project with just one thread. In this empty flow, you will be able to select any baseline you need (if the linked component is not modified, you can also change this baseline).
Then you create a snapshot view by referencing this new "consultation" stream.

The bottom line is that you cannot consult the old baselines of a component in a stream where the same component is being modified (and changed)

Another way to quickly consult baseline content:

• through dynamic view (because you are skipping "update" - downloading files - completely
• more specifically, a basic dynamic view that does not reference any UCM stream.

in this dynamic view, you simply add the selection rule to your config parameter:

element * MY_BASELINE_X.Y.Z

      

        
        
        
      

    

And here you go: instant access.
You won't be able to do any checks because ClearCase will detect that these files are part of a UCM component.
But you can:

• file explorer
• edit the configuration specification and replace the baseline with any other baselines.

2 warnings:

• use the full name of the baseline, not its name
• set the correct vob (dynamically, if vob is not set, you won't see one file!)