Answer / orawhiz

A Database contains one or more Rollback Segments to
temporarily store "undo" information.

Answer / gvmahesh

roll back segment means it is a an dynamic memory location
for storing all the transactional(INSRT,UPDATE,DELETE) data.
untill we commited or rollback that data.

Answer / mohan

rollback is undo the sql and plsql statments.

what are corelated subqueries

1 Answers   Global Infotech,

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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,

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Explain overloading. Can functions be overloaded?

0 Answers  

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How to define Data Block size ?

2 Answers  

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What privilege is needed for a user to create indexes in oracle?

0 Answers  

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Will the Optimizer always use COST-based approach if OPTIMIZER_MODE is set to "Cost"?

1 Answers  

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If server is in US and client is in india there is timezone is diffrence, How can we display date in indian time when data is displayed from US server timezone?

1 Answers  

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What are inner join and outer join?

3 Answers  

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How to execute the package in oracle?

0 Answers  

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what is difference between cartesian join & cross join even they give same result?

4 Answers   Bank Of America,

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does the query needs a hint to access a materialized view?

1 Answers  

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What are transaction isolation levels supported by oracle?

0 Answers  

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