Oracle Read – Oracle Blogs Aggregator

the default isolation level is READ COMMITTED. It means, a session read the committed data. Session 1: SQL> set transaction isolation level read committed; Transaction set. Session 2: SQL> update emp set sal=4000 where ename='SCOTT'; 1 row updated. Session 1: SQL> select sal from emp where ename='SCOTT';        SAL ———-       3000 Session 2: SQL> commit; [...]