How to split huge partition

Question

hi !
i have partitioned table:
create table t1 (d date)
partition by range (d)
partition p_min values less than (TO_DATE(' 2006-01-01 00:00:00', 'SYYYY-MM-DD HH24:MI:SS', 'NLS_CALENDAR=GREGORIAN')),
partition p_01 values less than (TO_DATE(' 2007-01-01 00:00:00', 'SYYYY-MM-DD HH24:MI:SS', 'NLS_CALENDAR=GREGORIAN')),
partition p_02 values less than (TO_DATE(' 2008-01-01 00:00:00', 'SYYYY-MM-DD HH24:MI:SS', 'NLS_CALENDAR=GREGORIAN')),
partition p_max values less than (maxvalue)
);the problem is: my p_max partition grow to >500GB and split it into several P_% partitions takes ages. how can i do it in the most efficienf and fast way ?
my database is 10.2.0.2@hp-ux 11.23, 4cpu
thank you for help.

Answer 1

Hello,
How much data I mean volumewise you got in P_MAX partition and when you split up how much time it took?
Another approach will be wholesome just create another partitioned table with all the old partitions as compressed (so they save you storage and give some boost to query), offcourse if you are not perfoming heavy DML on old partitions.
1. Create a new empty partitioned table with old partition as compressed.
2. insert into new_part_table select * from old_part_table; Use APPEND hint to speed up and compression benefit.
3. Drop old indexes and recreate in new partitions.
Another approach you already mentioned making use of exchange partitions.
Regards