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Where we use PPI in real time??? What is the disadvantages
of PPI?

Question Posted / harsha

Answers were Sorted based on User's Feedback



Where we use PPI in real time??? What is the disadvantages of PPI?..

Answer / yuvaevergreen

PPI arranges the rows in a data block using the value that
we mention in ddl. Range processing would be faster.
Basically rowid would not be used instead value would be used.


create table emp
(
emp char(10),
hiredate date
)
upi(emp)
partition by range_n
(hiredate between date '2000-10-10' and date '2010-10-10'
each interval '1' year);

Is This Answer Correct ?    5 Yes 1 No

Where we use PPI in real time??? What is the disadvantages of PPI?..

Answer / yuvaevergreen

Disadv: Joins to Non-Partitioned Tables can take longer.
Additional overhead of two-byte Partition number.

Is This Answer Correct ?    2 Yes 1 No

Where we use PPI in real time??? What is the disadvantages of PPI?..

Answer / tdguy

adv: If the query uses a range within the partition, FTS
can be avoided. faster than secondary index, if used
properly. Deletion of partitions is fast.
disadv: when joined to non partitioned table, may take
long time to process.

Is This Answer Correct ?    0 Yes 0 No

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