Re: SAP and HANA
- From: Subodh Deshpande <deshpande.subodh@xxxxxxxxx>
- To: stmontgo@xxxxxxxxx
- Date: Fri, 18 May 2012 14:00:21 +0530
The way in which new technologies are emerging such kind of challenges may
arrive
If a revolutionary change occurs and if a new database can replace DB2
and/or Oracle, then definitely it will be a matter of concern.
Mostly HANNA will require more technical resources to manage the
architecture, when every one is cutting down the cost on their present
assets.
primafacie in memory database in this new sap and oracle times ten database
are not different, and now please tell me the difference between times ten
and huge sga with almost all objects cached in memory ! I think such
databases are suitable for dataware house where as SAP is known for process
means the databases will be more General purpose or OLTP..how it will
benefit..i think somewhere it is written new sap db is going to use rule
based optimiser
if suppose tomorrow a new features emerges in a database technology and in
SQL engine, like when a query is fired it will decide where its a pure
select query or also has dmls, ddls in its other query portion, it will
decide what should be its plan, depending upon this the query execution
will change..the nature of usage of undo, buffer cache will change...means
memory gain..today we just mark dirty buffers..if dirty buffers are flagged
depending upon the type of query the execution will change..may there will
be multiple lru lists
by flagging I mean, select and insert requires index position, where as
update and delete may change the index position..the query when fired
should decide what is the nature of the query and should go ahead..
these are just thoughts..may be wrong..I am just a database user working as
dba...
thanks and take care..subodh
On 17 May 2012 09:07, Art Vandelay <stmontgo@xxxxxxxxx> wrote:
> List,
> We're seeing some discussions in our organization around the SAP
> Database offering Hana.
> I'm interested to hear your thoughts on this
>
> Do you think this product will gain any traction?
>
> Do you believe Gartner when they state "A Double Wake Up Call for
> SAP's Competitors" - Should Larry be worried?
> http://www.gartner.com/technology/reprints.do?id=1-17OKEN0&ct=111014&st=sb
>
> Is anyone running Hana and can they provide some feedback?
>
> I appreciate your thoughts on the matter.
>
> Steve
> --
> //www.freelists.org/webpage/oracle-l
>
>
>
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