HANA HA best practice

Dear Experts,
Hope your all doing great. I would like to seek your expertise on HANA high availability best practice. We have been deciding to use TDI for BW on HANA. The next big question for us is how make it available atleast 99.99%.
I was going through multiple documents, SDN forums, etc..but would like to understand what kind of setup done in real time Virtual IP Vs System Replication Vs Storage Replication.
Could you please provide your expertise method you followed for HANA HA and what are the pros, cons and challenges that you have faced or facing.
Thanks
Yoga

./imsimta version
Sun Java(tm) System Messaging Server 7.3-11.01 64bit (built Sep 1 2009)
libimta.so 7.3-11.01 64bit (built 19:54:45, Sep 1 2009)
Using /opt/sun/comms/messaging64/config/imta.cnf (not compiled)
SunOS szuml014aha 5.10 IDR142154-02 sun4v sparc SUNW,T5240
sun cluster 3.2. And we are following the zfs doc. I haven't actually restarted the box yet, just doing configs and testing still and noted that.
szuml014aha# ./start-msg
Warning: a HA configuration is detected on your system,
use the HA start command to properly start the messaging server.
szuml014aha# ./start-msg ha
Connecting to watcher ...
Warning: Cannot connect to watcher
Critical: FATAL ERROR: shutting down now
job_controller server is not running
dispatcher server is not running
sched server is not running
imap server is not running
purge server is not running
store server is not running
szuml014aha# ./start-msg watcher
Connecting to watcher ...
Launching watcher ... 11526
szuml014aha# ./start-msg ha
Connecting to watcher ...
Starting store server .... 11536
Checking store server status ...... ready
Starting purge server .... 11537
Starting imap server .... 11538
Starting sched server ... 11540
Starting dispatcher server .... 11543
Starting job_controller server .... 11549
Also I read in the zfs / msg doc about the recommendations:
http://wikis.sun.com/display/CommSuite/Best+Practices+for+Oracle+Communications+Messaging+Exchange+Server
If I split the messages and indices, will there be any issues should I need to imsbackup and imsrestore the messages to a different environment without the indices and messages split?
-Ray
Edited by: Ray_Cormier on Jul 22, 2010 7:27 PM

Similar Messages

SAP HANA Security - Best Practice for Access to Schemas??

Hi,
Currently we don'y have a defined Security model in HANA Studio.Neither there is no defined duties of a BASIS / Security / Developers.
I want to understand what best practices are followed at other customers for defining security for Schema.
1. Who should be creating the schema for Developers / Modelers?
2. Should we use our own ID's to create/maintain these Schema or a Generic ID?
Right now, when developers log in to Studio, by default they are assigned to their own schema (User ID) and they create objects under that.
We(Security team), face issues when other developers need access to schema of another user as they want to develop objects under schema of different user
Also, who should be owning the "SYSTEM" user ID and what steps needs to be done whenever a new schema is created.
Thanks for the help in advance.

Hi,
I created a project (JDeveloper) with local xsd-files and tried to delete and recreate them in the structure pane with references to a version on the application server. After reopening the project I deployed it successfully to the bpel server. The process is working fine, but in the structure pane there is no information about any of the xsds anymore and the payload in the variables there is an exception (problem building schema).
How does bpel know where to look for the xsd-files and how does the mapping still work?
This cannot be the way to do it correctly. Do I have a chance to rework an existing project or do I have to rebuild it from scratch in order to have all the references right?
Thanks for any clue.
Bette

HANA Security - Best Practices for Schema??

Hi,
Currently we don'y have a defined Security model in HANA Studio.Neither there is no defined duties of a BASIS / Security / Developers.
I want to understand what best practices are followed at other customers for defining security for Schema.
1. Who should be creating the schema for Developers / Modelers?
2. Should we use our own ID's to create/maintain these Schema or a Generic ID?
Right now, when developers log in to Studio, by default they are assigned to their own schema (User ID) and they create objects under that.
We(Security team), face issues when other developers need access to schema of another user as they want to develop objects under schema of different user
Also, who should be owning the "SYSTEM" user ID and what steps needs to be done whenever a new schema is created.
Thanks for the help in advance.

