Oracle DB daily partitioning

Question

I have the following table

  CREATE TABLE \"METRIC_VALUE_RAW\" 
   (    
    \"SUBELEMENT_ID\" INTEGER NOT NULL , 
    \"METRIC_METADATA_ID\" INTEGER NOT NULL ,          


        

Answer 1

here is an example how to do it on Oracle 11g and it works very well. I haven't tried it on Oracle 10g, you can try it.

This is the way, how to create a table with daily partitions:

CREATE TABLE XXX (
    partition_date   DATE,
  ...,
  ...,
)
PARTITION BY RANGE (partition_date)
INTERVAL (NUMTODSINTERVAL(1, 'day'))
(
   PARTITION part_01 values LESS THAN (TO_DATE('2000-01-01','YYYY-MM-DD'))
)
TABLESPACE  MY_TABLESPACE
NOLOGGING;

As you see above, Oracle will automaticaly create separate partitions for each distinct partition_day after 1st January 2000. The records, whose partition_date is older than this date, will be stored in partition called 'part_01'.

You can monitore your table partitions using this statement:

SELECT * FROM user_tab_partitions WHERE table_name = 'XXX';

Afterwards, when you would like to delete some partitions, use following command:

ALTER TABLE XXX DROP PARTITION AAAAAA UPDATE GLOBAL INDEXES

where 'AAAAAA' is parition name.

I hope it will help you!