What happens when I lock a view?

When I lock a view using the table * lock statement, what happens? *

Is the view to lock up?

Or all the base tables are locked from where the view is created?

Or no lock is applied?

: D

OrionNet wrote:
Belzile,

Exactly what lock statement you use.

If, after the statement is used, then you will be able to query (select) the table and the view.

??? Table lock Oracle never prevents other users to query a table and a query never acquires a table lock. So I don't know what you were saying. In any case, a view of lock locks all the base tables:

SQL> create or replace
  2  view emp_dept_vw
  3  as
  4  select ename,dname
  5  from emp e,dept d
  6  where d.deptno = e.deptno;

View created.

SQL> select object_name
  2  from user_objects
  3  where object_id in(select id1 from v$lock where sid=(select sid from v$mystat where rownum=1))
  4  /

no rows selected

SQL> lock table emp_dept_vw in share update mode;

Table(s) Locked.

SQL> select object_name
  2  from user_objects
  3  where object_id in(select id1 from v$lock where sid=(select sid from v$mystat where rownum=1))
  4  /

OBJECT_NAME
--------------------------------------------------------------------------------
DEPT
EMP

SQL>

SY.

Tags: Database

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