Autocommit feature in Oracle

If I set the autocommit on and execute a transaction as follows:
DELETE FROM TASK_LOG WHERE ROWNUM <= 100;
is it that Oracle commits after deletion of each record or it that the commit occurs automatically after the 100
records have been deleted?

Yep, don't turn it on. You don want to se a message 'xxxxx rows deleted', when you expected to delete only one row with autocommit on.

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