Add a new aprtition to existing table

Question

Hi all,
we have already a table badge2 in our database we need to add partition but when we add this like we get some errors. below is the structure of the table .please any one suggest me how do i add a partition to existing table. quick response will be higly appreciated.
Name Null? Type
EMP_TYPENO NUMBER(10)
EMP_NO NUMBER(10)
EMP_DATE DATE
EMP_TIME DATE
EMP_EVINT NUMBER(1)
EMP_FLAGE NUMBER(1)
MAC VARCHAR2(50)
EMP_CARDNO NUMBER(3)
when i run these queries it give errors like this
sql> alter table badge2 partition by range (emp_date)
add partition p1 values less than (TO_DATE('01/01/2005', 'DD/MM/YYYY')));
ERROR at line 1:
ORA-01735: invalid ALTER TABLE option
or
sql> alter table badge2 partition by range (emp_date)
partition p1 values less than (TO_DATE('01/01/2005', 'DD/MM/YYYY')));
ERROR at line 1:
ORA-01735: invalid ALTER TABLE option
or
SQL> alter table badge2
add partition p1 values less than (TO_DATE('01/01/2004', 'DD/MM/YYYY'));
alter table badge2
ERROR at line 1:
ORA-14501: object is not partitioned
BEST REGARDS

Answer 1

Hi,
You can only add partitions to a partitioned table. When the table is non-partitioned table you will be greeted with an error as shown below:
SQL> create table t(dt date);
Table created.
SQL> alter table t add partition  p1 values less than (TO_DATE('01/01/2004', 'DD/MM/YYYY'));
alter table t add partition  p1 values less than (TO_DATE('01/01/2004', 'DD/MM/YYYY'))
ERROR at line 1:
ORA-14501: object is not partitionedIf the table is already partitioned then you can add partitions as shown below:
SQL> create table t1( dt date) partition by range(dt)
  2  (partition p1 values less than (TO_DATE('01/01/2004', 'DD/MM/YYYY')));
Table created.
SQL> alter table t1 add partition p2 values less than (TO_DATE('01/02/2004', 'DD/MM/YYYY'));
Table altered.
SQL>I would suggest you to read this document for a clear understanding on how partition are created and maintained:
http://download.oracle.com/docs/cd/E11882_01/server.112/e10713/schemaob.htm#CFAGCHCD
http://download.oracle.com/docs/cd/B19306_01/server.102/b14220/partconc.htm#sthref2570
http://download.oracle.com/docs/cd/B19306_01/server.102/b14231/partiti.htm#i1108745
Regards
Asif Momen
http://momendba.blogspot.com