Possible to use interval partitions to drop old partitions?

Interval partitions can add new partitions and I can do a range by date. This is helpful. However, lets say I have alot of tables in my database and I need to keep data for different lengths of time in different tables. Can I set something in the intervals to drop older partitions?
I don't think I can, but I thought I would ask. I can do this with code. However, if oracle does it for me, I don't want to do it myself.

Can not be done but you can use the HIGH_VALUE column, or the PARTITION_POSITION columns to make decisions.
Just remember that you can never drop the root partition so build the initial partition such that it is very small and not used.

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Range partiotion using interval partitioning

Hi all,
I am trying to create a partitioned table so that a number (which date converted to number ) partition is created on inserting a new row for release_date column.
But please note that release_date column is having number data type (as per design) and people want to create an interval based partition on this.
Any work around for this?
They want data type NOT to be altered.
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prod_id number,
prod_code varchar2(3),
release_date number)
partition by range(release_date)
interval(NUMTOYMINTERVAL (1,'MONTH'))
(partition p0 values less than (20120101))
Thanks in advance

>
I am trying to create a partitioned table so that a number (which date converted to number ) partition is created on inserting a new row for release_date column.
But please note that release_date column is having number data type (as per design) and people want to create an interval based partition on this.
>
You can't use interval partitioning on the NUMBER column but you can add a VIRTUAL column based on it that uses DATE datatype.
create table product(
prod_id number,
prod_code varchar2(3),
release_date number,
rel_date DATE as (to_date(to_char(release_date), 'yyyymmdd')) VIRTUAL
partition by range(rel_date)
interval(NUMTOYMINTERVAL (1,'MONTH'))
   partition p0 values less than (to_date('20120101', 'yyyymmdd'))
)The virtual column is a metadata only column (i.e. no data is stored for it).
NOTE: you will need to modify your queries to use the 'REL_DATE' column in order to get partition pruning:
insert into product (prod_id, prod_code, release_date) values (1,'abc', 20110502)
insert into product (prod_id, prod_code, release_date) values (1,'abc', 20120502)
-- this query does NOT prune
select * from product where release_date < 20120101
|   0 | SELECT STATEMENT    |         |     1 |    38 |     4   (0)| 00:00:01 |       |       |
|   1 | PARTITION RANGE ALL|         |     1 |    38 |     4   (0)| 00:00:01 |    1 |1048575|
|* 2 |   TABLE ACCESS FULL | PRODUCT |     1 |    38 |     4   (0)| 00:00:01 |    1 |1048575|
-- this query DOES prune
select * from product where rel_date < to_date('20120101', 'yyyymmdd')
|   0 | SELECT STATEMENT       |         |     1 |    38 |     3   (0)| 00:00:01 |       |       |
|   1 | PARTITION RANGE SINGLE|         |     1 |    38 |     3   (0)| 00:00:01 |     1 |     1 |
|* 2 |   TABLE ACCESS FULL    | PRODUCT |     1 |    38 |     3   (0)| 00:00:01 |     1 |     1 |

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Creating interval parition to existing range partition

I have a table which has range partition on a number column.
CREATE TABLE TEST(
id INT NOT NULL,
start INT NOT NULL
PARTITION BY RANGE (start)
     PARTITION old_Data VALUES LESS THAN (1000000) TABLESPACE old,
     PARTITION new_Data VALUES LESS THAN (MAXVALUE) TABLESPACE new
I would like to create monthly interval partition in old_data partition. Is this possible? Don't see any syntax for supporting this scenario.

