Reg: Cache settings

Hi,
We have a database of size 15KB only but has data from 1999 to 2008.The main issue is retrieval performance is too low.To increase the performance of the database retrieval can we increase the below cache size's or is there any other option?
Our database has the below settings:
Mode:Buffered I/O
Existing blocks: 1900000
Index cache:30000KB,Data cache:200000KB
Please suggest on this.

Hi,
Below is some tuning info which you will hopefully find of interest:
1 - The index cache setting should equal the size of your index files (ess000001.ind). Note that you you may have several essxxxx.ind files in your environment since a new file is created for every 2GB.
In the Database Properties screen, select the Storage tab and check the size of each .ind file. Remove the last 3 digits to obtain the value to enter in the Index Cache field (convert from KB to MB)
2 - The Data File Cache is only used with Direct I/O (No need to set it when using Buffered I/O). It should equal the data file size (ess000001.pag). Remember 1 .pag file is created for every 2GB.
3 - The data cache should be set to 0.125 times the values of the data file size (ess000001.pag). Again you may have several essxxxxx.pag files in your environment, 1 for every 2 GB.
You then need to restart the databases for the changes to take effect.
You may need to look at your isolation mode to improve performance maybe?
Committed Isolation: the calculation is stored to a temp directory before being written to the server. => Better data consistency
Uncommitted Isolation: Essbase releases a block after it is updated but does not commit blocks until the transaction is completed or until a specified limit is reached => Better performance and data concurrency
Hope this helps.
Seb
www.taysols.com.au

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Hello everyone.
We are running Hyperion Planning 11.1.2.1 and one of the dataforms we have set up is quite heavy (it includes several DynamicCalc members with considerable ammount of scripting) and it fails to load from time to time, just saying "Cannot open dataform X. Check logs" and such.
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Little by little I have managed to improve performance by modifying the above mentioned caches (it crashes less often), but still I guess it's nuts to infinitely increase caches to make sure it works.
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Data file cache setting: 61440 KB
Data cache setting: 51200 KB
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You haven't really provided enough information to be honest, for example are you running a 64bit system?
But that is rhetorical, as usual the first port of call is the DBAG. I don't see why a link should be posted, you must have access to it already if you're administering a production system. That will point out things like that the Data file cache setting is only relevant if Direct I/O is being used and that the index size should be at least as big as the file if memory allows.
Commit blocks....is interesting, personally I have set it to 0 in some projects and seen some improvement but as usual testing is the key.
However their is a performance tuning guide out there that you may find very useful:
https://blogs.oracle.com/pa/entry/epm_11_1_2_epm1
that focuses on the infrastructure a bit more. Bit complicated though and I would thoroughly recommend recording a set of benchmarks before applying any of those changes, and applying said changes one by one or you'll never know what is good and what is not so good.
Learn from the pain others have already endured ;-)
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Hi,
We are trying change the OLAP cache settings for the queries, as we know queries inherit the properties of InfoProvider so instead of changing for queries we need to change it for infoprovider. But we have 1000+ infoproviders, i want to know is there any way to change for all the infoproviders at one go"
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You capture the steps that you do in changing the infocube properties in BDC.
Create an upload file with all the cubes technical names and execute the BDC program in automated way.
You can take help from ABAP expert in your team.
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Hello,
I am coming up with the spreadhseet retreival error very frequently and get Essbase Error 1130203. I went through the Error interpretation and found that Data Cache might be causing it. Here are the details of cache settings on my
databases currently. Can somebody please help me understand if they are right or need some changes:
DataBase A:
Data File Cache setting (KB) 32768
Data cache setting (KB) 100000
Block Size: (B) 143880
Number of existing blocks: 7266
Page file size: 40034304
DataBase B:
Data File Cache setting (KB) 32768
Data cache setting (KB) 300000
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Number of existing blocks: 1912190
Page file size:2147475456--1
Page file size: 500703056
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Data File Cache setting (KB) 300000
Data cache setting (KB) 37500
Block Size: (B) 23160
Number of existing blocks: 26999863
Page File Size: 21 page file =21 * 2= 42 GB
If this might not be the issue then please let me know what might be causing it?
Thanks!
Edited by: user4958421 on Dec 15, 2009 10:43 AM

Hi,
1. For error no 1130203, here are the possible problems and solutions, straight from document.
Try any of the following suggestions to fix the problem. Once you fix the problem, check to see if the database is corrupt.
1. Check the physical memory on the server computer. In a Windows environment, 64 MB is the suggested minimum for one database. In a UNIX environment, 128 MB is the suggested minimum for one database. If the error keeps occuring, add more memory to the server computer.
2. If you are on a UNIX computer, check the user limit profile.
3. Check the block size of the database. If necessary, reduce the block size.
4. Check the data cache and data file cache setting. If necessary, decrease the data cache and data file cache sizes.
5. Make sure that the Analytic Services computer has enough resources. Consult the Analytic Services Installation Guide for a list of system requirements. If a resource-intensive application, such as a relational database, is running on the same computer, the resource-intensive application may be using the resources that Analytic Services needs
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http://hyperionconsultancy.com/

Cache Settings

Hello,
I am coming up with the spreadhseet retreival error very frequently and get Essbase Error 1130203. I went through the Error interpretation and found that Data Cache might be causing it. Here are the details of cache settings on my
databases currently. Can somebody please help me understand if they are right or need some changes:
DataBase A:
Data File Cache setting (KB) 32768
Data cache setting (KB) 100000
Block Size: (B) 143880
Number of existing blocks: 7266
Page file size: 40034304
DataBase B:
Data File Cache setting (KB) 32768
Data cache setting (KB) 300000
Block Size: (B) 91560
Number of existing blocks: 1912190
Page file size:2147475456--1
Page file size: 500703056
DataBase C:
Data File Cache setting (KB) 300000
Data cache setting (KB) 37500
Block Size: (B) 23160
Number of existing blocks: 26999863
Page File Size: 21 page file =21 * 2= 42 GB
If this might not be the issue then please let me know what might be causing it?
Thanks!

You have posted the same question on the essbase forum > Data Cache Settings
You are more likely to get more responses on the essbase forum to this question.
From the docs
Error - 1130203
Essbase is unable to allocate memory.
Possible solutions
Try any of these suggestions to fix the problem. After you fix the problem, determine whether the database is corrupt (see Checking for Database Corruption).
Check the physical memory on the server computer. In a Windows environment, 64 MB is the suggested minimum for one database. In a UNIX environment, 128 MB is the suggested minimum for one database. If the error keeps occurring, add more memory to the server computer.
If you are on a UNIX computer, check the user limit profile (see Checking the User Limit Profile).
Check the block size of the database. If necessary, reduce the block size.
Check the data cache and data file cache setting. If necessary, decrease the data cache and data file cache sizes.
Ensure that the Essbase computer has enough resources. Consult the Oracle Hyperion Enterprise Performance Management System Installation Start Here for system requirements. If a resource-intensive application, such as a relational database, is running on the same computer, the resource-intensive application may be using the resources that Essbase needs.
Cheers
John
http://john-goodwin.blogspot.com/

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Hi experts,
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tried searching the forum but cud nt find a solution

Hi Dave,
Good question,
1) Calculations performance depends on your cache ettings.
http://docs.oracle.com/cd/E17236_01/epm.1112/esb_tech_ref/frameset.htm?maxl_export.html
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Thanks.

Reg: Cache settings

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