Displaying the OID of a DO

The OID of a derived object is the permanent identifier recorded in the VOB database for the DO.

It does not change over the life of the DO, unlike the DO-ID (see Reuse of DO IDs). To display the OID, use the command describe -fmt "%On". For example:

cleartool describe -fmt "%On\n" x.o 
b7afc83e.2f2311d3.a382.00:01:80:7b:09:69