Estimating The Database Size before build up

Hi,
how can i estimate oracle database size before building up. is there any query or formula there to estimate the size.
i read a thread of Sir. Joel Pérez if he is available then i m requesting him to send me that docs that you are posted for the estimation query.
my mail is [email protected]
Regards
Avnish

Use the DBMS_SPACE built-in package to estimate table and index cost (size).
http://www.psoug.org/reference/dbms_space.html

Similar Messages

Should We consider Temp Data Files While Estimating The Database Size

Hi,
The Database Size is sum of physical files like
Control file
redo log file
datafiles
temp files
so i want to know why are we considering the temp files..Because it's temporary. At one stage of database, temp size it could me more and at one stage it could be less.
So why consider the temp file???
Please share your views on it..
Thanks
Umesh

So, in essence the size of your datafiles is the size of your tablespaces?No. The size of the tablespace is the sum of the sizes of the datafiles in the tablespace --- i.e. the datafiles determine the tablespace size, not the other way round.
(Although when you CREATE or ALTER TABLESPACE, you specify the sizes of the datafiles that you want to belong to the tablespace).
the temporary tablespace has space allocated to it regardless of whether there are temporary tables in that tablespace or not.Two points here :
1. On most OSs the temporary tablespace tempfile is created as a "sparse" file. So, if you issue a CREATE TEMPORARY TABLESPACE TEMP TEMPFILE 'xyz.dbf' SIZE 1000M; and then did an "ls -l" at the OS level, "xyz.dbf' would appear to be only a few tens of KBs in size. The OS "grows" the file to 1000M as necessary.
When talking to your OS administrator ensure that you get 1000M (or the AUTOEXTEND MAXSIZE !!) space allocated even though he might "see" only a few 10s of KBs used on the first day.
2. The temporary tablespace does not have objects (other than "global temporary tables" that overflow from memory to disk). It is really temporary space for joins, sorts, order bys etc.
So, your datafile size is not affected regardless of your temporary tables coming and going.Yes, your datafile sizes and tempfile sizes are independent. Yet, when "sizing" disk space for the database you must include the tempfile size. However, when reporting to IT Management with a statement "our database size is ".. you might want to break it up into components like Data Dictionary, Tables, Indexes, TemporarySpace, RedoLogs and ArchiveLogs. You could also differentiate between OS-allocated space (sizes of datafiles) and Oracle-allocated space (sizes of segments) and actual used space (which you'd have to compute !) .
Hemant K Chitale
Edited by: Hemant K Chitale on Feb 17, 2011 10:42 PM
Added (Although ....) paragraph to first point.

Estimating the backup size before running the RMAN

DB Version : 11.2
OS : Oracle Solaris 10
I need to take an ad-hoc RMAN cold backup of a 200GB DB to Local Disk. Using RMAN, is there any way I could check how much the backup size would be before I take the cold backup ?

Read the metalink How to estimate the size of an RMAN database backup [ID 1274720.1].

Estimating the Database Size using Archivelog mode

Dear OTN Forum,
I need to find guidelines to estimate the additional space needed for a database in order to operate in archivelog mode.
I've estimated the size of a database (Tables + indexes= 450 GB + 270 GB) operating in nonarchivelog mode, but I didn't know how to estimate the additional space needed to operate the database in archivelog mode.
Please any kind of information will be well received!
(paper, technical bulletins, metalink, etc.)
Best regards,
Alfredo

The space required for archive logs does not depend on the size of your database. It is dependent on 3 factors.
1. The size of your redo log members. Each archive log will be the same size as a redo log file.
2. The number of transactions you do in the database. Each transaction writes information to the redo logs, and each redo log is archived when it is full.
3. How laong a period you want to keep the archive logs available on disk for.
For example, one of our systems is a very active OLTP system with about 500 users at peak times and around 100 fairly constantly. The database is about 40Gb, but it spins 15 - 20 64Mb archive logs each day. Typically, we keep 2 days worth of logs on-line at any given time. so, this system requires between 1.8 and 2.5 GB for archive logs.
Another system, used mostly for reporting purposes, is over 100GB, but typically generates 5 - 6 32MB archive logs each week. So, it requires less than 200Mb for archive logs.
HTH
John

