Use the COMMIT statement to end your current transaction and make permanent all changes performed in the transaction. A transaction is a sequence of SQL statements that Oracle Database treats as a single unit. This statement also erases all savepoints in the transaction and releases transaction locks.
If the transaction is commited, the database ensures that the modified data can always be found, even if the database or the hard disk crashes. Of course, for the latter to be true, a decent backup and recovery concept must be in place.
Until you commit a transaction:
You can see any changes you have made during the transaction by querying the modified tables, but other users cannot see the changes. After you commit the transaction, the changes are visible to other users' statements that execute after the commit.
You can roll back (undo) any changes made during the transaction with the ROLLBACK statement (see ROLLBACK.
Oracle Database issues an implicit COMMIT before and after any data definition language (DDL) statement.
You can also use this statement to
Commit an in-doubt distributed transaction manually
Terminate a read-only transaction begun by a SET TRANSACTION statement
Oracle recommends that you explicitly end every transaction in your application programs with a COMMIT or ROLLBACK statement, including the last transaction, before disconnecting from Oracle Database. If you do not explicitly commit the transaction and the program terminates abnormally, then the last uncommitted transaction is automatically rolled back.
A normal exit from most Oracle utilities and tools causes the current transaction to be committed. A normal exit from an Oracle precompiler program does not commit the transaction and relies on Oracle Database to roll back the current transaction.
Syntax
COMMIT
The following statements permanently save all analytic workspace changes made so far in your session. The COMMIT command also saves database changes made in your session outside Oracle OLAP.
COMMIT
