RE: Index Maintenance Vs Insert Response Time
Date: Tue, 7 Feb 2012 15:59:51 +0000
Check your b level from dba_indexes and see if it jumped from 2 to 3, or 3 to 4 etc, once you crossed the 10 million row threshold. Also try to run a alter index rebuild online, including valid storage parameters. Also look into dbms_stats on those indexes.
From: oracle-l-bounce_at_freelists.org [mailto:oracle-l-bounce_at_freelists.org] On Behalf Of Antony Raj Sent: Tuesday, February 07, 2012 10:24 AM To: oracle-l_at_freelists.org
Subject: Index Maintenance Vs Insert Response Time
Our application have a staging table which has 3 indexes on it.There are two INSERTs running everyday by selecting different sets of data from other application tables.Both inserts were inserting ~ 45,000 rows everyday.The current row count of this table is 32 million(Not partitioned).
Both INSERTs took ~ 1-2 minutes until the table's row count has reached 10 million and then the elapsed time has been increased to 6-7 minutes Since we insert the same amount of rows into this table,the expectation from the developers is that the inserts should run within 2 minutes all days. Any explanations?