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wt is the difference between truncate and delete in which
situation u use delete and truncate in real time..
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Answer / mukesh
TRUNCATE removes all rows from a table.The operation cannot
be rolled back and no triggers will be fired. As such,
TRUCATE is faster and doesn't use as much undo space as a
DELETE.
The DELETE command is used to remove rows from a table. A
WHERE clause can be used to only remove some rows. If no
WHERE condition is specified, all rows will be removed.
After performing a DELETE operation you need to COMMIT or
ROLLBACK the transaction to make the change permanent or to
undo it. Note that this operation will cause all DELETE
triggers on the table to fire.
TRUNCATE are DDL commands, whereas DELETE is a DML command.
As such, DELETE operations can be rolled back (undone),
while DROP and TRUNCATE operations cannot be rolled back.
| Is This Answer Correct ? | 20 Yes | 1 No |
Answer / siva
In addition to Mukesh's answer, the truncate and delele
commands can also used on partitions in Oracle to truncate
or delete the records from the particular partition..
| Is This Answer Correct ? | 2 Yes | 1 No |
Answer / babusuresh159
hi mukesh and siva thanks for posting answers...
in real time is dr any specif sitchuation to use truncate or delete
| Is This Answer Correct ? | 0 Yes | 0 No |
Answer / bose3508
After completion of history extraction from database you
may go for truncate.To cleanse the oltp database.
| Is This Answer Correct ? | 0 Yes | 0 No |
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