One big replication or some small replications

Hello,
I would ask you about advice. In our system, which runs on MSSQL 2008, we replicate some tables. The system has only 4GB RAM. 2GB for DB and 2GB for system.
1st table has about 7 million entries.
2nd table has about 4 million entries.
3rd table has about 4 million entries.
4th table has about 1 million entries.
5th table has about 2 million entries.
Other tables have only few entries.
Now we have separate replication for each table.
What is better? If I have 1 big replication for all tables or small replications?
Thank you David

As Tom mentioned there is nothing do with Size of table but definitely transaction rates(Insert/Update/delete) on the table will have impact on performance which may create latency in the synchronization. You need to extend the default agent setting.
I agree, initial snapshot is big concern, but you can do with a backup and restore method to sync the data between publisher and subscriber.
I would recommend you to upgrade Hardware configuration for better performance.
It is better to handle with simple design structure by having I Publisher.
-Prashanth

Similar Messages

  • SELECT query performance : One big table Vs many small tables

    Hello,
    We are using BDB 11g with SQLITE support. I have a query about 'select' query performance when we have one huge table vs. multiple small tables.
    Basically in our application, we need to run select query multiple times and today we have one huge table. Do you guys think breaking them into
    multiple small tables will help ?
    For test purposes we tried creating multiple tables but performance of 'select' query was more or less same. Would that be because all tables will map to only one database in backed with key/value pair and when we run lookup (select query) on small table or big table it wont make difference ?
    Thanks.

    Hello,
    There is some information on this topic in the FAQ at:
    http://www.oracle.com/technology/products/berkeley-db/faq/db_faq.html#9-63
    If this does not address your question, please just let me know.
    Thanks,
    Sandra

  • One big library or multiple small ones?

    I have around 25000 images in my A3 library. I'd say about 50% of them are raw. They are referenced on an external 1TB MyBook studio connected by FW800. Aperture is dying. If I so much as scroll one line of photos it just hangs for ages and is completely unusable. I know there is a huge thread on this, but that mainly seems to be people upgrading and having painfully slow switch overs, whereas I am there and now crawling.
    Would it be better to split them into multiple libraries? It would be about 5 and they would range from having 1000 images to 10000. I know its easy to do but I don't want to do it if its not really going to do anything.
    The other thing I saw when googling was that FW drives can actually slow down Aperture. I have the MyBook connected by USB and it seems to be a good bit snappier. However the MyBook isn't just for photos and the whole reason I have it is for FW800 speeds, so leaving it as USB is a non runner. I may be able to put the photos on a different USB drive, but if I put them on the iMac's internal drive, would I see the same improvement? That is a mammoth task of moving 142GB of photos, which I will do if I have to, but only if it is definitely going to work, as it requires moving all personal movies music and other images that aren't photographs totaling 50GB off of the internal onto the MyBook, so thats almost 200GB of data to be moved, so its got to 100% work if I'm going to do that!
    Thanks for any help.
    Regards

    Nope, I used the trial but didn't like the way it handle versions. I just couldn't get my head around it. So I went with Lightroom (I know, I know!) and found that fine in terms of speed, nothing as slow as Aperture is now, but nothing incredibly fast, average I'd say.
    I have 4GB in my iMac and to upgrade that is €200 for one 4GB stick to its maximum of 6GB. A lot of money for a it more ram. I have the 256 Graphics in the iMac, so thats pretty much the bottom of the line, which can't be upgraded... If finances allowed I'd get a Mac Pro, but they just don't, and won't for a very long time!
    Regards

  • Capturing One Big Video File

    I can't seem to find the setting to let me capture one video file in PE7. It seems to create several and all I want is one. Which setting is it?
    Thanks,
    Brian

    I'm with Hunt. I thought if you turned Scene Detection off, it would produce one big file. But I guess I'm assuming you're capturing DV-AVI from tape. If PRE is giving you fits, WinDV is a very nice (and free) capture utility that would produce one, big file for you.
    I haven't yet worked (much) with HDD / flash card source assets, but I believe in that case the source would be in different files, no?
    Just out of curiosity, why do you want one, big file versus several  smaller?

  • Many small purchases, or one big one?

    Hello, I'm actually really new to the credit world and just got two cards, a Chase Freedom and a Discover IT for Students. I want to get started building my credit and increasing my credit limit. I realize it's a slow process, (and maybe getting two cards at once wasn't the best idea) but I want to make sure I don't needlessly slow down this process.
    My main question is, are many small purchases in a month better than just one big one, or does it even matter?For Example…
    Chase Freedom CL: $1200
    Discover IT CL: $1000I was hoping to use these cards to make payments on my tuition. If every month I only spend a $200 payment from my Discover card, is that better or worse than just buying 20 items at $10 apiece?Again though, the ultimate goal is to increase my CL and CS.