>So, if we follow this approach, who should be creating the schema as design time?
Not sure what you mean by that. We call this design time because you are creating an artifact in the repository and the catalog object doesn't get created until you activate that design time object.
> Security Administrator or Developer/Modeler?
Doesn't really matter. Depends upon your process. However I would say most of the time the developer creates the schema. The developer doesn't immediately get access to the new schema. He/She must create a role and that role has to be granted to them before they can see the objects in the new schema.
>Also, for our current scenario, where developers are doing changes in their own schema, what should be done as a Security Administrator to assign access to a user schema to other developers?
They shouldn't be creating objects in their user schema. That user schema is for internal usage - like the creation of temporary objects. It shouldn't be used for any development.

Best practices for PAL and HANA Modeling

Hi all
I wanted to get your opinion on working with Predictive Analysis Library and SAP HANA modeling- analytical views, calculated views, etc.
If I have transactional data modelled into analytical view and now wish to run a predictive function on some of it's columns, what are you guys' suggestions on how to best go about building a PAL model within HANA?
Do I run the PAL procedure every time the table is updated? How do I decide on the frequency of the pal procedure? Any tips?
And do I use triggers for automated procedure runs?
What are some of the best practices?
If this has been brought up before, please point me to the right discussion.
Thanks!

Hi all
I wanted to get your opinion on working with Predictive Analysis Library and SAP HANA modeling- analytical views, calculated views, etc.
If I have transactional data modelled into analytical view and now wish to run a predictive function on some of it's columns, what are you guys' suggestions on how to best go about building a PAL model within HANA?
Do I run the PAL procedure every time the table is updated? How do I decide on the frequency of the pal procedure? Any tips?
And do I use triggers for automated procedure runs?
What are some of the best practices?
If this has been brought up before, please point me to the right discussion.
Thanks!

SAP Best Practices for Data Migration :repositories only on MS SQL Server ?

Hi,
I'm implementing the "SAP Best Practices for Data Migration" (see https://websmp109.sap-ag.de/bp-datamigration).
As part of the installation you have to install MS SQL Server Express Edition. The installation guide contains detailed steps to do this. All repositories for Data Services should be running on SQL Server, according to the installation guide.
The customer I'm working for now does not want to use SQL Server, but DB2, as company standard.
So I use DB2 for the local and profiler repositories.
I notice however that the web application http://localhost:8080/MigrationServices does not support DB2.The only database type you can select in the configuration area is MS SQL Server.
Is this a limitation, a by design ?

Hans,
The current release of SAP Best Practices for Data Migration, v1.32, supports only MS SQL Server. The intent when developing the DM content was to quickly set up a temporary, standardized data migration environment, using tools that are available to everyone. SQL Server Express was chosen to host the repositories, because it is easy to set up and can be downloaded for free. Sone users have successfully deployed the content on Oracle XE, but as you have found, the MigrationServices web application works only with SQL Server.
The next release, including the web app, will support SQL Server and Oracle, but not DB2.
Paul

Best practices for data migration

Hi All,
This thread is useful for those who can use their opportunity to share the ideas and knowledge for making better and best use of data migration using Business Objects Data Services.

Hans,
The current release of SAP Best Practices for Data Migration, v1.32, supports only MS SQL Server. The intent when developing the DM content was to quickly set up a temporary, standardized data migration environment, using tools that are available to everyone. SQL Server Express was chosen to host the repositories, because it is easy to set up and can be downloaded for free. Sone users have successfully deployed the content on Oracle XE, but as you have found, the MigrationServices web application works only with SQL Server.
The next release, including the web app, will support SQL Server and Oracle, but not DB2.
Paul

Mapping Content Best Practice

Anyone got suggestions on best practice for mapping contents...
a) create a lot of mappings - almost 1 for each table, dim, etc;
b) put many items into logically grouped mappings (e.g. staging static data extract, staging fact extract, etc)
c) somewhere in between - most staging stuff gets chucked together, major dimension/fact refresh has its own mapping, possibly put many related smaller dims (status, etc) in one mapping, etc..
I assume the considerations are parallel execution, monitoring, maintenance/clarity, simplifying process flows, etc.
I suppose I'd go for c), but if anyone can suggest things to avoid that'd be good!

