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Focal Point    Focal Point Forums  Hop To Forum Categories  WebFOCUS/FOCUS Forum on Focal Point     [Closed]Performance in meta data

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[Closed]Performance in meta data
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Tim P.
Platinum Member
posted
Hey guys:
I was putting together some meta data in webfocus. As I am not sure how WF manages the meta data, is there a performance hit if you join a table in one database (oracle) to another table in another database (MSSQL)?

I know you can join any table from any type of database in WF, assuming you have the correct adapter but when you do that there is a performance hit. I wasn't sure if this was the same in the meta data.

Thanks.

This message has been edited. Last edited by: Tim P.,


WebFOCUS App Studio 8.2.02
Windows 7, All Outputs
 
Posts: 141 | Location: Mclean, VA | Registered: December 04, 2012Report This Post
Francis Mariani
Expert
posted Hide Post
The "meta-data join" will be be done only when a TABLE FILE is executed.

As far as I know, the join will be done internally, meaning the data from Oracle will be retrieved and stored in a temporary file, then the data from MS SQL Server will be retrieved and stored in a temporary file, then a WebFOCUS join will be performed. This is definitely not optimal performance but I can't think of another way to do it.


Francis


Give me code, or give me retirement. In FOCUS since 1991

Production: WF 7.7.05M, Dev Studio, BID, MRE, WebSphere, DB2 / Test: WF 8.1.05M, App Studio, BI Portal, Report Caster, jQuery, HighCharts, Apache Tomcat, MS SQL Server
 
Posts: 10577 | Location: Toronto, Ontario, Canada | Registered: April 27, 2005Report This Post
Doug
Expert
posted Hide Post
With that (Francis Mariani's post of 16:09) being true, consider extracting the required data (based on WHERE statements) from each file and HOLDing the results then doing the JOIN. This way the entire table will not "be retrieved and stored in a temporary file".
 
Posts: 3132 | Location: Tennessee, Nashville area | Registered: February 23, 2005Report This Post
Waz
Expert
posted Hide Post
Ditto with Doug.

If they are large tables its probably a good thing to so.


Waz...

Prod:WebFOCUS 7.6.10/8.1.04Upgrade:WebFOCUS 8.2.07OS:LinuxOutputs:HTML, PDF, Excel, PPT
In Focus since 1984
Pity the lost knowledge of an old programmer!

 
Posts: 6347 | Location: 33°49'23.0"S, 151°11'41.0"E | Registered: October 31, 2006Report This Post
Tim P.
Platinum Member
posted Hide Post
I figured this was probably the case. I have another way of doing it without doing it in the meta data but i figured i'd give it a try and see how it worked.

Thanks for the help!


WebFOCUS App Studio 8.2.02
Windows 7, All Outputs
 
Posts: 141 | Location: Mclean, VA | Registered: December 04, 2012Report This Post
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