A question regarding database table partitioning and table indexes in 10g

Question

We are considering partitioning a large table in our 10g database, in order to improve response time. I believe I understand the various partitioning options, but am wondering about the indexes built over the table. When the table is partitioned, will the indexes also be partitioned "automatically"? Or do I need to also partition the indexes as well?
Thank you in advance to any and all who respond to this question.

Answer 1

Hello,
When you build your partiton table you just need to create indexes locally and they will be partitioned automatically, see following example
CREATE TABLE YY_EVENT
  PART_KEY       DATE                              NOT NULL,
  SUBPART_VALUE  NUMBER                             NULL,
  EVENT_NAME     VARCHAR2(30 BYTE)                  NULL,
  EVENT_VALUE    NUMBER                             NULL
TABLESPACE TEST_DATA
PARTITION BY RANGE (PART_KEY)
  PARTITION Y_EVENT_200901 VALUES LESS THAN (TO_DATE(' 2009-02-01 00:00:00', 'SYYYY-MM-DD HH24:MI:SS', 'NLS_CALENDAR=GREGORIAN'))
    TABLESPACE TEST_DATA, 
  PARTITION Y_EVENT_200902 VALUES LESS THAN (TO_DATE(' 2009-03-01 00:00:00', 'SYYYY-MM-DD HH24:MI:SS', 'NLS_CALENDAR=GREGORIAN'))
    TABLESPACE TEST_DATA
-- This will create paritioned indexes automatically
CREATE INDEX MY_IDX ON YY_EVENT
(EVENT_NAME)
  TABLESPACE TEST_DATA
LOGGING
LOCAL;Regards
Edited by: OrionNet on Feb 25, 2009 12:05 PM