It also frees resources held by the transaction. After you commit the transaction, the changes are visible to other users' statements that execute after the commit. This statement also erases all savepoints in the transaction and releases transaction locks. A Rollback Segment is a database object containing before-images of data written to the database.
Rollback segments are used to: Undo changes when a transaction is rolled back. Ensure other transactions do not see uncommitted changes made to the database. A simple rollback or commit erases all savepoints.
When you roll back to a savepoint , any savepoints marked after that savepoint are erased. The savepoint to which you roll back remains. You can reuse savepoint names within a transaction. So yes, by default, if you're just using INSERT , the records you insert will be committed, and there is no point trying to roll them back.
This is because triggers fire during a transaction. When the trigger fires the current transaction is still not complete. In database technologies, a rollback is an operation which returns the database to some previous state. You can also go through our other related articles to learn more —. Submit Next Question. By signing up, you agree to our Terms of Use and Privacy Policy.
Forgot Password? This website or its third-party tools use cookies, which are necessary to its functioning and required to achieve the purposes illustrated in the cookie policy. This operation is a statement-level rollback. This operation has the following characteristics:. The unsuccessful statement does not cause the loss of any work that preceded it in the current transaction.
Any side effects of an atomic statement, for example, triggers invoked upon execution of the statement, are considered part of the atomic statement.
Either all work generated as part of the atomic statement succeeds or none does. Erases all savepoints created after that savepoint. The named savepoint is retained, so you can roll back to the same savepoint multiple times. Prior savepoints are also retained. Releases all table and row locks acquired since the savepoint.
0コメント