Hi Chewy,
Mapping composition is not an exact science, as you state yourself.
The problem also extends to workflows and workflow subprocess division.
I've made some core rules for myself, that may work for others too:
1) If I want to be able to reload a target in case of problems, it should be in a separate mapping.
2) Generally, each target file has its own mapping. If several disconnected flows have the same target, I put them in the same mapping.
3) If I split a single source into multiple targets, I generally use a single mapping for that
4) If flows are complex (have many operators), I never put two or more together. If your 3600x4800px monitor can't display all of your mapping, you're on wrong track.
5) If I want to sequence simple flows and don't care about 1) or which one runs first (10gR1 caveat), I put them into the same mapping. Eg. when the source cannot handle concurrent queries well.
When it comes to workflows, things get more complicated.
In my current project, most source data moves through three modules: staging, ods (relational), and data mart (star schema). I have two requirements for packaging mappings into workflow subprocesses:
1) There should be a subprocess per source module that transfers all data from the source to the staging area
2) Each target (dim or cube) in the data mart should have a silo-type subprocess that handles the data from staging through ods into the data mart. Rule 1) from mappings applies here, as well.
To do this efficiently, you should have a PL/SQL function that checks eg. if the source loaded successfully into staging before commencing with target loading.
Regards, Hans Henrik

Logical level in Fact tables - best practice

Hi all,
I am currently working on a complex OBIEE project/solution where I am going straight to the production tables, so the fact (and dimension) tables are pretty complex since I am using more sources in the logical tables to increase performance. Anyway, what I am many times struggling with is the Logical Levels (in Content tab) where the level of each dimension is to be set. In a star schema (one-to-many) this is pretty straight forward and easy to set up, but when the Business Model (and physical model) gets more complex I sometimes struggle with the aggregates - to get them work/appear with different dimensions. (Using the menu "More" - "Get levels" does not allways give the best solution......far from). I have some combinations of left- and right outer join as well, making it even more complicated for the BI server.
For instance - I have about 10-12 different dimensions - should all of them allways be connected to each fact table? Either on Detail or Total level. I can see the use of the logical levels when using aggregate fact tables (on quarter, month etc.), but is it better just to skip the logical level setup when no aggregate tables are used? Sometimes it seems like that is the easiest approach...
Does anyone have a best practice concerning this issue? I have googled for this but I haven't found anything good yet. Any ideas/articles are highly appreciated.

Hi User,
For instance - I have about 10-12 different dimensions - should all of them always be connected to each fact table? Either on Detail or Total level.It not necessary to connect to all dimensions completely based on the report that you are creating ,but as a best practice we should maintain all at Detail level only,when you are mentioning any join conditions in physical layer
for example for the sales table if u want to report at ProductDimension.ProductnameLevel then u should use detail level else total level(at Product,employee level)
Get Levels. (Available only for fact tables) Changes aggregation content. If joins do not exist between fact table sources and dimension table sources (for example, if the same physical table is in both sources), the aggregation content determined by the administration tool will not include the aggregation content of this dimension.
Source admin guide(get level definition)
thanks,
Saichand.v

Best practices for setting up users on a small office network?

Hello,
I am setting up a small office and am wondering what the best practices/steps are to setup/manage the admin, user logins and sharing privileges for the below setup:
Users: 5 users on new iMacs (x3) and upgraded G4s (x2)
Video Editing Suite: Want to connect a new iMac and a Mac Pro, on an open login (multiple users)
All machines are to be able to connect to the network, peripherals and external hard drive. Also, I would like to setup drop boxes as well to easily share files between the computers (I was thinking of using the external harddrive for this).
Thank you,

Hi,
Thanks for your posting.
When you install AD DS in the hub or staging site, disconnect the installed domain controller, and then ship the computer to the remote site, you are disconnecting a viable domain controller from the replication topology.
For more and detail information, please refer to:
Best Practices for Adding Domain Controllers in Remote Sites
http://technet.microsoft.com/en-us/library/cc794962(v=ws.10).aspx
Regards.
Vivian Wang

Add fields in transformations in BI 7 (best practice)?

