Free space requirement in Oracle database

In my oraganization SAP application running with oracle as database. now our database is 1300 GB and right now 90 GB space free in database (92 % used). since System implementation we kept this free space upto 90GB by adding datafiles every week. I am newbie and want to know that how much free space oracle requires for better performance. can I stop adding datafile .

user8694422 wrote:
But in SAP application,SAP has its own intelligency for database monitoring. we only add datafile in database for its space management.Now there is no space in our file system to add any of the datafile. In database 90GB out of 1300GB free. so what happen if database growth furher? database will get hang?I am not sure at all what SAP recommends but there isn't any thing that says that X amount of space should be left free. Oracle has come out with the alert mechanism that can help you to get the alert when the free space goes below the specified limit that you mention but more than the performance, it's the availability IMO that's going to be effected. For example, if you have run out of space, you won't become more slow or faster but you won't have space to do any further writing and that's going to cause the operations to be halted as long as you won't solve the issue by adding more space or by adding new files. So , saying that database would hang would be incorrect, not operational, yes!
Just my 2 cents
Aman....

Similar Messages

SGA free space information in Oracle 7.3.4

Please help me how to find SGA free space information in Oracle 7.3.4

Hi, I am getting following error while running below query
SQL> select * from v$sgastat order by pool,name;
select * from v$sgastat order by pool,name
ERROR at line 1:
ORA-00904: invalid column name

Free Report Writer for Oracle Database except Crystal Report and Data Vison

Dear All,
I want Free Report Writer for Oracle Database except Crystal Report and Data Vision software.
Wr are working on Linux and windows both platform.
Any one have direct link or website address for it ?
Regards,
Vipul Patel
Ahmedabad

Please check the following link -
http://www.google.co.in/search?client=firefox-a&rls=org.mozilla%3Aen-US%3Aofficial&channel=s&hl=en&q=open+source+report+writer+for+oracle&meta=&btnG=Google+Search
Regards.
Satyaki De.

How to get Operating System Space Info from Oracle database using SQL

Our oracle databases are installed on Unix operating system. Currently our DBA wrote a view to get space info of table spaces and He is requesting me to add Operating system level(file system) drive space info to the same report.
Can you please let me know the easiest way to get this information to sql table so that it can be used for reporting purposes?

You should be able to create a shell script with the OS commands to generate the information for the mount points that you want to access in Oracle, then read it in as an external table using the preprocessor feature of external tables:
http://download.oracle.com/otndocs/products/database/enterprise_edition/utilities/pdf/xtables_preproc11g_1009.pdf

V890 ran out of swap space cause for Oracle Database curruption.

We have Oracle running on V890 which was crashed due to low swap space and didn't find any hardware issue with the server.
Even after database crash 7gb is showing in use.
and there is absolute no use of swap space on this server
bash-3.00# uname -a
SunOS oracle-a01-00 5.10 Generic_127127-11 sun4u sparc SUNW,Sun-Fire-V890.
last pid: 18804; load avg: 0.05, 0.05, 0.04; up 16+18:16:30 08:19:11
95 processes: 94 sleeping, 1 on cpu
CPU states: 99.9% idle, 0.0% user, 0.1% kernel, 0.0% iowait, 0.0% swap
Memory: 32G phys mem, 25G free mem, 56G total swap, 56G free swap.
Can someone help us to find root cause for this issue???
Thanks
Ravi

Sorry this took so long. Here is part of the alert log. I am sorry it is so long. This sequence is repeated over and over again. I am only guessing, but does the fourth to last line suggest that one of the redo files is corrupted, again, because the machine ran out of space?
ORA-600 signalled during: alter database open...
Mon Sep 19 10:48:48 2005
Restarting dead background process QMN0
QMN0 started with pid=12
Mon Sep 19 10:54:51 2005
Restarting dead background process QMN0
QMN0 started with pid=12
Dump file d:\oracle\admin\orcld\bdump\alert_orcld.log
Mon Sep 19 10:42:49 2005
starting up 1 shared server(s) ...
starting up 1 dispatcher(s) for network address '(ADDRESS=(PARTIAL=YES)(PROTOCOL=TCP))'...
Mon Sep 19 10:42:51 2005
alter database mount exclusive
Mon Sep 19 10:42:56 2005
Successful mount of redo thread 1, with mount id 2931047851
Mon Sep 19 10:42:56 2005
Database mounted in Exclusive Mode.
Completed: alter database mount exclusive
Mon Sep 19 10:42:56 2005
alter database open
Mon Sep 19 10:42:57 2005
Beginning crash recovery of 1 threads
Mon Sep 19 10:42:57 2005
Started redo scan
Mon Sep 19 10:43:00 2005
Errors in file d:\oracle\admin\orcld\udump\orcld_ora_2652.trc:
ORA-00600: internal error code, arguments: [kcratr1_lostwrt], [], [], [], [], [], [], []

