Re: Crossing over from SQL Server

On Jun 10, 8:21 pm, DA Morgan <damor..._at_psoug.org> wrote:
> Tracy McKibben wrote:
> > About a year ago, the company that I work for purchased another
> > company.  We're a large SQL Server shop, but this new company has a
> > mix of SQL Server and Oracle.  As part of the DBA team, I'm required
> > to start learning Oracle, in order to provide production support
> > (admin duties, performance tuning, etc..).
>
> > Aside from classroom training (doesn't work well for me, I get bored),
> > what suggestions are there for getting up to speed?  I'm looking for a
> > "in SQL, you do it like this, in Oracle, you do it this way" stuff -
> > books, CBT's, whatever.  I'm planning to purchase the "Admin Workshop
> > I", "Admin Workshop II", and "Performance Tuning" CBT's from Oracle.
> > What else can I look for?
>
> I teach Oracle cross-over courses for SQL Server, Sybase, Informix,
> and DB2 as part of my curriculum at the University of Washington and
> my finding is that those SQL Server pros that do not approach Oracle
> with an open mind to learning new things do the worst.
>
> Lets start with verbiage. The following words, in Oracle, have meanings
> partially or totally unrelated to their usage in SQL Server:
> DATABASE
> INSTANCE
> CLUSTER
> LOG FILE
>
> Oracle has object types that are critically important that do not
> exist in SQL Server including:
> SEQUENCES
> BEFORE TRIGGERS
> (most) EVENT TRIGGERS
> PACKAGES
> OPERATORS
> BITMAP INDEXES
> BITMAP JOIN INDEXES
> FUNCTION BASED INDEXES
> REVERSE KEY INDEXES
> INVISIBLE INDEXES
> EXTERNAL TABLES
> GLOBAL TEMPORARY TABLES
> (most) PARTITIONING & (all) COMPOSITE PARTITIONING
>
> And the underlying concepts and architecture of SQL Server is based
> on the INGRES project at UC Berkeley and bears no relationship to
> the concepts brought to Oracle. SQL Server 2005 tried to imitate
> one (MVCC) but otherwise they are essentially different beasts.
>
> I have put together a page that hopefully makes more of this clear:http://www.psoug.org/reference/sqlserver.html
>
> And the other big thing ... in Oracle you MUST read the docs.
> Start here:http://www.oracle.com/pls/db111/homepage
> and find the link to "Concepts."
> --
> Daniel A. Morgan
> Oracle Ace Director & Instructor
> University of Washington
> damor..._at_x.washington.edu (replace x with u to respond)
> Puget Sound Oracle Users Groupwww.psoug.org

I though SQL Server was based on Sybase since the first version of SQL Server was a port of Sybase to the MS DOS platform. Both database managers still shared numerous stored procedure names for performing the same function and the T-SQL lanaguage.

• Mark D Powell --