execute dbms_lock.sleep(42) : dbms_lock « System Packages « Oracle PL / SQL





execute dbms_lock.sleep(42)

 
SQL>
SQL> create table emp
  2  ( empno      NUMBER(4)    constraint E_PK primary key
  3  , ename      VARCHAR2(8)
  4  , init       VARCHAR2(5)
  5  , job        VARCHAR2(8)
  6  , mgr        NUMBER(4)
  7  , bdate      DATE
  8  , sal        NUMBER(6,2)
  9  , comm       NUMBER(6,2)
 10  , deptno     NUMBER(2)    default 10
 11  ) ;

Table created.

SQL> insert into emp values(1,'Tom','N',   'TRAINER', 13,date '1965-12-17',  800 , NULL,  20);

1 row created.

SQL> insert into emp values(2,'Jack','JAM', 'Tester',6,date '1961-02-20',  1600, 300,   30);

1 row created.

SQL> insert into emp values(3,'Wil','TF' ,  'Tester',6,date '1962-02-22',  1250, 500,   30);

1 row created.

SQL> insert into emp values(4,'Jane','JM',  'Designer', 9,date '1967-04-02',  2975, NULL,  20);

1 row created.

SQL> insert into emp values(5,'Mary','P',  'Tester',6,date '1956-09-28',  1250, 1400,  30);

1 row created.

SQL> insert into emp values(6,'Black','R',   'Designer', 9,date '1963-11-01',  2850, NULL,  30);

1 row created.

SQL> insert into emp values(7,'Chris','AB',  'Designer', 9,date '1965-06-09',  2450, NULL,  10);

1 row created.

SQL> insert into emp values(8,'Smart','SCJ', 'TRAINER', 4,date '1959-11-26',  3000, NULL,  20);

1 row created.

SQL> insert into emp values(9,'Peter','CC',   'Designer',NULL,date '1952-11-17',  5000, NULL,  10);

1 row created.

SQL> insert into emp values(10,'Take','JJ', 'Tester',6,date '1968-09-28',  1500, 0,     30);

1 row created.

SQL> insert into emp values(11,'Ana','AA',  'TRAINER', 8,date '1966-12-30',  1100, NULL,  20);

1 row created.

SQL> insert into emp values(12,'Jane','R',   'Manager',   6,date '1969-12-03',  800 , NULL,  30);

1 row created.

SQL> insert into emp values(13,'Fake','MG',   'TRAINER', 4,date '1959-02-13',  3000, NULL,  20);

1 row created.

SQL> insert into emp values(14,'Mike','TJA','Manager',   7,date '1962-01-23',  1300, NULL,  10);

1 row created.

SQL>
SQL> col versions_starttime format a21
SQL> col versions_endtime   format a21
SQL>
SQL> create table e as select * from emp;

Table created.

SQL> alter session set NLS_TIMESTAMP_FORMAT='DD-MON-YYYY HH24:MI:SS.FF3';

Session altered.

SQL> select localtimestamp as table_created  from dual;

TABLE_CREATED
---------------------------------------------------------------------------
26-OKT-2009 10:08:54.245

SQL>
SQL> execute dbms_lock.sleep(42);

PL/SQL procedure successfully completed.

SQL> update e
  2  set    sal = sal + 10;

14 rows updated.

SQL> commit;

Commit complete.

SQL> select localtimestamp as after_update_1 from dual;

AFTER_UPDATE_1
---------------------------------------------------------------------------
26-OKT-2009 10:09:36.494

SQL>
SQL> execute dbms_lock.sleep(16);

PL/SQL procedure successfully completed.

SQL> update e
  2  set    sal = sal - 20
  3  where  deptno = 10;

3 rows updated.

SQL> commit;

Commit complete.

SQL> select localtimestamp as after_update_2 from dual;

AFTER_UPDATE_2
---------------------------------------------------------------------------
26-OKT-2009 10:09:52.657

SQL>
SQL> execute dbms_lock.sleep(42);

PL/SQL procedure successfully completed.

SQL> delete from e
  2  where  deptno <= 20;

8 rows deleted.

SQL> commit;

Commit complete.

SQL> select localtimestamp now               from dual;

NOW
---------------------------------------------------------------------------
26-OKT-2009 10:10:34.850

SQL>
SQL>
SQL> drop table emp;

Table dropped.

   
  










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