Hardware Requirement for Oracle Database

Hi, i need help, i wanna build new server with some requirement of total user who is connect, size of database n etc. Can u tell me how to calculate ram size, processor need and etc to build good server for my company need?
I remember Oracle before have some excel where we can fill the total user n other information n from that information the excel will tell u how many processor do u need, what ram size do u need n other else. Can someone help me find this excel??

user11257918 wrote:
There is 3360 user who wil connect concurrently to the database and there is 20 million customers in my master customer.
Is really don't have some formula or other things that help me to decide the number of processor and size of the ram?There are formulas. They are generally useless. Any formulas are only as good as the assumptions and, unless you know the assumptions you will not know whether the formulas are in any way valid.
Questions you need to answer are all around workload.
3360 concurrent users who only ask about sysdate will not load the system much. 3360 users who only ask 'what is the customer phone number' using only a properly indexed customer name field will likely not have a huge impact, although you may need to play with the index and the buffer cache for a bit. 3360 users who do concurrent 50 table joins with 20M row sort-merges will have a different impact on the system requirements. And 3360 users who perform updates and inserts using randomly assembled dynamic SQL with no bind variables at all will have a completely different impact again.
(Then again, user 3360 is known to ask some tough questions. But provide good answers as well. ;-) Have to say, I haven't seen much from 3360 lately. Different handle?)
The usual way to get a reasonable idea of the size is to prototype or benchmark. The best benchmark is a copy or simulation of your proposed environment. Skip this, and you will forever be 'right sizing' the app, no matter how much you calculate.
One way I've seen it successfully done is to do a small benchmark,use the SpecMARK tables (http://www.spec.org) to scale.

File Space required to Install BW3.5 Utilities/Tools in Oracle 10.2.0.3

Hi Gurus,
We are going to Install SAP BW 3.5 Utilities/Tools in Oracle 10.2.0.3 in Linux Redhat Advanced Server 3(Update 8) .
I have Couple of Questions.
1.Suggest me whether the OS and Database version are OK for SAP BW 3.5.
2.Suggest me the Space required in oracle Database in terms of GB.
This is Urgent.
Thanks & Regards
Mano

> Hi Gurus,
>
> We are going to Install SAP BW 3.5 Utilities/Tools in
> Oracle 10.2.0.3 in Linux Redhat Advanced Server
> 3(Update 8) .
Oracle 10.2.0.<b>3</b> is not supported!!!
Note 871096 - Oracle Database 10g: Patch sets/patches for 10.2.0
10.2.0.3 has NOT been released.
Oracle Release 10.2.0.3 has not been released for use in the SAP environment, and will not be released in future. This release is not supported by SAP. We recommend that you do not install this patch set. This patch set has not been tested intensively, and not all patches required to run your SAP system are available.
For a BW system it's difficult if not impossible to tell, how much space you need. It depends on much data you will load into the system, which kind of data this is etc.
Markus

File Space Required for Installing SAP BW 3.5 in Oracle 10.2.0.3

Hi Gurus,
We are going to Install SAP BW 3.5 Utilities/Tools in Oracle 10.2.0.3 in Linux Redhat Advanced Server 3(Update 8) .
I have Couple of Questions.
1.Suggest me whether the OS and Database version are OK for SAP BW 3.5.
2.Suggest me the Space required in oracle Database in terms of GB.
This is Urgent.
Thanks & Regards
Mano

> Hi Gurus,
>
> We are going to Install SAP BW 3.5 Utilities/Tools in
> Oracle 10.2.0.3 in Linux Redhat Advanced Server
> 3(Update 8) .
Oracle 10.2.0.3 is NOT supported - uninstall patchset 10.2.0.3 first.
> I have Couple of Questions.
>
> 1.Suggest me whether the OS and Database version are
> OK for SAP BW 3.5.
See above
> 2.Suggest me the Space required in oracle Database in
> terms of GB.
This depends on how much data you will load into the system.
Markus

Free version of oracle database.