Welcome to the forum!
Whenever you post provide your 4 digit Oracle version.
>
I have a table which has range partition on a number column.
CREATE TABLE TEST(
id INT NOT NULL,
start INT NOT NULL
PARTITION BY RANGE (start)
PARTITION old_Data VALUES LESS THAN (1000000) TABLESPACE old,
PARTITION new_Data VALUES LESS THAN (MAXVALUE) TABLESPACE new
I would like to create monthly interval partition in old_data partition. Is this possible? Don't see any syntax for supporting this scenario.
>
No - it is not possible. There isn't any syntax for supporting that because integers do have have 'months' so how would Oracle partition an integer 'monthly'?
If those integers are supposed to represent Unix 'epoch' date values then in 11g you can create a virtual column of DATE datatype and partition on that.
But you will need to either recreate the table or, if you needed to do it online, use the DBMS_REDEFINITION package. Either approach results in a new table with the correct partitioning that includes the existing data.
Here is a similar table to yours with a VIRTUAL column that is partitioned by day:
drop table some_table_int
create table some_table_int (
    column_1 nvarchar2(50),
    start_t number(38,0),
    column_n number,
    start_date DATE GENERATED ALWAYS AS (
    to_timestamp(to_char( to_date('01011970','ddmmyyyy') + 1/24/60/60 * start_t, 'DD-MON-YYYY HH24:MI:SS'),'DD-MON-YYYY HH24:MI:SS')
) VIRTUAL
partition by range (start_date) interval (NUMTODSINTERVAL(7,'day'))
(partition p_19700105 values less than (to_date('19700105', 'yyyymmdd'))
/That VIRTUAL column is an ordinary DATE column and your ranges will be dates rather than numbers that have no meaning for anyone.
The VIRTUAL column is only a data dictionary entry so it won't affect any actual data.

Import one old Partition

Hi.
System: Solaris 9
DB.: Oracle 9i
My table had five partitions (PR1006_CDRCSGCONTPROV
PR1106_CDRCSGCONTPROV,PR1206_CDRCSGCONTPROV,PR0107_CDRCSGCONTPROV,PR0207_CDRCSGCONTPROV)
I exported PR1006_CDRCSGCONTPROV, but there wasn't rows.
Export parameters used
file=/pr01/work/BACKUP/oracle/iprd/logico/exp_partition_IPRD_IMS_PR1006_CDRCSGCONTPROV.dmp
log=/pr01/work/LOG/oracle/iprd/partition/exp_partition_IPRD_IMS_PR1006_CDRCSGCONTPROV.log
tables=(
IMS.CDR_CSG_CONT_PROV:PR1006_CDRCSGCONTPROV
direct=y
grants=y
indexes=y
rows=y
constraints=y
statistics=none
Export log
About to export specified tables via Direct Path ...
Current user changed to IMS
. . exporting table CDR_CSG_CONT_PROV
. . exporting partition PR1006_CDRCSGCONTPROV 0 rows exported
Export terminated successfully without warnings.
Drop partition
After I droped that partition (PR1006_CDRCSGCONTPROV).
I don't have log this process, but I'm surry there isn't this partition
Now, I'd like to import that partition (PR1006_CDRCSGCONTPROV).
I'm using theses parameters:
Path are correct.
Import parameters
file=/pr01/batch/scripts/oracle/itst/por_demanda/import_part/09022007/exp_partition_ITST_IMS_PR1006_CDRCSGCONTPROV.dmp
log=/pr01/batch/scripts/oracle/itst/por_demanda/import_part/09022007/imp_partition_ITST_IMS_PR1006_CDRCSGCONTPROV.log
tables=(
CDR_CSG_CONT_PROV:PR1006_CDRCSGCONTPROV
Log Import => ERROR
Export file created by EXPORT:V09.02.00 via direct path
import done in WE8ISO8859P1 character set and UTF8 NCHAR character set
import server uses UTF8 character set (possible charset conversion)
. importing IMS's objects into IMS
IMP-00015: following statement failed because the object already exists:
"CREATE TABLE "CDR_CSG_CONT_PROV" ("CDR_HEAD_CSS_ID" NUMBER NOT NULL ENABLE,"
Table's structure with all parititions
IMP-00057: Warning: Dump file may not contain data of all partitions of this table
IMP-00055: Warning: partition or subpartition "CDR_CSG_CONT_PROV":"PR1006_CDRCSGCONTPROV" not found in export file
Import terminated successfully with warnings.
Could you help me?
Thank's a lot

