What happens when an entire transaction is roll backed without referencing any save points?

Options
- All changes are undone made by all of the SQL statements
- The transaction locks of data is released
- The transaction ends
- All of the above

CORRECT ANSWER : All of the above

Discussion Board
Oracle Transaction

Rolling back means undoing any changes to data that have been performed by SQL statements within an uncommitted transaction. Oracle uses undo tablespaces (or rollback segments) to store old values. The redo log contains a record of changes. Oracle lets you roll back an entire uncommitted transaction. Alternatively, you can roll back the trailing portion of an uncommitted transaction to a marker called a savepoint. In rolling back an entire transaction, without referencing any savepoints, the following occurs:
1. Oracle undoes all changes made by all the SQL statements in the transaction by using the corresponding undo tablespace.
2. Oracle releases all the transaction's locks of data.
3. The transaction ends.

Prajakta Pandit 02-17-2017 05:12 AM

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