Hi everbody,
Can anybody tell if there is a free version of Oracle database which can be used for training purpose.
This software is required for the hands on purpose for the associates.
Moreover, it would be kind enough of you to suggest that which is the most suitable version for installing on CentOS 6.3 64 bit ?
Thanks in advance for your assistance.

What is the purpose/content of the training ? For self-learning purposes, all of the database versions available at Oracle Downloads | Software | Oracle are "free". Currently, no Oracle database software is certified/supported on CentOS, although folks have managed to install it on this OS, with the assumption that they will have to troubleshoot any issues on their own. Again, for self-learning purposes, Oracle Linux is freely available at https://linux.oracle.com/pls/apex/f?p=101:3
HTH
Srini

Free space of mdf and ldf does not match with database free space

In SSMS i saw file size related properties and found below details for one database.Here values does not match with other properties. Here size of the mdf, ldf and total size matches with other values under each window. But Available free space of mdf and ldf
if added then it does not equal to Available free space shown in shrink database window and free space shown in database properties. This is true for any database. Why is it so? Please can anyone explain the logic behind this?
Under database properties:
Size: 91.31 MB
Space available:13.40 MB
Under database file properites:
mdf size:17 MB
ldf size:75 MB
under shrink database:
currently allocated size:91.31 MB
Available free space:13.40 MB
under shrink file-for data file:
currently allocated size:16.38 MB
Available free space:12.63 MB
under shrink file-for log file:
currently allocated size:74.94 MB
Available free space:55.62 MB

Hi,
Database properties and database shrink show the total (log+data) values. Others show the individual sizes, log and data separately.
I hope it helps.
Janos
There are 10 type of people. Those who understand binary and those who do not.
My Blog |
Hire Me
This does not answer my question. If you add allocated space of mdf and ldf it equals to database allocated size.But i am asking why this ldf and mdf free space together(when added 55.62+12.63 ) does not equal to database free space?

Doubt in considering temp tablespace's free space

Hi All,
Database: oracle 11.2
Operating System: AIX
I want to know how much free space available in my temp tablespace
I ran below scripts
select sum((bytes_free)/1024/1024/1024) GB from v$temp_space_header
+52.904296875+
select (tablespace_size)/1024/1024/1024 tablespace_size_in_gb,
+(allocated_space)/1024/1024/1024 allocated_space_in_gb,+
+(free_space)/1024/1024/1024 free_space_in_gb+
from dba_temp_free_space
tablespace_size_in_gb: 98.9990234375
allocated_space_in_gb: 46.0947265625
free_space_in_gb:151.81640625
So my doubt is which one from above two script gives actual free space information ?
Also in dba_temp_free_space view why free space size > tablespace size ?

v$temp_space_header shows you how big the temp tablespace has got since the database was restarted. It doesn't give you the current free/used space.
See the link for dba_temp_free_space, but I think it may be the way it reports free space which is why you're seeing it as more than the actual tablespace. As you can see form the description "space that is currently allocated and available for resuse" is calculated for both allocated space and free space.
http://docs.oracle.com/cd/B28359_01/server.111/b28320/statviews_5056.htm
>
ALLOCATED_SPACE = space that is currently allocated and used + space that is currently allocated and available for reuse
FREE_SPACE = space that is currently allocated and available for reuse + space that is currently unallocated>
I use the below script which I've plagiarised from somewhere ages ago to get the used/free temp space.
SELECT   A.tablespace_name tablespace, D.mb_total,
         SUM (A.used_blocks * D.block_size) / 1024 / 1024 mb_used,
         D.mb_total - SUM (A.used_blocks * D.block_size) / 1024 / 1024 mb_free
FROM     v$sort_segment A,
         SELECT   B.name, C.block_size, SUM (C.bytes) / 1024 / 1024 mb_total
         FROM     v$tablespace B, v$tempfile C
         WHERE    B.ts#= C.ts#
         GROUP BY B.name, C.block_size
         ) D
WHERE    A.tablespace_name = D.name
GROUP by A.tablespace_name, D.mb_total;