Hi.
Thank's your reply.
The table IMS.CDR_CSG_CONT_PROV has 5 partition:
PR1106_CDRCSGCONTPROV ==== HIGH_VALUE = 01/12/2006
PR1206_CDRCSGCONTPROV ==== HIGH_VALUE = 01/01/2007
PR0107_CDRCSGCONTPROV ==== HIGH_VALUE = 01/02/2007
PR0207_CDRCSGCONTPROV ==== HIGH_VALUE = 01/03/2007
PR0307_CDRCSGCONTPROV ==== HIGH_VALUE = 01/04/2007
When I tried to create a partition PR1006 (HIGH_VALUE = 01/11/2006), oracle didn't let me create old partition.
Command executed
ALTER TABLE IMS.CDR_CSG_CONT_PROV ADD PARTITION PR1006_CDRCSGCONTPROV VALUES LESS THAN (to_date('01-11-2006','DD-MM-YYYY')) TABLESPACE TSD_IMS_CDR_PARTITION04;
Log
ERROR at line 1:
ORA-14074: partition bound must collate higher than that of the last partition
Thank's again.
Leo Arruda

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Cannot drop old undo tablespace. Cause: active rollback segment

dear all.
db: oracle 10.2.0.1
os: rhel as version 5 64 bits.
This is a testing database. And my database is online and open. But i can free the external usb disk that contains my ols undotbs.
I want to drop old undo tablespace but this is not possible.
1.- In order to open my database i had my datafile( '/mnt/hdext/back_plelds/undotbs02.dbf') offline drop, and then i can to open my database.
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SQL> drop tablespace undotbs1 including contents and datafiles;
drop tablespace undotbs1 including contents and datafiles
ERROR at line 1:
ORA-01548: active rollback segment '_SYSSMU1$' found, terminate dropping
tablespace
3.- My default undo_tablespace is another that i was created before step 1.
SQL> sho parameter undo_ta
NAME TYPE VALUE
undo_tablespace string UNDOTMP
SQL>
Well i search in metalink ORA-01548 code error and in 18947.1 doc whows me that the solution is:
Action: Shut down instances that use the active rollback segments in the
tablespace and then drop the tablespace.
4.- I try to shutdown but im getting:
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ORA-00376: file 10 cannot be read at this time
ORA-01110: data file 10: '/mnt/hdext/back_plelds/undotbs02.dbf'
SQL>
This /mnt/hdext is an external USB disk and i have all permissions. I exported tables without any problem and i can read all files.
i search un metalink again ora codes (ORA-00376 ORA-01110) and the doc id: 427801.1 shows in the solution:
Drop the old undo tablespace instead of making it offline.
but when i try to drop the tablespace it shows the error describe in the step 2.
Facts:
- my tablespace UNDOTBS1 is ONLINE. I put in offline and this is not the solution.
- This is the status of my rollback segments:
SQL> select segment_name, status from dba_rollback_segs where
2 tablespace_name='UNDOTBS1';
SEGMENT_NAME STATUS
_SYSSMU1$                      NEEDS RECOVERY
_SYSSMU2$                      NEEDS RECOVERY
_SYSSMU3$                      NEEDS RECOVERY
_SYSSMU4$                      NEEDS RECOVERY
_SYSSMU5$                      NEEDS RECOVERY
_SYSSMU6$                      NEEDS RECOVERY
_SYSSMU7$                      NEEDS RECOVERY
_SYSSMU8$                      NEEDS RECOVERY
_SYSSMU9$                      NEEDS RECOVERY
_SYSSMU10$                     NEEDS RECOVERY
_SYSSMU11$                     OFFLINE
SEGMENT_NAME STATUS
_SYSSMU12$                     OFFLINE
12 rows selected.
SQL>
- I have the note (Unable to drop und tablespace In this article describe the problem but this is not the same. The difference is that i cannot drop the rollback segment that describe in step 2.
SQL> drop rollback segment "_SYSSMU1$";
drop rollback segment "_SYSSMU1$"
ERROR at line 1:
ORA-30025: DROP segment '_SYSSMU1$' (in undo tablespace) not allowed
in metalink the doc id: 173696.1 shows the solution:
Action:     Check the undo segment name and reissue statement if necessary.
i cannot drop the rollback_segment
What can i do ???
thanks a lot.

in step 4 did you try with shutdown abort?
If its still does not work then create another new table space with new file and then swtich to that tablespace http://download.oracle.com/docs/cd/B19306_01/server.102/b14231/undo.htm#sthref1504Khurram

Erase Vista old partition HDDRecovery after migration to W7

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Possible to use interval partitions to drop old partitions?

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