Table Partition on daily basis in oracle 10g

I Want to create partition based on sysdate on daily basis.
There will be 8 partitions. Every day data's will be get loaded into this table and everyday 8th day old data ill be get truncated.
CREATE TABLE CUST_WALLET_BALANCE_7DAYS
( ID VARCHAR2(250),
   A_DATE VARCHAR2(11),
   LAST_PROCESS_DATE DATE,
DD_OF_PROCESS_DATE NUMBER(2),
CONSTRAINT CUST_WALLET_BALANCE_7DAYS_PK PRIMARY KEY (ID,A_DATE))
PARTITION BY RANGE (DD_OF_PROCESS_DATE)
( PARTITION DAY1 VALUES LESS THAN (TO_NUBER(TO_CHAR(TRUNC(SYSDATE)),'DD')),
    PARTITION DAY2 VALUES LESS THAN (TO_NUBER(TO_CHAR(TRUNC(SYSDATE-1)),'DD')),
    PARTITION DAY3 VALUES LESS THAN (TO_NUBER(TO_CHAR(TRUNC(SYSDATE-2)),'DD')),
    PARTITION DAY4 VALUES LESS THAN (TO_NUBER(TO_CHAR(TRUNC(SYSDATE-3)),'DD')),
    PARTITION DAY5 VALUES LESS THAN (TO_NUBER(TO_CHAR(TRUNC(SYSDATE-4)),'DD')),
    PARTITION DAY6 VALUES LESS THAN (TO_NUBER(TO_CHAR(TRUNC(SYSDATE-5)),'DD')),
    PARTITION DAY7 VALUES LESS THAN (TO_NUBER(TO_CHAR(TRUNC(SYSDATE-6)),'DD')),
    PARTITION DAY8 VALUES LESS THAN (TO_NUBER(TO_CHAR(TRUNC(SYSDATE-7)),'DD'))
THIS WONT WORKS OUT. SO PLEASE SUGGEST ME WITH BETTER SOLUTION.

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Since I have already stated PARTITION PMAX can I still add partition?
2) Can I add partition even though the table has data ?
==========================
I tried to add partition ..say
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PCTFREE 10
INITRANS 1
MAXTRANS 255
STORAGE (
INITIAL 64K
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MAXEXTENTS 2147483645
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how to add partition between two partition
Edited by: pransuj on Mar 25, 2011 11:13 AM
Edited by: pransuj on Mar 25, 2011 11:14 AM

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ORA-04030: Try to alloc 65548 Bytes (CTX PRM heap,draccbx:message buffer) Out of memory
ORA-06512: In "CTXSYS.DRUE", line 191
ORA-06512: In "CTXSYS.DRUE", line 49
ORA-06512: In "CTXSYS.DRUE", line 24
ORA-06512: In "CTXSYS.DRVDDL", line 452
ORA-06510: PL/SQL: User Defined Error
BTW:
My oracle 10g run on linux AS3 box with 4xP4 and 6G Mem.
I set pga_aggregate_target=2200M, and at the beginning of creating index, the max pga alloced is about 1100M, but when one patition finished, the error arised and the max pga alloced suddenly reached 3500M. So in every times, the index status is always like below:
P1_ix usable
P2_ix Inprogress
P3_ix Inprogress
P4_ix Inprogress
P5_ix Inprogress
Thx for any help!

Try to increase LARGE_POOL_SIZE.
PGA_AGGREGATE_TARGET is not only parameter that can meddle in parallel execution.
Looks like parallel execution parameters is not correctly set. Check it all, including PARALLEL_EXECUTION_MESSAGE_SIZE.

Table Partition on daily basis in oracle 10g

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