SQL> SET TRANSACTION ISOLATION LEVEL SERIALIZABLE;

Transaction set.

SQL> CREATE TABLE Primes (p INT);

Table created.

SQL> GRANT SELECT, UPDATE, INSERT ON Primes to pagh2;

Grant succeeded.

SQL> SELECT * FROM Primes;

no rows selected





SQL> INSERT INTO Primes VALUES (41);

1 row created.







SQL> SELECT * FROM Primes;

         P
----------
        41







SQL> COMMIT;

Commit complete.













SQL> SELECT * FROM pagh.Primes;

         P
----------
        41
        43














SQL> SET TRANSACTION ISOLATION LEVEL READ COMMITTED;

Transaction set.

SQL>  INSERT INTO Primes VALUES (2);

1 row created.




















SQL> COMMIT;

Commit complete.








SQL> SELECT * FROM Primes;

         P
----------
        41
        43
         2




SQL> SELECT * FROM Primes;

         P
----------
        41
        43
         2
      2003

SQL> INSERT INTO Primes VALUES (3);

1 row created.

SQL> ROLLBACK;

Rollback complete.

SQL> SELECT * FROM Primes;

         P
----------
        41
        43
         2
      2003

SQL> SET TRANSACTION ISOLATION LEVEL SERIALIZABLE;

Transaction set.













SQL> SELECT * FROM pagh.Primes;

no rows selected





SQL> INSERT INTO pagh.Primes VALUES (43);

1 row created.









SQL> SELECT * FROM pagh.Primes;

         P                                                                      
----------                                                                      
        43                                                                      





SQL> SELECT * FROM pagh.Primes;

         P                                                                      
----------                                                                      
        43                                                                      

SQL> COMMIT;

Commit complete.











SQL> SELECT * FROM pagh.Primes;

         P                                                                      
----------                                                                      
        41                                                                      
        43                                                                      






SQL> SET TRANSACTION ISOLATION LEVEL READ COMMITTED;

Transaction set.





SQL> SELECT * FROM pagh.Primes;

         P                                                                      
----------                                                                      
        41                                                                      
        43                                                                      

SQL> INSERT INTO pagh.Primes VALUES (2003);

1 row created.

SQL> SELECT * FROM pagh.Primes;

         P                                                                      
----------                                                                      
        41                                                                      
        43                                                                      
      2003                                                                      





SQL> SELECT * FROM pagh.Primes;

         P                                                                      
----------                                                                      
        41                                                                      
        43                                                                      
         2                                                                      
      2003                                                                      






SQL> COMMIT;

Commit complete.

SQL> CREATE TABLE doedlaas (
   pk INT PRIMARY KEY
);

Table created.

SQL> INSERT INTO doedlaas VALUES (1);

1 row created.



commit;






SQL> INSERT INTO doedlaas VALUES (2);

1 row created.









SQL> INSERT INTO doedlaas VALUES (3);

INSERT INTO doedlaas VALUES (3)
            *
ERROR at line 1:
ORA-00060: deadlock detected while waiting for resource

SQL> rollback;

Rollback complete.

INSERT INTO doedlaas VALUES (1);



INSERT INTO doedlaas VALUES (1)
*
ERROR at line 1:
ORA-00001: unique constraint (PAGH.SYS_C0030509) violated





SQL> INSERT INTO doedlaas VALUES (3);

1 row created.

SQL> INSERT INTO doedlaas VALUES (2);















1 row created.