Using the command line

You can copy an object class using the commands provided here at command line.

About this task

View the object classes contained in the schema issue the command:
idsldapsearch -b cn=schema -s base objectclass=* objectclasses
Select the object class that you want to copy. Use an editor to change the appropriate information and save the changes to <filename>. The issue the following command:
idsldapmodify -D <adminDN> -w <adminPW> -i <filename>
where <filename>contains:
dn: cn=schema
changetype: modify
replace: objectclasses
objectclasses: ( <mynewobjectClass-oid> NAME '<mynewObjectClass>'
DESC '<A new object class I copied for my LDAP application>'
SUP '<superiorclassobject>'<objectclasstype>
MUST (<attribute1> $ <attribute2>) 
MAY (>attribute3> $ <attribute4> $ <attribute3>) )