Need to reclaim space from dwh tables.

We have couple of large tables (> 200G) in one of the DWH schema. I need to reclaim space on the mountpoint.
I have used ALTER TABLE <> MOVE COMPRESS; command to compress these tables.
Now in dba_segments it is showing the improvement. 200g table came down to 60G. However I am not able to see any change in datafile and in mountpoint, I beleive due to the HWM.
I tried shrink for the tables, it did not help.
Could you please suggest any other approach.

refer to
http://jonathanlewis.wordpress.com/2010/01/30/free-space/
http://jonathanlewis.wordpress.com/2010/02/06/shrink-tablespace/
Anand

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Reclaim space from DBFs

Hi All,
I have one query regarding tablespace reclaim space. I have users tablespace which is having 5 dbfs. Some of the DBFs of USERS tablespace having autoextend on with max size 32G and some of the DBFs not having autoextend on and maxsize 4G.
Now when I checked the USERS TBS through EM , I come to know only few MBs out of 20G are in used in 3 DBFs of USERS tablespace and rest of 2 dbfs are in good in use. Now I want to reclaim the space from 3 dbfs say users03,users04 and users05. users01 and users02 are properly in used. I want to reclaim the space from 03,04 and 05.
can I have any idea how to reclaim space from dbfs? I try with alter database datafile ...resize but giving error "ORA-03297: file contains used data beyond requested RESIZE value".
please suggest me,
Thanks...

Yes, I think you are understanding how it works. For a visual example, if this is your data file:
XXXX--XX-XXXX-XXXX-XXXX-XXXXXXX-----------------
and you delete some data
XX----X--------X------------------X-----------------
The datafile can be resized only down to
XX----X--------X------------------X
Which tools are available to do this efficiently vary by database version, for example in my 9.2.0.6 database I can use exp/imp, CREATE TABLE AS SELECT, rebuild indexes (mostly) online, exp/imp, move LOBs around with ALTER TABLE ... MOVE LOB, or other strategies - some of these are more work than others, and all will take some amount of time. In 8i There are fewer options; beginning with 10g data pump and DBMS_REDEFINITION are available; in 11g the index rebuilds don't lock the data, so the time may be less of a concern.
Before you even spend the time to shrink these data files, consider the space needs for USERS. If the extended size was a one-time thing, then shrinking datafiles may be justified. If USERS may grow that large again then a data file shrink is a lot of work for little gain.

I need to copy data from a table in one database (db1) to another table in

Hi
I need to copy data from a table in one database (db1) to another table in another database (db2).
I am not sure if the table exists in db2,,,if it doesnot it needs to be created as well data also needs to be inserted...
How am I supposed to this using sql statements..?
I shall be happy if it is explained SQL also...
Thanking in advance

How many rows does the table contains? There are manyway you can achieve this.
1. export and import.
2. create a dblink between two databases and use create table as select, if structure doesnot exists in other database, if structure exists, use, insert into table select command.
example:
create a dblink in db2 database for db1 database.
create table table1 as select * from table1@db1 -- when there is no structure present
-- you need to add constraints manually, if any exists.
insert into table1 select * from table1@db1 -- when there is structure present.
If the table contains large volume of data, I would suggest you to use export and import.
Jaffar

