Generally speaking, I would say no.
Every LDAP entry, including the schema (cn=schema) maintains a last modifyTimeStamp, but it won't tell you what objectclass/attribute type was added because the entire schema is represented as a single LDAP entry.
Furthermore, there are usually several ways to update the schema, over LDAP or by copying/modifying a new schema manually. Manual changes are difficult to track.
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Thank you Sylvain.
We are using Oracle Internet Directory ( OID ), cn=subschemasubentry doesn't even have the last modifyTimestamp, Is there a way to find it from Oracle DB. OID uses Oracle DB has database.