How to increase the database size

Hi All ,
Our Client is going to increase their customers from 3.5 million to 5 millions
(12 millions in future ) and there is no increase in the existing licenses..
At present we have very less space in Data base server. We are Going Live at the End of the Month.
How to increase the database size to meet the Client requirements.
we have to increase the No of Processerors etc...
Below are the details of Servers:
System Model: IBM,7040-681
Machine Serial Number: 830D5BF
Processor Type: PowerPC_POWER4
Number Of Processors: 2
Processor Clock Speed: 1904 MHz
CPU Type: 64-bit
Kernel Type: 64-bit
LPAR Info: 4 bgl-svr-biap
Memory Size: 4096 MB
Good Memory Size: 4096 MB
Note : Server is IBM P690.
1) System Lansdcape --> Two System Landsacpe ( Dev to Prod )
2) BW Version --> 3.5
3) SAP Basis --- > 6.4
4) No of Application servers currently having --> Only One Server
Can any body suggest me how to solve this.....
Thanks in Advance..
Kasi Chukka

Hi Kasi,
Your question is not very clear, from the looks of it, the load on your client's system will be doubling soon.
You need to look at the system stats on how the system is handling the current load, use transactions ST06, ST04 and ST02 to check if the DB hit ratios are as expected, the cpu idle time, the busy periods. Identify if there is large amounts of paging on the server(candidate for increase in real memory).
On AIX level, you will need to look at CPU / Memory usage.
On SAP Application server, you need to look at SAP Buffers.
On Oracle end, look at SGA stats, if it need to increase, the data growth that is current and estimated growth (DB02).
You will not get an exact answer to it, you will need to analyze the existing load and then estimate (guess). The hardware upgrade will also depend on what the client is willing to spend, its always a good practise to add 20% to what you have estimated as these figures are never accurate.
All the best.
Cheers,
Nisch

Using MaxL in batch script to get Essbase database size before proceeding

I have a batch script which dynamically generates some MaxL before passing it to ESSMSH. I would like to insert a command at the beginning of the MaxL script, to get and assess the size of the database before proceeding. If the database is empty I would like the script to quit. This is to prevent the script from exporting data and overwriting the previous export file if the database is empty.
The generated MaxL (modified) is currently as follows. What logic can I add to the MaxL script, to assess the database size and go to the "errorhandler" label if it is empty? Is this even possible?
login %USER% identified by %PASS% on %SERVER%;
iferror "errorhandler";
/* log file */
spool stdout on to '<directory>.log';
iferror "errorhandler";
/* error file */
spool stderr on to '<directory>.err';
iferror "errorhandler";
/* export data */
set timestamp on;
execute calculation %APP%.%DB%.C_Export;
iferror "errorhandler";
/* reset database */
alter database %APP%.%DB% reset data;
iferror "errorhandler";
/* import data */
import database %APP%.%DB% data from server data_file "<filename>.txt" on error abort;
iferror "errorhandler";
/* calculate database */
execute calculation default on %APP%.%DB%;
iferror "errorhandler";
/* error handler */
spool off;
define label "errorhandler";
logout;
exit;

Hi Stuart,
Yes I was aware of display database "app"."db"; however this will output a table rather than a specific value. And what logic can I then add to the MaxL script to assess the specific value of "Db Status" and go to the "errorhandler" label if it is empty?
It would seem this needs to be done via a VBScript, to loop through the file rows to find the value before proceeding accordingly. But I was hoping there might be a way to do this within MaxL.