    Great cards to start on. I wish I had gotten two in college. I just graduated and got my second. Like others have said, the amount of charges doesn't matter as long as you keep your overall and individual util at or under 30% which you would be doing at the charges you're describing. if need be, don't shy away from making multiple payments in a month to keep your util low while using the cards as much as you like (responsibly, and within your need/ability of course) while earning the rewards. Enjoy building. You're definitely off to a good start!

  • How can I divide one big long track into several smaller ones?

    I have many mp3"s I imported or downloaded in my Library of lectures, sermons and speeches.
    How can I divide one big long track into several smaller ones?
    Any input would be great.

    lakergrl wrote:
    How do I split one very long track into several tracks (audio journal split into each day)
    http://www.bulletsandbones.com/GB/GBFAQ.html#exportsections
    (Let the page FULLY load. The link to your answer is at the top of your screen)

  • One way replication from MS sql server to Oracle 10g

    Hi,
    We are using Sql server 2005 windows 2003 32 bit and Oracle 10g 10.2.0.3 on linux 64 bit
    Is it possible to replcate table data on real time from sql server (2005 32 bit or sql server 2000 32 bit)to oracle 10g running on linux 64 bit?
    If yes then what are the steps.
    It will be one way replication from sql server to oracle.
    Which option is best sql server dts or Oracle Stream replication to replicate table data?
    Regards,

    If you want to push data from SqlServer, then ODBC, Linked tables, DTS etc.
    If you want to pull data from Oracle, then Heterogenous Services / Gateway.

  • One-Way replication

    Hi,
    Is there a way to perform a one-way replication: we run 9i on a primary server and we want to duplicate the database (running on that server) to a secondary server In case of a failure of the primary server, the second one would be operational.
    We are thinking about using replication to copy data from the primary database to the secondary server. The problem with this solution is that replication is a 2 way process: any changes made on the secondary server is duplicated to the primary one.
    Deletion is a huge problem in our case: deleting a table from the standby server, would delete it from the primary one. This is not acceptable in our case because we do not want to have changes made on the secondery server copied to the first one!
    Any solution to that problem?
    Thanks in advance.

    Using read only materialized view

  • I shared my project and saved it as .mov but when i reopen the fcp the project is one big clip, and now i cant re-edit the video, cant see all the clips, just one big clip,,,pls help, i need to make some changes to the project..thanx

    I shared my project and saved it as .mov but when i reopen the fcp the project is one big clip, and now i cant re-edit the video, cant see all the clips, text's, effects, etc..... just one big clip,,,pls help, i need to make some changes to the project..thanx

    Hi Stephen, thanx...
    Yes, we are talking about FCP X...this is the thing:
    I worked on a project a few days ago and went to share - export movie.
    Today, i opened the FCP again, to make some changes, and when i enter to the project, it shows me as one big clip.....i dont see it says compound clip....and i tried anyways pressing break appart clips...but nothing....could it be that i made it compound before exporting it..? if so how can i recover the un-compound version >?
    I tried to import the saved .mov file, but it opens the same....as one long clip...
    Pls help...thanx.

  • More small datafiles or one big datafile for tablespace

    Hello,
    I would like to create a new tablespace (about 4 GB). Could someone if it's better to create one big datafile or create 4 datafiles with 1 GB each?
    Thank you.

    It depends. Most of the time, it's going to come down to personal preference.
    If you have multiple data files, will you be able to spread them over multiple physical devices? Or do you have a disk subsystem that virtualizes many physical devices and spreads the data files across physical drives (i.e. a SAN)?
    How big is the database going to get? You wouldn't want to have a 1 TB database with 1000 1 GB files, that would be a monster to manage. You probably wouldn't want a 250 GB database with a single data file either, because it would take forever to recover the data file from tape if there was a single block corruption.
    Is there a data files size that fits comfortably in whatever size mount points you have? If you get 10 GB chunks of SAN at a time, for example, you would probably want data files that were an integer factor of that (i.e. 1, 2, or 5 GB) so that you can add similarly sized data files without wasting space and so that you can move files to a new mountpoint without worrying about whether they'll all fit.
    Does your OS support files of an appropriate size? I know Windows had problems a while ago with files > 2 GB (at least when files extended beyond 2 GB).
    In the end though, this is one of those things that probably doesn't matter too much within reason.
    Justin
    Distributed Database Consulting, Inc.
    http://www.ddbcinc.com/askDDBC

  • Mosaic - A bunch of different small pictures make one big one

    Is there a good software title or plug in for photoshop that will allow me to make a mosaic picture, (the ones where a bunch of smaller pictures fit together to make one large one)?
    I googled it but all I could find was online services that do it online for you over the internet. I would like the actual softwre.
    Any help would be appreciated.
    Paul W.

