Logical partition for CO-PA

Hello,
I need to split the CO-PA data into two info-cubes (logical partitioning by Record Type). I know that i can create few DataSources for COPA. Should i use the same DataSource or should i make 2 DataSources?
Please Advice,
David
Message was edited by: David Cohn

What datasources are you using now?
Cheers!
/smw

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Using one logical partition for / and /boot

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on my pc i have windows and a linux. i want to install Arch and have all of them. there are some windows (ntfs) partition on my hard disk, a swap area and 2 linux partition that one of them is used by ubuntu (/boot, / , /home .....of ubuntu are in one partition which is ext4). is it possible to use the same method for Arch? i mean , i do not want to have a seperate /boot partition for Arch. is it possible? if yes, what is the recommended file system for that partition? can i use ext4? (some distroes do not support booting from an ext4.)
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DB6 - Supports the logical partitioning for SAP BW

Hi All,
Please can someone help me to give the information .
We are using DB6 on top of that we have SAP BW 7.0. Is the logical partitioniong supported with this DataBase.
Thanks
kapse

Hi Kapse,
By using partitioning you can split up the whole dataset for an InfoCube into several, smaller, physically independent and redundancy-free units. In SAP BW you can achieve the same as
In the InfoCube maintenance choose Extras ® Partitioning, and specify the value range. Where necessary, limit the maximum number of partitions. Note: You can only change the value range when the InfoCube does not contain any data.
Regards,
Deepak Kori

Which logical partition for which physical one ??

Dears,
I have a linux machine and 4 harddrives on RAID 5.
Now when i run $ df -k I have:
Filesystem 1K-blocks Used Available Use% Mounted on
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You have new mail in /var/spool/mail/root
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Firas

You are welcome.
If you need more details about LVM, you may have a look at Chapter 7 and 8 of Red Hat Enterprise Linux 4: System Administration Guide
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Impact of logical partitioning on BIA

We are on BI release 701, SP 5. We are planning to create logical partition for some of the infocubes in our system. These cubes are already BIA enabled, so will creation of logical indexes have any impact on the BIA or improve the BIA rollup runtime

Hi Leonel,
Logical partitioning will have impact on BIA in terms of performance .
Current cube is already indexed on BIA. Now if you divide current cube data into different cubes and create multiprovider on it then each cube will have its own F table index on BIA.
you have to put new cubes to BIA and Execute Initial filling step on BIA and place rollups for respective cubes.
Point to be noted :
As Data will be deleted from Current cube and move to other cubes , Indexes will not get deleted
from corresponding F table indexes in BIA . There will be indexes for records which are not present in cube. Thus it is always a good practice to flush BIA which will remove all the indexes from BIA for current cube and create new Indexes on BIA.
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Logical Partitioning -How much %age improvement.

Hello All,
I want to know if we use Logical partitioning for cube then how much %age performance will be improve and how about its depends on loaded data into the cube.
Q1:Logical partitioning of cubes - How much % of performance can be expected.
Q2:How much % of performance improvement can be expected if say no. of records in cube is half the current no. of records.
Thanks in advance,
Bandana.

Bandana,
I would say that the question is incorrect ..( Carl Sagan..? )
First - the percentage improvement depends on the amount of data - if my cube has 100 records and I do a logical partition I will not see any improvement - but then ramp up the numbers to 1 billion records - I see very significant improvements..
Lets say your cube has data for 2010 and 2011 and you want to logically separate out the data . Typically logical partitions would mean separating out the data into separate cubes by year / country etc - any partition that is not using the default partitioning of 0FISCPER / 0CALMONTH etc...
If this is not what you are looking at or if I am wrong - please correct me here...
Now if you split your cube into two parts - one cube for 2010 and one for 2011 - the time required to access the data in the 2010 cube decreases - because it has a cube of its own - this is the benefit you get in terms of data access times - but then this is not going to be a 100% improvement because you have a cube for each year... it depends to a large extent on the query also - but in almost all cases you will have a performance benefit.
I am not able to understand your second question.

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Thanks all. I was able to find the solution for my scenario..

How can I limit which hard drive partitions Logic looks for samples in?