Hi Experts,
I have a question regarding transformation of data in BI 7.0.
Task:
Add new fields in a second level DSO, based on some manipulation of first level DSO data. In 3.5 we would have used a start routine to manipulate and append the new fields to the structure.
Possible solutions:
1) Add the new fields to first level DSO as well (empty)
- Pro: Simple, easy to understand
- Con: Disc space consuming, performance degrading when writing to first level DSO
2) Use routines in the field mapping
- Pro: Simple
- Con: Hard to performance optimize (we could of course fill an internal table in the start routine and then read from this to get some performance optimization, but the solution would be more complex).
3) Update the fields in the End routine
- Pro: Simple, easy to understand, can be performance optimized
- Con: We need to ensure that the data we need also exists (i.e. if we have one field in DSO 1 that we only use to calculate a field in DSO 2, this would also have to be mapped to DSO 2 in order to exist in the routine).
Does anybody know what is best practice is? Or do you have any experience regarding what you see as the best solution?
Thank you in advance,
Mikael

Hi Mikael.
I like the 3rd option and have used this many many times. In answer to your question:-
Update the fields in the End routine
- Pro: Simple, easy to understand, can be performance optimized - Yes have read and tested this that it works faster. A OSS consulting note is out there indicating the speed of the end routine.
- Con: We need to ensure that the data we need also exists (i.e. if we have one field in DSO 1 that we only use to calculate a field in DSO 2, this would also have to be mapped to DSO 2 in order to exist in the routine). - Yes but by using the result package, the manipulation can be done easily.
Hope it helps.
Thanks,
Pom

Temp Tables - Best Practice

Hello,
I have a customer who uses temp tables all over their application.
This customer is a novice and the app has its roots in VB6. We are converting it to .net
I would really like to know the best practice for using temp tables.
I have seen code like this in the app.
CR2.Database.Tables.Item(1).Location = "tempdb.dbo.[##Scott_xwPaySheetDtlForN]"
That seems to work, though i do not know why the full tempdb.dbo.[## is required.
However, when i use this in the new report I am doing I get runtime errors.
i also tried this
CR2.Database.Tables.Item(1).Location = "##Scott_xwPaySheetDtlForN"
I did not get errors, but I was returned data i did not expect.
Before i delve into different ways to do this, i could use some help with a good pattern to use.
thanks

Hi Scott,
Are you using the RDC still? It's not clear but looks like it.
We had an API that could piggy back the HDBC handle in the RDC ( craxdrt.dll ) but that API is no longer available in .NET. Also, the RDC is not supported in .NET since .NET uses the framework and RDC is COM.
Work around is to copy the temp data into a data set and then set location to the data set. There is no way that I know of to get to the tempdb from .NET. Reason being is there is no CR API to set the owner of the table to the user, MS SQL Server locks the tempdb to that user has exclusinve rights on it.
Thank you
Don

