The ClearCase Eraser -- Delivered Baseline

Needless to say that, to remove a stream from ClearCase, the stream must be "clean", no views, no activities, no baselines, etc. In my previous blog, I have demonstrated how to remove an activity that has change set. Today, I am going to show you how to remove a baseline that has been delivered.

Try to remove a stream with baseline on it. Got errors.
$ cleartool rmstream CBFE14.5_base_hz18@/vobs/CBFEProjects
Remove stream "CBFE14.5_base_hz18@/vobs/CBFEProjects"? [no] y
cleartool: Error: Cannot remove stream that has baselines.
cleartool: Error: Unable to remove stream "CBFE14.5_base_hz18@/vobs/CBFEProjects".

Check which baselines are on the stream.
$ cleartool lsbl -stream CBFE14.5_base_hz18@/vobs/CBFEProjects
2007-12-04T13:22:38-05 deliverbl.CBFE14.5_base_hz18.20071204.132426 HZ18 "deliverbl.CBFE14.5_base_hz18.20071204.132426"
stream: CBFE14.5_base_hz18@/vobs/CBFEProjects
component: MidTier@/vobs/CBFEProjects

Try to remove the baseline. Got errors.
$ cleartool rmbl deliverbl.CBFE14.5_base_hz18.20071204.132426@/vobs/CBFEProjects
Remove baseline "deliverbl.CBFE14.5_base_hz18.20071204.132426@/vobs/CBFEProjects"? [no] y
cleartool: Error: Cannot remove baseline that has been delivered.
cleartool: Error: Unable to remove baseline "deliverbl.CBFE14.5_base_hz18.20071204.132426@/vobs/CBFEProjects".

$ cleartool desc -l baseline:deliverbl.CBFE14.5_base_hz18.20071204.132426@/vobs/CBFEProjects
baseline "deliverbl.CBFE14.5_base_hz18.20071204.132426"
created 2007-12-04T13:22:38-05 by Zhao (HZ18.cbfedev@CBAD3-XCIDVQ)
"Baseline created by deliver on 12/4/2007 1:24:26 PM.
"
owner: hz18
group: cbfedev
stream: CBFE14.5_base_hz18@/vobs/CBFEProjects
component: MidTier@/vobs/CBFEProjects
label status: Not Labeled
change sets:
promotion level: INITIAL
depends on:
Attributes:
PromotionLevel = "INITIAL"
Hyperlinks:
Integrate@13500@/vobs/CBFEProjects -> anyactivity:timeline071204.132453@/vobs/CBFEProjects

The hyperlink looks suspecious.
$ cleartool rmhlink Integrate@13500@/vobs/CBFEProjects
cleartool: Warning: Hyperlinks of type "hltype:Integrate@/vobs/CBFEProjects" are used to implement UCM and should not be directly manipulated unless directed by customer support.
cleartool: Warning: Hyperlinks of type "hltype:Integrate@/vobs/CBFEProjects" are used to implement UCM and should not be directly manipulated unless directed by customer support.
Removed hyperlink "Integrate@13500@/vobs/CBFEProjects".

Oops, there is a warning message. However when you see the warning, it is already too late. The hyperlink removed. Now you can try to remove the baseline.
$ cleartool rmbl deliverbl.CBFE14.5_base_hz18.20071204.132426@/vobs/CBFEProjects
Remove baseline "deliverbl.CBFE14.5_base_hz18.20071204.132426@/vobs/CBFEProjects"? [no] y
cleartool: Warning: Searching PVOBs for baselines that depend upon baseline "deliverbl.CBFE14.5_base_hz18.20071204.132426". This may take a few minutes...

Removed baseline "deliverbl.CBFE14.5_base_hz18.20071204.132426@/vobs/CBFEProjects".

Now the stream is "clean" to be removed.
$ cleartool rmstream CBFE14.5_base_hz18@/vobs/CBFEProjects
Remove stream "CBFE14.5_base_hz18@/vobs/CBFEProjects"? [no] y
Removed stream "CBFE14.5_base_hz18@/vobs/CBFEProjects".