If a profile was changed, it is saved as a separate version in the database. The old versions of the profile are not lost and can be used again at any time by copying them. Only when changes are activated is the the new version saved at operating system level too. The latest version of a profile in the database can be compared with the active version at operating system level.
For each changed profile parameter, a corresponding comment is stored in that same profile. If, for example, user BATCHMAN changes the number of update work processes in an instance profile from 0 to 1,.the following entry is made:
# old value: 0 changed by: BATCHMAN, 9.8.1995, 16:45:38 rdisp/wp_no_vb = 1
Using the versions of the profile and the associated modification comments, you should be able to trace the history of all changes. Manual changes made at operating system level can also be identified. The SAP system writes all differences in a log, and triggers an alert in the Alert Monitor.