    I tried it with standard .jpgs from two different sources. My camera and photos from a professional photographers photo shoot so I do not think it is that. The photos I used worked fine with the Mac OSX screensaver mosaic...
    Also, When I selected a small amount of photos it did not complete the image. It looked like nothing but random small pics with a ton of white space around them. When I selected a lot it crashed. Also, it always stops at about 78% complete. I was weary as to how well it would work being free and all.
    That being said, if there is one that works really well (as in as good as the Mac OSX mosaic screensaver) I would buy it. I just cant find it.
    Thanks for the suggestion though
    Paul W.

  • One Big Ol' Report

    Ok Here Goes
    Here's my scenario - I have built several separate reports, and all have conditions on them so they only show based on a variable. They are matrix reports:
    EX:
    --Report 1 where PRODUCT CATEGORY = 'SHIRTS'
    (SHIRTS)
    PRODUCT          ATT1   ATT2   ATT3    ATT4      
    Cotton T-Shirt   Blue   Large  Cotton  Pre-Shrunk
    --Report 2 where PRODUCT CATEGORY = 'SHOES'
    (SHOES)
    PRODUCT     PRODUCT SUBCAT     ATT1      ATT2     ATT3      
    Boots       INDUSTRIAL         12 Hole    Y        NI have a list (shown as tabs) across the top of the page and the user can view any of the reports for that category. The list just sets the category variable. I did this because each report has a different set of descriptive criteria to show. Shoes show the number of eyelets and whether they are designated as safety shoes, but that wouldn't make sense in the context of shirts.
    My question is not about how to do the matrix reports, but rather how to get all of these report sections into one page and allow the entire set of pages to be downloaded to a PDF. Currently each small report can be downloaded to a PDF, but not the entire thing. Problem is I really can't do a union in the query because the number of columns I need are different, and the titles are dynamic.
    So does anyone have an idea (short of using Oracle Reports) to get multiple separate report regions to print to one big PDF?
    - 405 -

    Why do you hide yourself behind a number? That's actually not nice and fair. And then,
    you expect the others to help you with such a big thing.
    I don't know much about .pdf, allthough I think it would work there as well - with some
    HTML => XHTML => XSLT Stylesheet => XLS-FO to => PDF... conversions using FOP.
    However, to get this into an excel file would be a piece of cake.
    Denes Kubicek

  • Not sure why but when i open a new tab my top sites are no longer showing not even a toggle switch it's just one big blank white page? how can i correct this ?

    i did have my most visited sites in the pin ups yet for some reason or other not sure why but not when i open a new tab all there is, is one big blank white page. Not a toggle switch not even blank pin up thumb nails. Any help would be greatly appreciated. thank you

    See this old question:
    *[https://support.mozilla.org/en-US/questions/982051#answer-517878 /questions/982051#answer-517878]

  • Many little datafiles or one big datafile?

    Hi all
    I have a database which grows every day. I have 10 datafiles with name users01.db , users02.dbf and etc.
    And all these datafiles have 1.5Gb size. Each time every datafile reachs it's 1.5Gb size, I add new datafile. Is it correct strategy? Or I must add only extents to last datafile and allow it to grow?
    Thanks...

    Hi,
    In my point of view, it is a good approach if "table striping" is used, where data is spread across more than one device. Otherwise, if you have just one disk, then I don't see advantages or disadvantages. In addition, take a look at [url http://forums.oracle.com/forums/thread.jspa?messageID=1041074&#1041074]more small datafiles or one big datafile for tablespace thread.
    Cheers
    Legatti

  • Why no more clips and just one big .mov file?

    I had been working in iMovie and iDVD 4 for some time up until present when I upgraded to iLife 6. One of the things I like about ver. 4 was that the whole movie was saved as a file but there were also the individual clips saved as well. I could use these clips when creating my iDVD project. Now I see that those clips are gone and there's just one big .mov file to drop into my iDVD themes. Why did they do this??? Is there some benefit to this that I'm not understanding? Maybe I don't have something set correctly in the prefs.? Is there anyway around this so that I have control over what part of a movie gets dropped into my iDVD themes?
    -Daryl

    Thank you so much, Matt. That did the trick. I would've never thought of that. I was beginning to figure that the clips just had to be somewhere else that wasn't obvious to me. I couldn't believe that they would do away with that. Thanks again!
    -Daryl

Maybe you are looking for