Best Practice for Significant Amounts of Data

This is basically a best-practice/concept question and it spans both Xcelsius & Excel functions:
I am working on a dashboard for the US Military to report on some basic financial transactions that happen on bases around the globe. These transactions fall into four categories, so my aggregation is as follows:
Year,Month,Country,Base,Category (data is Transaction Count and Total Amount)
This is a rather high level of aggregation, and it takes about 20 million transactions and aggregates them into about 6000 rows of data for a two year period.
I would like to allow the users to select a Category and a country and see a chart which summarizes transactions for that country ( X-axis for Month, Y-axis Transaction Count or Amount ). I would like each series on this chart to represent a Base.
My problem is that 6000 rows still appears to be too many rows for an Xcelsius dashboard to handle. I have followed the Concatenated Key approach and used SUMIF to populate a matrix with the data for use in the Chart. This matrix would have Bases for row headings (only those within the selected country) and the Column Headings would be Month. The data would be COUNT. (I also need the same matrix with Dollar Amounts as the data).
In Excel this matrix works fine and seems to be very fast. The problem is with Xcelsius. I have imported the Spreadsheet, but have NOT even created the chart yet and Xcelsius is CHOKING (and crashing). I changed Max Rows to 7000 to accommodate the data. I placed a simple combo box and a grid on the Canvas u2013 BUT NO CHART yet u2013 and the dashboard takes forever to generate and is REALLY slow to react to a simple change in the Combo Box.
So, I guess this brings up a few questions:
1)     Am I doing something wrong and did I miss something that would prevent this problem?
2)     If this is standard Xcelsius behavior, what are the Best Practices to solve the problem?
a.     Do I have to create 50 different Data Ranges in order to improve performance (i.e. Each Country-Category would have a separate range)?
b.     Would it even work if it had that many data ranges in it?
c.     Do you aggregate it as a crosstab (Months as Column headings) and insert that crosstabbed data into Excel.
d.     Other ideas that Iu2019m missing?
FYI: These dashboards will be exported to PDF and distributed. They will not be connected to a server or data source.
Any thoughts or guidance would be appreciated.
Thanks,
David

Hi David,
I would leave your query
"Am I doing something wrong and did I miss something that would prevent this problem?"
to the experts/ gurus out here on this forum.
From my end, you can follow
TOP 10 EXCEL TIPS FOR SUCCESS
https://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/204c3259-edb2-2b10-4a84-a754c9e1aea8
Please follow the Xcelsius Best Practices at
https://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/a084a11c-6564-2b10-79ac-cc1eb3f017ac
In order to reduce the size of xlf and swf files follow
http://myxcelsius.com/2009/03/18/reduce-the-size-of-your-xlf-and-swf-files/
Hope this helps to certain extent.
Regards
Nikhil

Best-practice for Catalog Views ? :|

Hello community,
A best practice question:
The situtation: I have several product categories (110), several items in those categories (4000) and 300 end-users. I would like to know which is the best practice for segment the catalog. I mean, some users should only see categories 10,20 & 30. Other users only category 80, etc. The problem is how can I implement this ?
My first idea is:
1. Create 110 Procurement Catalogs (1 for every prod.category). Each catalog should contain only its product category.
2. Assign in my Org Model, in a user-level all the "catalogs" that the user should access.
Do you have any idea in order to improve this ?
Saludos desde Mexico,
Diego

Hi,
Your way of doing will work, but you'll get maintenance issues (to many catalogs, and catalog link to maintain for each user).
The other way is to built your views in CCM, and assign these views to the users, either on the roles (PFCG) or on the user (SU01). The problem is that with CCM 1.0 this is limitated, cause you'll have to assign one by one the items to each view (no dynamic or mass processes), it has been enhanced in CCM 2.0.
My advice:
-Challenge your customer about views, and try to limit the number of views, with for example strategic and non strategic
-With CCM 1.0 stick to the procurement catalogs, or implement BADIs to assign items to the views (I experienced it, it works, but is quite difficult), but with a limitated number of views
Good luck.
Vadim

Best practice on sqlite for games?

Hi Everyone, I'm new to building games/apps, so I apologize if this question is redundant...
I am developing a couple games for Android/iOS, and was initially using a regular (un-encrypted) sqlite database. I need to populate the database with a lot of info for the games, such as levels, store items, etc. Originally, I was creating the database with SQL Manager (Firefox) and then when I install a game on a device, it would copy that pre-populated database to the device. However, if someone was able to access that app's database, they could feasibly add unlimited coins to their account, unlock every level, etc.
So I have a few questions:
First, can someone access that data in an APK/IPA app once downloaded from the app store, or is the method I've been using above secure and good practice?
Second, is the best solution to go with an encrypted database? I know Adobe Air has the built-in support for that, and I have the perfect article on how to create it (Ten tips for building better Adobe AIR applications | Adobe Developer Connection) but I would like the expert community opinion on this.
Now, if the answer is to go with encrypted, that's great - but, in doing so, is it possible to still use the copy function at the beginning or do I need to include all of the script to create the database tables and then populate them with everything? That will be quite a bit of script to handle the initial setup, and if the user was to abandon the app halfway through that population, it might mess things up.
Any thoughts / best practice / recommendations are very appreciated. Thank you!