How to check the file size before loading it to the context

Hello,
I have an application to upload a file and write it to the server using the FileUpload UI and IWDResource Interface.
I would like to limit the size of the file the user is uploading to, say, 2MB.
The problem is that the current API doesn't allow me to check the file size before I store it in IWDResource. The API available for IWDResource:
IWDResource resource = ...
InputStream stream = resource.read(false);
size = stream.available();
Is working on the file only AFTER storing it in the context and the server's memory. This way, if a user decides to upload 1GB file for example, he can easily crash the server.
I am already familiar with <a href="https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/00062266-3aa9-2910-d485-f1088c3a4d71">this</a> arcticle but it doesn't answer this question as well, all it does is calculating the file size only after storing it in the context.
Any ideas...?
Roy

Hi Ram,
Have you activated your Objects ?
You need to activate your objects in order to see them in RWB.
Thanks & Regards,
Varun Joshi

How to get the database size of several system

Hi
We've got a lot of database system on our landscape. I want to make a simple report to get the size the all our database on a weekly base.
I try to get a RZ20 value on it without succes.
Do you know a sql request that i could launch on all my database to get this information ? i did'nt find any V$^view with this information.
thanks for your help
florent

"The database size" can be
- the total size
- the filled size
- the filled size without undo/temp
You can use DBACOCKPIT to centrally manage multiple instance and check the sizes.
Markus

How to determine the database size corresponding to the nber records in DSO

Hi Colleagues,
I would like to determine the database size corresponding to my new BI project.
I know the number of records uploaded in the DSO from the source system for the intialization phase.
How can I deduct the database size / disk size corresponding to the number of record uploaded ?
Thanks,

Hi Ram,
I am with SAP BI Release SAPKW70019
I do not have the option Single Table analysis -
I have in DB02 or ST04 the following options.
*- Space*
-- space overview
->database
--overview
->users
--overview
--detailed analysis
-> tablespaces
--overview
--detailed analysis
-> segments
--overview
--Detailed analysis
--Detailed Analysis Aggregated
-> Additional Functions
--Collector Logs
--BW Analysis
Where should I go through ?
Thanks

Best Trategy to reduce the Database Size

Hi Everyone,
In our Client's Landscape SAP systems have been upgraded to newer versions whereas our client want
one copy of older Production systems (one copy to retain)
1) SAP R/3 4.6 C system (database size of this system is approx 2TB)
2) SAP BW 3.0 (database size of this system is approx 2TB)
Now CLient wants us to reduce the database size via re-organization because Archiving of IDOCs & Links we have already done
Client has recommended for :
1) Oracle Export/Import: Only Oracle DBA can do (ignore this one)
2) Database Reorganization : We have tried Reoragnization via BRtools but found very tedious 9 (ignore this one)
3) SAP Export/Import : Via this way we want to reduce the database size
Can anybody Tell us How much Free space do we require in order at OS level in order to store the Database Export
of Two Databases of size around 4TB & what would be the best strategy of reducing the Dabase size.
Via SAP Export/Import how much approx how much database size will be reduced
Thanks & Regards
Deepak Gosain

Hi,
>Can anybody Tell us How much Free space do we require in order at OS level in order to store the Database Export
>of Two Databases of size around 4TB & what would be the best strategy of reducing the Dabase size.
The only realistic way to know is to do a system copy of the production system on a testbed system and to test the Database Export.
If you really want to decrease the database size you will have to archive a lot more than the IDOC archiving object.
Regards,
Olivier

How to know the database size

can one tell how to find the database size?

Depends what you mean by database size and how you want the output to look?
Are you referring to the number of rows across all tables of a schema? The number of bytes used by the rows? The number of bytes used by the tablespaces? The number of bytes used by the datafiles? etc. etc. etc. So many options.
Be more clear in your requirements please.

How to reduce the database size based on MS SQL/Oracle?

