- SCN: The system change number, or SCN, is a numeric stamp that the database automatically increments for every committed transaction that occurs in the database.
- XID: This is the global transaction identifier.Each transaction that is executed within the database is tracked and assigneda global transaction identifier, which is essentially a transaction identification number.
Without going into great detail, Both are increased each time a transaction is committed, SCN is to identify rows and XID is to identify Transactions, am I right ?
THKS!!!