Hello.
I have my internal hard drive set up into two partitions, one for running Logic 8 on Snow Leopard and the other for running Logic X on Mavericks. I wanted to keep these two worlds separate to prevent any kind of incidental changes to one environment from affecting the other for the sake of pristine preservation. In short, all my samples are located on each of the two partitions.
Is there a smart way to prevent Logic from scanning the other OS partition for samples or other system files? I want to keep these two worlds separate as a control so neither end up breaking the other. I am cautious about setting up permissions to lock myself out of the other partition while I'm in either of them. I'm afraid that I somehow wouldn't be able to boot to the other one (I've had some alarming experiences with drive permissions in the past).
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Why logical partition is a must for voting disk and OCR

Hi Guys,
I just started handling jobs for RAC installation, I have a simple question regarding the setup.
Why does logical partition have to be used for voting disk and OCR?
I tried partition the disk that were provisioned for voting disk and OCR with primary partition but when OUI is trying to recognize the disk, it cannot find the disk that has been partitioned with primary partition.
Thank you,
Adhika

Hello Adhika,
I found it on this doc http://download.oracle.com/docs/cd/B28359_01/install.111/b28250/storage.htm
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http://www.mrdba.com.br/mufalani

Any real reason for logical partitioning over physical?

Hi!
I have seen a number of scenarios where SAP BI (assuming BI 7.0 for the rest of the discussion), running in high volume scenarios, have been cluttered by a lot of logically partitioned cubes joined by multi providers....
Obviously the disadvantage of using logical partitions is that it increases maintenance efforts: you need a new update rule for each logical partition (cube) , then you need to manually add/delte cubes from the multiprovider, filtering data in the update rules to reach the correct cube based on time characteristic etc etc...
I have seen one clear advantage which is the parallelization of queries run against a multiprovider - assuming you wan't to all underlying cubes ... but are there any other advantages which overcome the mainenance overhead?
For me it feels like using physical database partitions in the same cube would be the correct decision in 90% of the cases. It seems to me that the underlying RDBMS should be able to handle itself to:
1) Parallellize a query over several physical partitions if needed.
2) Be smart enough to only query the needed partition if the query is restricted based on the partitioning characteristic.
Please correct me anyone? - When is logical partitions really motivated?
Best regards,
Christian
Edited by: Christian on May 15, 2008 3:55 PM

Hi,
This is a great question. Generally it is very difficult to understand the real motivation for the physical partioning - multiple cubes. You are right, it definitely increases the maintenance overhead. And you have already pointed out both the advantages and disadvantages.
Physical Partitioning is more useful where we have huge amounts of data. Imagine a cube with 3 or 4 GB of data - which are not usual - but possible. The Table Partioning is useful with small infocubes, less than 1 GB. With bigger Infocubes, Table level partitioning may not provide the required level of performance. If we have too many small partitions, that would also reduce the perfomance. If we have too few partitions, the query performance will not be as much as we want. In this scenario, we can use Physical partitioning (Multiple Cubes) combined with Table Level Partitioning to achieve the required performance levels. On top, we can even think of using Aggregates for further betterment of the performance.
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rgds
naga

Finding whole mapping from database file - filesystems - logical volume manager - logical partitions

Hello,
Trying to make reverse engeneering of database files and their physical carriers on logical partitions ( fdisk ).
And not able to make whole path from filesystem down to partitions with intermediate logical volumes.
1. select from dba_data_files ...
2. df -k
to get the listing of filesystems
3. vgdisplay
4. lvdisplay
5. cat /proc/partitions
6. fdisk /dev/sda -l
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Problem I have is that not able to determine which partitions are consisten in logical volumes. And then which logical volumens are consisted in filesystem.
Thank you for hint or direction.