Hi,
I had deleted severy clients via SCC5, but the database size is more and more bigger. Do you know how to reduce the database size.
my platform is: NT, MS SQL 2005
NT, Oracle 10.2
Best Regards,
Simon Shen

Hi Simon,
In the case of SQL you need to check how many space free you have in your datafiles and the based on that you need to Shrink them using DBCC SHRINKFILE command.
Find a couple of reference docs here,
http://www.intermedia.net/support/kb/default.asp?id=996
http://doc.ddart.net/mssql/sql70/dbcc_21.htm
Also i'm pretty sure that if your check the properties of the datafiles in MSSQL Enterprise Manager you get a "Shrink" option.
Regards
Juan
Please reward with points if helpful

Calculate the database size for a particular company code in SAP

Hi Experts,
We have 30 company codes in our FI production system. So to plan another new company code to be deployed into the system, we need to know exact data capacity (database) of the previous company code that we already deployed. Kindly let me know whether it possible to calculate the database size occupied for a particular company code in a SAP system.

>
Kalyan Kumar Bandlamudi wrote:
> Hi Experts,
>
> We have 30 company codes in our FI production system. So to plan another new company code to be deployed into the system, we need to know exact data capacity (database) of the previous company code that we already deployed. Kindly let me know whether it possible to calculate the database size occupied for a particular company code in a SAP system.
Its not possible to calculate data size based on company code.
By creating company code It will not occupy much space. Depends on your posting documents for particular company codes.
Thanks
Siva

How to get the Database size?

Hai Friends,
I have created a Z Table with 100 fields. i want to check the database size after uploading the data. How can i do this?. That is, after uploading the first entry i want to know the size and again i want to upload 5 more entries and to check the growth.
Where can i see this?. i have checked in DB02 but even after data upload i didnt see the size. kindly explain me the process.
Thanks..................

Hi,
In the Go to Menu then Check the Number of entries to track your current set of entries.
For DB Size check Technical Settings . Tab Logical Settings parameters the Data class and Size category can give you how much data the table can hold.
Thanks,
Anita

Rebuild Database did not reduce the database size

I just completed a rebuild database. The rebuild completed much quicker than anticipated and in the end the did not reduce in size.
This is my first rebuild and since original installation I have deleted a number of masters. From my understanding thumbnails and previews are not deleted when the master is deleted. In order to delete the thumbnails and previews the db must be rebuilt. Is this correct?
The db is over 31.1gb. The rebuild took approx 10 minutes and when completed the db size was still 31.1gb. There was a message during the rebuild that read "Recovering projects". I was expecting to see stats showing previews and thumbnails being generated in the activity window but don't see it. Has the db been rebuilt?
Thanks for any assistance.

Rebuilding the database is for disaster-recovery, not file maintenance. I certainly wouldn't do it unless something was fundamentally broken and the application didn't run.
"rebuilding" the database seems to do the following:
(1) remove the database file completely (not even to the trash, it destroys the database utterly)
(2) run through the plist files and reconstruct a brand-new database from them all
I checked this (on an empty library) using hard-links from the commandline, and step (1) above scared me sufficiently that I'd only rebuild the database as an absolute last resort.
Now, 31GB seems a lot for a database that only took 10 minutes to rebuild - are you sure you're not telling us the size of the library (to find the database size, right-click on the library and select view-package-contents, then open the 'Aperture.aplib' folder and find the size of the 'Library.apdb' file. That's the file you're changing when you 'rebuild database'.)
If you're telling us the size of the entire aperture library instead, then that size will be completely dominated by the master RAW files you've imported. I'd guess your library will be less than 10MB.
My understanding is that previews are deleted (since they're stored as separate files alongside the master image, if you look in the folder hierarchy), but thumbnails aren't. The thumbnails are aggregated together into one-file-per-project (presumably for speed of access), and I'd guess the space is reclaimed for future use, but the file doesn't get any smaller. That's a classic trade-off for speed-of-access, and users like us are normally very keen on things being fast
-=C=-

Estimating The Database Size before build up

Similar Messages

Maybe you are looking for