Re: SharePlex

MessageHi!

Mladen, does DG really have additional fee when using EE? I tried to check from oraclestore, but got -> instead:

"The Oracle Store is temporarily unavailable due to required maintenance. We apologize for the inconvenience. For further assistance, please contact an Oracle Sales Representative."

They must be upgrading :)

But for shareplex & Financials issues, I think that Financials isn't probably supported running on "shareplexed" database. You ought to go with an Oracle solution, but I think logical standby mechanism is currently too buggy for a complex app (in sense of db feature usage) as Financials 11i (for example, materialized view refreshing has do be done manually IIRC, nested tables don't work, CTAS over dblink may fail etc..).

Your next option would be going with physical standby (opened as read only & , but that depends on your MTTR constraint and how real-time your reporting environment has to be. Physical standby will be much more safe in sense of replicating data to stdby, but even with physical standby you have to worry about some logging issues, as some concurrent manager jobs do nologging operations etc. Luckily in 9i you can use alter database/tablespace force logging command to force logging on any nologging commands. OTOH, this might mean a performance hit.

Note that when talking about Financials HA, you might also want to replicate/mirror concurrent manager output and log files in addition to database.

You should really check metalink notes 216212.1 and 216211.1 when thinking Apps and standby.

Tanel.

• Original Message ----- From: Mladen Gogala To: Multiple recipients of list ORACLE-L Sent: Saturday, August 09, 2003 2:04 AM Subject: RE: SharePlex

  Actually, logical standby database does have a hidden cost because you need Data Guard which is licensed   separately. The product that mimics SharePlex is called Oracle Streams and it is a redo log based replication   tool, sort of Logminer on steroids. By the way, logminer was published because of the Quest who reengineered   the format of redo logs and based recovery mechanism on reading the changes from the logs and applying   them to "replicated" database. Neither logminer, SharePlex nor Streams can handle DDL. One has to propagate   schema changes using Quest Schema Manager or the same thing from Embarcadero or, for masochists, OEM Change   Management Pack. I used every expletive in the book while I was testing OEM and I even invented a few of my own.   If you opt for any of those tools (and Data Streams is a pretty cool stuff, based on the demos, white papers from OTN,   marketing brochures and spam about the database enlargement), you will also need a schema manager tool.   Quest Schema Manager is a very good tool which I tested extensively.   I'f you decide to go cheap and use trigger/stored procedures based replication ("advanced replication"), you'll   need a gun, preferrably 44-magnum. That is known as "go ahead, make my data" option. Do you feel lucky?

  --
  Mladen Gogala
  Oracle DBA

    -----Original Message-----
    From: ml-errors_at_fatcity.com [mailto:ml-errors_at_fatcity.com] On Behalf Of Goulet, Dick     Sent: Friday, August 08, 2003 5:59 PM     To: Multiple recipients of list ORACLE-L     Subject: RE: SharePlex

    Nelson,

        SharePlex does the same basic thing that Oracle does for the logical standby, as a matter of fact if your running 9i why not use that instead of Quests's pricey tool? I don't believe there is any additional cost to using logical standby over the second server license that your going to have to pay anyway.

    Dick Goulet
    Senior Oracle DBA
    Oracle Certified 8i DBA

      -----Original Message-----
      From: Nelson, Allan [mailto:anelson_at_midf.com]
      Sent: Friday, August 08, 2003 5:14 PM
      To: Multiple recipients of list ORACLE-L
      Subject: SharePlex


      Hello, 

      Quest is trying to sell us a product named SharePlex.  It sounds very attractive, but then sales people are supposed to be good at that.  We are a mid sized company, about 2.2 billion per year, running Financials 11.5.7.  We are interested in this for HA and for reporting instance use.  



      <rant> 

      We use Cognos as our query tool and the owners of this product tells me that we can't tune the SQL it emits.  It makes pretty poor choices, which is not surprising for a gooey, sticky tool designed for end users.  It is sort of pretty and if you can drool you too can generate cross products.  Anyway , I'd like to get them off the production box.



      <rant/> 


      Does SharePlex allow you to stay close to the production instance in time?  Does the store and forward work well?  Do you love it?  Hate it?  Anything you'd like to say about this product I'd like to hear

      Thanks in advance 
        

        Allan L. Nelson
        Oracle DBA 
        M-I L.L.C.
        (832) 295-2238 office
        (832) 351-4180 fax
        anelson_at_midf.com <mailto:anelson_at_midf.com> 




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