How to find who deleted clearCase Trigger?

In some of the vobs ClearCase triggers got deleted, don't see anything in the log too. Is there a way to find who did this ?

Solution

From the way ClearCase events are recorded

Running lshistory on the VOB object will show deletion events.
This provides at least a history of who removed a type, and when, along with any comments that were entered at removal.
Without storing these events in the VOB object, there would be no record of by who and when objects were removed.

Example:

The creation event is visible in the history.

% cleartool lshistory -long brtype:NEWBR
15-Oct-03.16:32:41     John Doe (jdoe.clearuser@host1)
 create branch type "NEWBR"

Once removed, the type object's removal event is only visible in the history.

% cleartool rmtype -rmall brtype:NEWBR
Removed branch type "NEWBR".

% cleartool lshistory -long vob:<tag>
15-Oct-03.16:32:41     John Doe (jdoe.clearuser@host1)
 destroy type in versioned object base "<tag>"
 "Destroyed branch type "NEWBR"."

In your case, look for a deletion message similar to:

"Destroyed trigger type "XXX"."

See more with this technote:

Windows Example:

M:\dynamic_view\test_vob>cleartool lshistory -all | findstr /C:"Destroyed trigger type"
  "Destroyed trigger type "VERSION"."

Note: The findstr command is used with the /C option in this example.
There is a colon with no space preceding /C indicating that everything in the quotes should be searched for as a single item.

UNIX/Linux Example:

%>cleartool lshistory -all | grep 'Destroyed trigger type'
  "Destroyed trigger type "VERSION"."