Reuse table space?

Hi gurus.
We did an upgrade to our R/3 system recently. When we did that, we created a new QA (QA2) client that I then pointed to my BW QA box. I think that I have deleted all of the R/3 QA1 info from BW, but my database has outgrown the available space. Is there any way to reuse table space without doing a reorg? I have been searching this forum as well as others and can't find an answer that fits my scenario.
Thanks! Points will be awarded!

Hi,
Cube may have aggregates associated with them.
Aggregates
An aggregate is a materialized, aggregated view of the data in an InfoCube. In an aggregate, the dataset of an InfoCube is saved redundantly and persistently in a consolidated form. Aggregates make it possible to access InfoCube data quickly in Reporting. Aggregates serve, in a similar way to database indexes, to improve performance. We Create aggregates in the following cases:
The execution and navigation of query data leads to delays with a group of queries.
You want to speed up the execution and navigation of a specific query.
You often use attributes in queries.
You want to speed up reporting with characteristic hierarchies by aggregating specific hierarchy levels.
An aggregate is made up of characteristics and navigation attributes belonging to an InfoCube. You can group the data according to different Aggregation levels. In doing so, you can also store values for hierarchy levels belonging to an external hierarchy. Both time-dependent attributes and time-dependent hierarchies can be used in aggregates. Characteristics that are not used in the aggregate are brought together.
If you have created aggregates for an InfoCube and entered data for them, the OLAP processor automatically accesses these aggregates. When navigating, the different results are consistent. The aggregate is transparent for the end user. New data is loaded at a defined time using logical data packages (requests) in an aggregate. After this transaction, the new data is available for rolling up in reporting.
An aggregation level indicates the degree of detail to which the data of the underlying InfoCube is compressed. An aggregation level must be assigned to each component of an aggregate (characteristics and navigation attributes). You can choose one of the following aggregation levels:
All characteristic values ("*"): The data is grouped by all the values of the characteristic or navigation attribute.
Hierarchy level ("H"): The data is grouped by the hierarchy level node.
Fixed value (F): The data is filled according to a single value.
To use an aggregate for an InfoCube when executing a query, you must first activate it and then fill it with data. Select the aggregate that you want to activate and fill. The system creates an active version of the aggregate .
System Activity
The system creates the tables required by the aggregate definition in the database. Aggregates are created according to the same schema as InfoCubes.
An aggregate contains two fact tables and a number of dimension tables.
The table names are derived from the technical names of the aggregates.
If the new data packages (requests) are loaded into the InfoCube, they are not immediately available for Reporting via an aggregate. To provide the aggregate with the new data from the InfoCube, you must first load the data into the aggregate tables at a time which you can set. This process is known as a Rollup.
If Infocube has aggregates and If you had loaded data to this Infocube, then, the newly loaded data wont be available for reporting untill and unless rollup is done. Roll up means adding the newly loaded data to aggregates.
If you switch off the aggregates it wont be identified by the OLAP processor. report will fetch the data directly from the cube. Switching off the aggreagte won't delete any data,but temporarly the aggregate will not be availbale as if it is not built on the info cube. No reporting is not possible on swtiched off aggregates. The definition of the aggregate is not deleted.
You can temporarily switch off an aggregate to check if you need to use it. An aggregate that is switched off is not used when a query is executed.This aggregate will be having data from the previous load's. If the aggregate is switched off means it wont be available for reporting but data can be rolled up into it.
If u deactivate the aggregates the data will be deleted from the aggregates and the aggregate structure will remain the same.
The system deletes all the data and database tables of an aggregate. The definition of the aggregate is not deleted.
Later when you need those aggregate once again you have to create it from scratch.
If I have more than one aggrgate and one of them is switched off then during roll up
The data will be loaded to switched off aggregates also.
But if the aggregate is deactivated the data will not be loaded to the aggregates. you have to do the initial fill by activcating the aggregates. Its like a init load.
Scenario: Suppose the info cube needs to be undergone some changes after agggregate rollup (say wrong data needs to be deleted),so first we need to deactivate the aggregate and then delete the wrong requests from the cube and refill the aggregate to capure the existing changes.In this way changes will reflect in the aggregate,if not the aggregate will still contain the wrong data.
When you delete aggregates both Structure as well as data is deleted.
Aggregation ratio
Aggregation ratio is no of records selected to no of records transfered
refer this presentation: https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/cccad390-0201-0010-5093-fd9ec8157802
it can be done from TCode ST03n or also from the query developed on BW statisitics/technical content
Check the below links:
https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/cbd2d390-0201-0010-8eab-a8a9269a23c2
Aggregates
Aggregates
aggregates
Aggregates
To view the contents of an aggregrate, goto the Maintanance screen of the Aggregrate, Select the Aggregate (techincal name) for which you want to view the data and then click on "Aggregate Data" (Push button with glasses symbol).
"---" sign is the valuation of the aggregate. You can say -3 is the valuation of the aggregate design and usage. ++ means that its compression is good and access is also more (in effect, performance is good). If you check its compression ratio, it must be good. -- means the compression ratio is not so good and access is also not so good (performance is not so good).The more is the positives...more is useful the aggregate and more it satisfies the number of queries. The greater the number of minus signs, the worse the evaluation of the aggregate. The larger the number of plus signs, the better the evaluation of the aggregate.
if "-----" then it means it just an overhead. Aggregate can potentially be deleted and "+++++" means Aggregate is potentially very useful.
Refer.
http://help.sap.com/saphelp_nw70/helpdata/en/b8/23813b310c4a0ee10000000a114084/content.htm
http://help.sap.com/saphelp_nw70/helpdata/en/60/f0fb411e255f24e10000000a1550b0/frameset.htm
Thanks,
Jituk

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How to verify reused table space in oracle 10g ?

