Answer / ammar takieddin

select sum(bytes)/1024/1024 from dba_data_files;
+
select sum(bytes)/1024/1024 from v$log;

Answer / er. debashreet das

actually, size of a database can be calculated by various
factors:
1. total bytes allocated to the table, i.e., suppose we
create a table as
create table tr_deb(name varchar2(15), roll_no number(4),
branch varchar(20), photo blob(50));
then, total size will be 15 + 4 + 20 +50 = 89 bytes

2. also, calculate the primary and secondary extents. That
means we have to calculate the memory size required for
that table(relation), i.e., for tr_deb relation. This is
called primary extent.
3. Then, finally, we have to calculate(actually predict)
the secondary extent. Let us understand in this way:
suppose, our table "tr_deb" may be expanded in near future,
if students get admitted, then, we have to store their
address, phone number, etc. Again, we can decompose the
composite attributes into component attributes(sub-
attributes) and calculate their size(primary and secondary
extent)

Why do you create or replace procedures rather that drop and recreate.

0 Answers  

---

What is bulk load in oracle?

0 Answers  

---

I have table-A(1,2,3)& table-B(3,4,5).what is the different b/w below questions? A union all B? B union all A?

2 Answers   Zensar,

---

Which database is better for os platform dependency?

1 Answers  

---

SQL> CREATE TABLE to_table 2 (col1 NUMBER); Table created. SQL> CREATE OR REPLACE TRIGGER statement_trigger 2 AFTER INSERT ON to_table 3 BEGIN 4 DBMS_OUTPUT.PUT_LINE('After Insert Statement Level'); 5 END; 6 / Trigger created. SQL> CREATE OR REPLACE TRIGGER row_trigger 2 AFTER INSERT ON to_table 3 FOR EACH ROW 4 BEGIN 5 DBMS_OUTPUT.PUT_LINE('After Insert Row Level'); 6 END; 7 / Trigger created. SQL> INSERT INTO TO_TABLE VALUES(1); After Insert Row Level After Insert Statement Level 1 row created. SQL> BEGIN 2 INSERT INTO TO_TABLE VALUES(2); 3 INSERT INTO TO_TABLE VALUES(3); 4 INSERT INTO TO_TABLE VALUES(4); 5 INSERT INTO TO_TABLE VALUES(5); 6 INSERT INTO TO_TABLE VALUES(6); 7 INSERT INTO TO_TABLE VALUES(7); 8 INSERT INTO TO_TABLE VALUES(8); 9 INSERT INTO TO_TABLE VALUES(9); 10 INSERT INTO TO_TABLE VALUES(0); 11 END; 12 / WAT LL BE THE O/P??? XPLAIN IT>>>>

1 Answers   Infosys,

---

What is DTS and purpose of DTS ?

1 Answers   TCS,

---

What is an Index Segment ?

2 Answers  

---

What do database buffers contain?

0 Answers  

---

Explain joins in oracle?

0 Answers  

---

How to omit columns with default values in insert statement in oracle?

0 Answers  

---

What is Public Database Link ?

1 Answers  

---

Explain the difference between a procedure and a function? What do you understand by those terms?

0 Answers  

---