TimesTen Error802/6220: permanent data partition free space insufficient

Hi,
I am new to TimesTen and try to evaluate it as IMDB cache.
I am facing this error repeatedly. I have increased perm size from 6.25 GB to 10 GB.
After inserting about 460.000 rows I get the error again. Is it possible that 460.000 rows need 3.75 GB space?
In Oracle database these rows occupy about 200 MB space.
Any ideas for this situation?
Regards
Thomas

Hi Jim,
thank you for your answer. My drive has run full, so my TT DB crashed and I didn't get it started.
I think I will setup another DB to continue my tests.
By the way, I didn't mesure a big gap to the database in writing large amount of data...
I think I will chaange OS to Linux for the next test.
Kind regards
Thomas

Resource estimation/Sizing (i.e CPU and Memory) for Oracle database servers

Hi,
I have came across one of the requirement of Oracle database server sizing in terms of CPU and Memory requirement. Has anybody metalink notes or white paper to have basic estimation or calculation for resources (i.e CPU and RAM) on based of database size, number of concurrent connections/sessions and/or number of transactions.
I have searched lot on metalink but failed to have such, will be great help if anybody has idea on this. I'm damn sure it has to be, because to start with implementation of IT infrastructure one has to do estimation of resources aligned with IT budget.
Thanks in advance.
Mehul.

You could start the other way around, if you already have a server is it sufficient for the database you want to run on it? Is there sufficient memory? Is it solely a database server (not shared)? How fast are the disks - SAN/RAID/local disk? Does it have the networking capacity (100mbps, gigabit)? How many CPUs, will there be intensive SQL? How does Oracle licensing fit into it? What type of application that will run on the database - OLTP or OLAP?
If you don't know if there is sufficient memory/CPU then profile the application based on what everyone expects, again, start with OLTP or OLAP and work your way down to the types of queries/jobs that will be run, number of concurrent users and what performance you expect/require. For an OLAP application you may want the fastest disks possible, multiple CPUs and a large SGA and PGA (2-4GB PGA?), pay a little extra for parallel server and partitioning in license fees.
This is just the start of an investigation, then you can work out what fits into your budget.
Edited by: Stellios on Sep 26, 2008 4:53 PM

Difference between Oracle Database XE and APEX?

I searched, but couldn't seem to find if this question had already been answered.
I just picked up beginning oracle application express by wrox.
I came to oracle and downloaded Oracle Database XE then went to search for apex.
Installed Oracle Database XE ..signing is as system your options appear to be administration, object browser, sql, and utilities.
unlocked the HR sample user account and logged in..it has the same options above, but also application builder.
So, I guess my question is..
1. why does HR have application builder, but system does not?
2. do you need to download and install Apex or is apex already preinstalled using Oracle Database XE?
3. is Apex the same thing as application builder or are they completely different.
Thank you for you answers
Thomas

Oracle 11g XE is the FREE version of the Oracle database product.. APEX is the development product that LIVES in the Oracle database. So if you download the database, you get a copy of APEX to use...
System is NOT a usual user in the database, and in fact you should NOT be using it unless you need to change some settings in the database..
Thank you,
Tony Miller
Webster, TX
While it is true that technology waits for no man; stupidity will always stop to take on new passengers.
If this question is answered, please mark the thread as closed and assign points where earned..

Oracle Database Licensing Information 11g Release 2 (11.2) - E10594-08

Why does the above document not explicitly state that there are no explicit licensing requirements for Oracle Database client as long as the Database Server is licensed (or if this is wrong then a correct statement) ? This clarity is much needed from a licensing perspective !

Hi,
You are correct: There are no explicit licensing requirements for Oracle Database Client as long as the Database Server is licensed.
This issue has been forwarded to the Database Licensing Guide owners.
Thanks!
Beth Roeser

Free space requirement in Oracle database

Similar Messages

Maybe you are looking for