Lets forget about the statistics and
performance, but I have such type of requirenment than is there any way out
----- Original Message -----
To: Multiple recipients of list ORACLE-L
Sent: Saturday, August 31, 2002 11:58
Subject: RE: Disabling indexes -
Firstly, you are only inserting 100-400 records daily, which is not a
big deal. Even if there was a way to stop the indexes from
getting updated, it won't increase the performance by a noticable
Secondly, there is no way(as far as i know) to make the
indexes READ-ONLY with the table in READ-WRITE mode.
Thirdly, rebuilding 20 indexes on a table with 1 million record will
take a long time, in comparison updation by 100-400 records is
neither feasible nor advisable.
-----Original Message-----From: Marul Mehta
Sent: Saturday, August 31, 2002 11:08
PMTo: Multiple recipients of list ORACLE-LSubject:
Disabling indexes - temporarily
Need to know if the following is possible in
I have a table of around
(a) 30 Columns
(b) 20 out of 30 are
(c) around 1 million
Most of the time there will be heavy reads
(select queries) on this table except for some 100-400 records to be
inserted in a day. The newly inserted records will not be selected by the
queries for the next 24 hours (this is based on some business logic), thats
Now the problem is when ever a record(s) is
inserted the entire bunch of indexes is updated/rebuild by the Oracle which
considerably slows down the throughput of the system during that period of
time (until all indexes are updated).
Can we have a solution whereby indexes should
not be updated when a record(s) is inserted, because I know that these
records will not be the part of the query for the next 24 hrs. The indexes
will be re-built manually/scheduled during the off-peak hours once a day. In
this way, the next day, new records inserted a day before will be ready to
be fetched by the queries.
Note- I can't put my indexes offline not for a
single minute during peak hours.
Please see the official ORACLE-L FAQ: http://www.orafaq.com
Author: Marul Mehta
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