RE: oracle v SS

From: Noveljic Nenad <nenad.noveljic_at_vontobel.com>
Date: Thu, 7 Nov 2019 21:41:02 +0000
Message-ID: <21745_1573162872_5DC48F78_21745_5455_1_2997ab1cdb514d5694e003e60f151b97_at_vontobel.com>

Hi Orlando,

Both products are high-end - you can't go wrong with either of them. When making the decision I'd consider not only the cost, but also what know-how you already have in-house, not only about databases, but OS (including virtualization) as well. In fact, that might be the most important criteria.

Here are some technical points, which might relevant:

• Readers-blocking-writers mentioned by Mladen is just an awkward default that can be changed.
• Another suspicious default in SQL Server is "clustered index" (as opposed to heap table) as a data storage structure, which is similar to index organized table (IOT) in Oracle, just the IOTs performs much better because of the smarter implementation.
• PL/SQL is much more sophisticated than TSQL, which might be relevant if you plan to store your application logic in the database. Actually, TSQL doesn't scale well when the same code is concurrently executed by multiple sessions.
• There are also some other scalability issues related to built-in SQL Server OS Scheduler.
• SQL Server integration with Active Directory is seamless. In contrast, Oracle integration is pain in the neck. Consequently, the user administration is much easier in SQL Server, which might be relevant if you let lot of people directly connect to the database.
• Oracle/Linux troubleshooting/performance tuning features are superior! SQL Server is slowly catching up, but it's still way beyond Oracle.
• I discovered a couple of cases where SQL Server optimizer works better. However, it's nothing that couldn't be achieved by rewriting the queries.
• SQL Server comes with BI components (Reporting & Analysis Server, SSIS).

I elaborated on many points above here: https://nenadnoveljic.com/blog/category/comparison-oracle-sql-server/

Good luck!

Nenad

Twitter handle: _at_NenadNoveljic

-----Original Message-----
From: oracle-l-bounce_at_freelists.org <oracle-l-bounce_at_freelists.org> On Behalf Of Mladen Gogala Sent: Donnerstag, 7. November 2019 21:43 To: oracle-l_at_freelists.org
Subject: Re: oracle v SS

On 11/7/19 3:13 PM, Orlando L wrote:

> Hi all
>
> Trying to decide between oracle and sql server for a query/warehousing
> type database. Can anyone share their input or point to a paper for
> the current versions. Thanks
>
> Orlando.

Hi Orlando!

SQL Server enterprise edition comes with what Oracle calls "In-Memory option" and partitioning, no further licensing required. SQL Server doesn't have multi-versioning which makes things simpler for mostly query database. On the flip side, readers block writers and vice versa, which means that loading usually means downtime. SS has something called "always on availability groups", which allows you to maintain shared nothing "cluster" with several identical database copies, which can be queried in parallel. SQL Server supports bitmap indexes and star (snowflake) schema queries. SQL Server EE is significantly cheaper than Oracle. I would advise going with SQL Server.

Regards

--
Mladen Gogala
Database Consultant
Tel: (347) 321-1217

--
http://www.freelists.org/webpage/oracle-l

---

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