Hello Wadhah,
Before start the discussion let me explain I am newcommer to Oracle Linux. My genetic with dba experience of Oracle is from IBM UNIX ( AIX 6.1 ) and Oracle 11gr2.
First task is to get the complete picture of one database on Oracle Linux for future maintenance tasks and make database more flexible and
preparing for more intense work:
-adding datafiles,
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- separating auditing log files from $ORACLE_BASE to own filesystem
- separating diag directory on separated file system ( logging, tracing )
- adding/enlarging TEMP ts
- adding/enlarging undo
- enlarging redo for higher transaction rate ( to reduce number of switched per time perceived in alert_SID.log )
- adding online redo and control files mirrors
So in this context try to inspect content of the disk space from the highest logical level in V$, DBA views down to fdisk partitions.
The idea was to go in these steps:
1. select paths of present online redo groups, datafiles, controlfiles, temp, undo
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2. For the paths got from the step 1
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3. For all used logical volumes locate the logical partitions and their disks /dev/sda, /dev/sdb, ...

How to add a partition for Windows XP

Hi, I recently received my T410 with Windows 7 pre-installed. I would like it to be a dual-boot system for Windows 7 and XP.
I had hoped to be able to create a new primary partition after shrinking the Win7 partition. However, it looks like my system already came with three primary partitions. They are
Volume, Layout, Type, File System, Status
Lenovo_Recovery (Q, Simple, Basic, NTFS, Healthy (Primary Partition)
SYSTEM_DRV, Simple, Basic, NTFS, Healthy (System, Active, Primary Partition)
Windows7_OS (C, Simple, Basic, NTFS, Healthy (Boot, Page File, Crash Dump, Primary Partition)
1. Does SYSTEM_DRV need to be a primary partition?
2. Since it looks like SYSTEM_DRV is just the system drivers, is it possible for me to either (a) change that partition to a logical drive partition or (b) move those files to a folder in the Windows7_OS partition? Then I am assuming that will free up a primary partition for XP and I can carry on with installing XP on that partition.
3. If yes to question 2, what steps do I need to take to do either (a) or (b)?
The steps I am currently following for making it a dual-boot system are here: http://www.sevenforums.com/tutorials/8057-dual-boot-installation-windows-7-xp.html, and http://www.sevenforums.com/installation-setup/67236-problems-dual-boot-win-7-win-xp.html. They don't address they case where the computer already has three primary partitions, unfortunately; and I figure this is more of a Lenovo question rather than a question for that forum.
Thanks for your help.

not to put you off on what you're about to do, but depending on what version of 7 you have, pro and ultimate have an option to install a full copy of xp pro sp3 in a virtual machine within windows 7. it will integrate windows 7 files into it so you can access them. and it it actually is a full version of xp. you allocate system memory for it to run and you can either have it set to shut down which will free up the resources or hibernate which won't. although it loads much faster from hibernate.
before you do anything, i would burn restore discs in case something gets screwed. make sure you have restore points set.
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How to create extra partitions for windows 7 after installing boot camp

hello
i am pretty new at imac so bare with me and i really need help.
IMAC
OS X version 10.9.5 ( i think its os X mavericks ??)
iMac 21. inch , Late 2013
iMac model identifier iMac 14,1
i installed boot camp windows 7 and it works perfectly, after i tried to create two partition using disk utility for windows 7 (ms-dos) format because i really want to separate my files on other partition instead of everything on Boot Camp drive. after i restart choosing windows OS i cannot go back to windows 7.
i hold option on the keyboard but does not show window 7 so i went back to Apple ox s , found my boot camp hd on the desktop with files in it. checked boot camp assistance showing
" The startup disk must be formatted as a single Mac OS Extended (Journaled) volume or already partitioned by Boot Camp Assistant for installing Windows. "
i read alot of article about but i don't seem to understand much about
i understand alot of people created these kind of topics
please if someone can help me solve this problem again
i only want an apple os , boot camp for windows 7 and 2 extra partitions for storage , my hard drive is 1TB
thank you