I'll just post my own reply to this.
What I ended up doing, was creating the script that self-creates the database and then populates the tables (as unencrypted... the encryption portion is commented out until store publishing). It's a tremendous amount of code, completely repetitive with the exception of the values I'm entering, but you can't do an insert loop or multi-line insert statement in AIR's SQLite so the best move is to create everything line by line.
This creates the database, and since it's not encrypted, it can be tested using Firefox's SQLite manager or some other database program. Once you're ready for deployment to the app stores, you simply modify the above set to use encryption instead of the unencrypted method used for testing.
So far this has worked best for me. If anyone needs some example code, let me know and I can post it.

Best Practice Table Creation for Multiple Customers, Weekly/Monthly Sales Data in Multiple Fields

We have an homegrown Access database originally designed in 2000 that now has an SQL back-end. The database has not yet been converted to a higher format such as Access 2007 since at least 2 users are still on Access 2003. It is fine if suggestions
will only work with Access 2007 or higher.
I'm trying to determine if our database is the best place to do this or if we should look at another solution. We have thousands of products each with a single identifier. There are customers who provide us regular sales reporting for what was
sold in a given time period -- weekly, monthly, quarterly, yearly time periods being most important. This reporting may or may not include all of our product identifiers. The reporting is typically based on calendar-defined timing although we have
some customers who have their own calendars which may not align to a calendar month or calendar year so recording the time period can be helpful.
Each customer's sales report can contain anything from 1,000-20,000 rows of products for each report. Each customer report is different and they typically have between 4-30 columns of data for each product; headers are consistently named. The
product identifiers included may vary by customer and even within each report for a customer; the data in the product identifier row changes each week. Headers include a wide variety of data such as overall on hand, overall on order, unsellable on hand,
returns, on hand information for each location or customer grouping, sell-through units information for each location or customer grouping for that given time period, sell-through dollars information for each location or customer grouping for that given time
period, sell-through units information for each location or customer grouping for a cumulative time period (same thing for dollars), warehouse on hands, warehouse on orders, the customer's unique categorization of our product in their system, the customer's
current status code for that product, and so on.
Currently all of this data is stored in a multitude of Excel spreadsheets (by customer, division and time period). Due to overall volume of information and number of Excel sheets, cross-referencing can take considerable time. Is it possible to
set-up tables for our largest customers so I can create queries and pivot tables to more quickly look at sales-related information by category, by specific product(s), by partner, by specific products or categories across partners, by specific products or
categories across specific weeks/months/years, etc. We do have a separate product table so only the product identifier or a junction table may be needed to pull in additional information from the product table with queries. We do need to maintain
the sales reporting information indefinitely.
I welcome any suggestions, best practice or resources (books, web, etc).
Many thanks!

Currently all of this data is stored in a multitude of Excel spreadsheets (by customer, division and time period). Due to overall volume of information and number of Excel sheets, cross-referencing can take considerable time. Is it possible to
set-up tables .....
I assume you want to migrate to SQL Server.
Your best course of action is to hire a professional database designer for a short period like a month.
Once you have the database, you need to hire a professional DBA to move your current data from Access & Excel into the new SQL Server database.
Finally you have to hire an SSRS professional to design reports for your company.
It is also beneficial if the above professionals train your staff while building the new RDBMS.
Certain senior SQL Server professionals may be able to do all 3 functions in one person: db design, database administration/ETL & business intelligence development (reports).
Kalman Toth Database & OLAP Architect
SELECT Video Tutorials 4 Hours
New Book / Kindle: Exam 70-461 Bootcamp: Querying Microsoft SQL Server 2012

HANA HA best practice

Similar Messages

Maybe you are looking for