What is a Rollback segment entry ?
- 3 Answers
- 6736 Views
- TCS, I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / manvendra
ROLLBACK SEGMENT OR UNDO SEGMENT IS THE AREA IN UNDO TABLE
SPACE WHERE CHANGED OR NEW UNCOMMITTED DATA RESIDES.
WHEN WE COMMIT, UNDO SEGMENT DATA BECOME UNUSEABLE. BUT IT
STILL RESIDES IN THE UNDO SEGMENT FOR 600 SECONDS.
TO REMOVE THE CONSITANCY ISSUE FROM ORACLE DB.
| Is This Answer Correct ? | 2 Yes | 0 No |
Answer / ravi
WHEN WE COMMIT, UNDO SEGMENT DATA BECOME UNUSEABLE. BUT IT
STILL RESIDES IN THE UNDO SEGMENT FOR 900 SECONDS.
it is called undo retention period
| Is This Answer Correct ? | 3 Yes | 1 No |
Answer / ravi dutta
this contains the commited and uncommited data stored in
rollback table space prior to 9i. in 9i, it is called as
undo table space.
| Is This Answer Correct ? | 1 Yes | 0 No |
What Does DBWR do?
What constitute an ORACLE Instance?
How can you find the size of a database?
What is the functionality of SYSTEM table space ?
How to define Data Block size in Oracle?
How to calculate the approximate size of the SGA based on the size of the block,shared_pool,redo_buffer_cache and db_buffer_cache?
What is the significance of having storage clause ?
What is use of Rollback Segments In Database ?
How does Space allocation table place within a block ?
What is meant by recursive hints ?
What is SGA?
How to implement the multiple control files for an existing database ?
Oracle General 
