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What is a Rollback segment entry ?
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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 |
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