Hi..
From my system, i have seen that the table size keep increasing event the delete query is running. Due to that, I would to check either the oracle allowed to reuse the table space or not ? if not then how could i enable it ?
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Thank you,
Baharin

You can use dbms_space.space_usage to check the for free space.
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Hi..
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Hi..
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baharin wrote:
Hi..
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short question:
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SQL > create table t3 as select * from dba_objects where rownum<10;
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SQL > select rowid from t3;
ROWID
AAABr6AADAAAAIaAAA
AAABr6AADAAAAIaAAB
AAABr6AADAAAAIaAAC--to be deleted
AAABr6AADAAAAIaAAD
AAABr6AADAAAAIaAAE--to be deleted
AAABr6AADAAAAIaAAF--to be deleted
AAABr6AADAAAAIaAAG
AAABr6AADAAAAIaAAH
AAABr6AADAAAAIaAAI
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Commit complete.
SQL > select rowid from t3;
ROWID
AAABr6AADAAAAIaAAA
AAABr6AADAAAAIaAAB
AAABr6AADAAAAIaAAD
AAABr6AADAAAAIaAAG
AAABr6AADAAAAIaAAH
AAABr6AADAAAAIaAAI
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AAABr6AADAAAAIaAAA
AAABr6AADAAAAIaAAB
AAABr6AADAAAAIaAAD
AAABr6AADAAAAIaAAG
AAABr6AADAAAAIaAAH
AAABr6AADAAAAIaAAI
AAABr6AADAAAAIaAAJ
AAABr6AADAAAAIaAAK
AAABr6AADAAAAIaAAL
AAABr6AADAAAAIaAAM
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Commit complete.
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2 /
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ROWID
AAABr6AADAAAAIaAAF
AAABr6AADAAAAIaAAE
AAABr6AADAAAAIaAAC
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AAABr6AADAAAAIaAAA
AAABr6AADAAAAIaAAB
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AAABr6AADAAAAIaAAD
AAABr6AADAAAAIaAAE --reuse
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AAABr6AADAAAAIaAAH
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Message was edited by:
shinington

so you have definitely tried to use a Winlows Server with NTFS for a 1TB++ Database ?
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Edited by: user8680179 on May 15, 2012 1:54 AM

user8680179 wrote:
i issued following commands from 'SYS' user;
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NAME TYPE VALUE
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Hi all,
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Check the size of the tablespace, if there aren't any data then drop the tablespace and create a new one.
Regards
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thanks
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Hi Matt,
Thanks for replying. It's been a very long time waiting for you ;)
---"Are you running the 9.2.0.1, 9.2.0.2, or 9.2.0.3 version of the Database?"
we are using 9.2.0.1
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What is difference between table space and shchema

what is difference between table space and shchema ?

784633 wrote:
so each user has it own space of tables - schema ?yes, but let's clarify a bit ....
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Space in bytes used by a single index in given table space

Hi All,
How can i find a table space used by index in bytes
Eg:
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Thanks

The used space in Karthik's example is the number of bytes actually used by entries in the index, not the amount of space allocated to the index itself.
To find out how much space in disk is allocated to the index you can use (as the owner of the index) something like:
SELECT bytes FROM user_segments
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John

BRtools table space creation error

hi,
Iam trying to create new table space in my R/3 system. When i went to brtools - space management sytem throwing error owner failed.I tried with all users to login like ( <SID>adm,administrator etc ...)even then same problem.Could you please suggest how to create table space with what login id
Error:
Main options for creation of tablespace in database WA6
1 - Tablespace name (tablespace) ......... [PSAPECDATA]
2 - Tablespace contents (contents) ....... [data]
3 - Segment space management (space) ..... [auto]
4 - SAP owner of tablespace (owner) ...... [EC5ADM]
5 - Data type in tablespace (data) ....... [both]
6 # Joined index/table tablespace (join) . []
Standard keys: c - cont, b - back, s - stop, r - refr, h - help
BR0662I Enter your choice:
c
BR0280I BRSPACE time stamp: 2006-06-14 21.08.45
BR0663I Your choice: 'c'
BR0259I Program execution will be continued...
BR0824E Owner EC5ADM not found in database or not SAP owner
BR0691E Checking input value for 'owner' failed
BR0669I Cannot continue due to previous warnings or errors - you can go back to
repeat the last action
BR0280I BRSPACE time stamp: 2006-06-14 21.08.45
BR0671I Enter 'b[ack]' to go back, 's[top]' to abort:
Please suggest.
- Cheers

Login as ora<sid> and run brtools. Tablespace owner will be SAP<SID> or SAPR3 depends upon your version.
Thanks
Prince

Table space not reduce after delete in oracle 11G

Hi Team,
I have a DB 11.1.0.7 on unix.
I have execute delete tables on tablespace, but this not reduce.
Thanks

935299 wrote:
What segment space management type is defined for the tablespace in question?
MANUAL
Then you should check out the documentation some more.
But even if you shrink the table segement what is that going to do for the data file size?
I don't undertand you.
ThanksYour thread is titled "Table space not reduce after delete in oracle 11G" which implies to me that you are interested in reducing the size of a tablespace (which really means reducing the size of the underlying datafile(s)).
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Table space not reduce after delete in oracle 10g

Hi..
Based on my system, i have found that my oracle table space did not reduce after the deletion query. Why ?.. Could somebody help me. As your info, I am using oracle 10g.
Thank you,
Baharin

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alter table mytable enable row movement;
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