Need to fetch value from a table based on data range

Hello there,
I was hoping that the community could give me a hand with this little puzzle I got.
I am currently creating a Time Dimension for a data wharehouse, and I have the requirement to populate a column named SEASON (e.g: Summer, Winter, Spring, Autumn) for each date row. So for the 20/Dec/2013, the Season column must say Winter.
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DimTime Table
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FULLDATE
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SEASON
MONTH
MONTHDAY
WEEK
WEEKDAY
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2010
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2
9
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4
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5
278
06-MAR-10
2010
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6
9
6
279
07-MAR-10
2010
3
7
9
7
This entire table is being populated using Oracle functions to manipulate a date field from another table, named PDATE:
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FROM (SELECT DISTINCT pdate, EXTRACT(year from pdate) year, EXTRACT(month from pdate) month,
EXTRACT(day FROM pdate) monthday, to_number(to_char(to_date(pdate,'DD/MM/YY'),'IW')) week,
TO_CHAR(pdate, 'D') weekday
FROM Performance PER
ORDER BY pdate);
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As you can see, Season wasn't populated. Since the solstices and equinoxes vary for each year, I can't just say that Summer start at a given date (e.g: 21 of June) because one year it could be the 19/Jun, another the 22/Jun, etc. So in order to solve this problem, I have a table named Season which defines the START and END dates for the seasons:
Season Table
SEASON#
SEASONNAME
YEAR
DATEFROM
DATETO
1
Spring
2010
01-MAR-10
30-MAY-10
2
Summer
2010
31-MAY-10
29-AUG-10
3
Autumn
2010
30-AUG-10
28-NOV-10
4
Winter
2010
29-NOV-10
27-FEB-11
5
Spring
2011
28-FEB-11
29-MAY-11
6
Summer
2011
30-MAY-11
28-AUG-11
7
Autumn
2011
29-AUG-11
27-NOV-11
8
Winter
2011
28-NOV-11
26-FEB-12
9
Winter
2009
30-NOV-09
28-FEB-10
This is the bit I don't know how to do. How can I make sure that I populate the correct Season in my DimTime table based on the season specified in the Season table?
Thanks in advance for your help!
Regards,
P.

Just join to table Season:
INSERT
INTO DimTime(
               timeid,
               fulldate,
               year,
               month,
               monthday,
               week,
               weekday,
               seasonname
SELECT tim_seq.NEXTVAL,
          pdate,
          year,
          month,
          monthday,
          week,
          weekday
    FROM (
           SELECT DISTINCT pdate,
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                            EXTRACT(month from pdate) month,
                            EXTRACT(day FROM pdate) monthday,
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                            TO_CHAR(pdate,'D') weekday,
                            seasonname
             FROM Performance PER,
                   season
             WHERE pdate between datefrom and dateto
SY.

Need assistance searching records from multiple tables - Please Help!

Hi, I've been trying to solve this problem for several weeks now, and I have exhausted all of my knowledge and experience. I need help, and I hope someone here can give me some direction.
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My dataset consistes of two tables:
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I don't know what I'm doing wrong, though. I can search a dataset if I am only querying one table and pulling records from that table. However, whenever I try to add a second table and perform queries on that table to get records from the first table, I can't return any records.
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No, I am connected via ADO.NET. I don't think SQL CE can connect through ODBC (or if it can, I haven't been able to figure out how, yet). So this isn't a stored procedure.
When I examine the link, I can only choose an Inner Join or a Left Outer Join. Right Outer and Full Outer are not available. Could this be a problem with the dataset I'm using?
Could you explain what you mean by display all of the records and then choose the selection criteria?

Need to delete data from main table and all child tables ...

hi all,
i need to delete rows pertaining to perticular table and all the child
tables basing on certain code.i need to write a procedure to which i will
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like del_info(tab_name,code)
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perting to code 760.
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help ???
Ravi Kumar M

Hi,
Depends how you defined referential integrity.
You can use ON DELETE CASCADE, please read the next doc http://download-west.oracle.com/docs/cd/B10501_01/server.920/a96540/clauses3a.htm#1002692
Hope this help you,
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I have sales order no VBAK-VBELN.
I need billing plan item detaisl from FPLT TABLE.
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Edited by: abap_friends on Jul 8, 2010 8:17 AM

Hi,
try with this fm
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            i_posnr                      = ip_posnr
          TABLES
            e_fplt                       = it_fplt
          EXCEPTIONS
            no_billingplan_allowed       = 1
            no_billingplan_found         = 2
            OTHERS                       = 3
or
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IF NOT i_fplnr[] IS INITIAL.
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I am using RBIBGL00 standard batch program in my report to create a batch session and in turn execute it.
Batch session is getting created and it is getting executed as well.
Issue:
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Please help me to resolve this issue.
Regards'
Madan.

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Hello,
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hi Paolyn,
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Hi,
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Help needed to merge values from two tables -

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test1.val = test2.val + test3.val
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NOTE: In database with real table values - each of them have millions of rows in them. So effeciency is very important here;
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Name Null? Type
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Name Null? Type
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VAL NUMBER
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Urgent:Logic needed to fetch data from Internal Table

Here i have an internal table having Emp no,Emp name,Salary fields....
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helpfull ans ill be rewarded.

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reward if helpfull..............
Edited by: sam k on May 27, 2008 12:43 PM
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Need to reclaim space from dwh tables.

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