Last login: Mon Feb 16 16:11:46 on console
YLFs-iMac:~ ylf$ diskutil list
/dev/disk0
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *1.0 TB     disk0
   1:                        EFI EFI                     209.7 MB   disk0s1
   2:                  Apple_HFS Macintosh HD            999.3 GB   disk0s2
   3:                 Apple_Boot Recovery HD             650.0 MB   disk0s4
/dev/disk1
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:     FDisk_partition_scheme                        *8.0 GB     disk1
   1:                 DOS_FAT_32 WININSTALL              8.0 GB     disk1s1
YLFs-iMac:~ ylf$ diskutil cs list
No CoreStorage logical volume groups found
YLFs-iMac:~ ylf$ sudo gpt -vv -r show /dev/disk0
Password:
gpt show: /dev/disk0: mediasize=1000204886016; sectorsize=512; blocks=1953525168
gpt show: /dev/disk0: PMBR at sector 0
gpt show: /dev/disk0: Pri GPT at sector 1
gpt show: /dev/disk0: Sec GPT at sector 1953525167
       start        size index contents
           0           1         PMBR
           1           1         Pri GPT header
           2          32         Pri GPT table
          34           6
          40      409600      1 GPT part - C12A7328-F81F-11D2-BA4B-00A0C93EC93B
      409640 1951845952      2 GPT part - 48465300-0000-11AA-AA11-00306543ECAC
1952255592     1269536      3 GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC
1953525128           7
1953525135          32         Sec GPT table
1953525167           1         Sec GPT header
YLFs-iMac:~ ylf$
Also i do not have boot camp installed yet because like i said, it messed up my boot camp after i created the partition thats why i removed boot camp, right now i only have APPLE OS

Use of Logical Partition in a Oracle Table...

What is the use of Logical Partition in a Oracle Table as Target. Techincal Manual does not say any significance.
My question is:
If the Table has no partitions and if we add Logical Partitions using Data Service, what purpose will it serve?
We are planning to load 30 Million records a day into a Oracle Table. As of now the Target table has no partition and we are planning to have that soon. Is there a better way to load the data into Target Table, using Partition, Bulk Loading(API), Degree of Parallelism, etc., We have not dealt data of that volume, inputs are highly appreciated.
Regards.
Santosh.

Initial Value:
Indicator that NOT NULL is forced for this field
Use
Select this flag if a field to be inserted in the database is to be filled with initial values. The initial value used depends on the data type of the field.
Please note that fields in the database for which the this flag is not set can also be filled with initial values.
When you create a table, all fields of the table can be defined as NOT NULL and filled with an initial value. The same applies when converting the table. Only when new fields are added or inserted, are these filled with initial values. An exception is key fields. These are always filled automatically with initial values.
Restrictions and notes:
The initial value cannot be set for fields of data types LCHR, LRAW, and RAW. If the field length is greater than 32, the initial flag cannot be set for fields of data type NUMC.
If a new field is inserted in the table and the initial flag is set, the complete table is scanned on activation and an UPDATE is made to the new field. This can be very time-consuming.
If the initial flag is set for an included structure, this means that the attributes from the structure are transferred. That is, exactly those fields which are marked as initial in the definition have this attribute in the table as well.
hope it helps,
Saipriya

Logical Partition of infocube

We have a cube logical partitioned by sales org. We now would like to add additional sales org's to the list. Is this possible?? Currently with data in the cube it is blocked. Does anyone know steps to re-logical partition a cube?? With/or without data re-loading? Any options at the database level (oracle)?
Thanks!!

Hi,
Yes that is correct you cant do cube partitioning with existing data.
Another important thing is based upon selection conditions only you can do the partitioning. There are two selection conditions they are as follows.
1. 0CALMONTH
2. 0FISCAL YEAR PERIOD
if these two time characteristics were not used in the cube means you can't partition the cube.
STEPS TO PARTITION THE INFOCUBE:
for example if you have Sales and Distribution cube you want to do logical partitioning on that cube.
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then you should create update rules for that cube.
select the first cube right click on it choose the option generate export datasource.
the system will finish generation process.
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in that we have DATAMART select it choose refresh icon.
you get the infosource with datasource assignment.
select the data source right click on it choose create infopackage.
it will take you to the maintain infopackage screen.
here you need to select the datatarget tab and select the target into which the data need to be updated.
schedule it and start.
now manage the data target and check the data has been updated or not.
after doing all this process go to infoprovider select the first cube delete the data.
now depending upon your requirement do the partitioning.
double click on the cube it will take you to the edit infocube screen from the menu bar select extras it will display the partitioning option select it.
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Hope this will help you
Thanks and Regards
Vara Prasad

Logical partition for CO-PA

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